Jun 04, 2010 · All truck TBI motors from 1987-1995 came with the maligned TBI truck head. High swirl intake and combustion chamber, good for high torque low HP low RPM applications (4x4 and towing). Great for low compression and good for gas mileage, very bad for High HP applications. You can easily make 250+ hp 350+ft torque with a modified 350 TBI truck ...

Idle dropped below spec idle then returned to extreme idle speed. Connected vac hose and disconnected MAP electrical, got same results, dropped to spec idle and then returned to high idle. Forgot to mention that engine cranks slow like ignition timing is too far advanced but does the same with the ESC spout connected/disconnected.Nov 11, 2010 · 1994 3500 7.4 TBI: Going nuts trying to find this wire. The pcm is located next to the master cyl unlike my K1500 which is near the glove box. The problem I'm having is high idle. Searched for vacuum leaks, no codes. It is running @ open loop upon start up and will go into closed loop. Noticed the timing @ idle according to the scanner is 16 ...

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The 265 cu in (4.3 L) "Turbo-Fire" V8 was the second Chevrolet small-block; the first Chevrolet V8 was produced from 1917 to 1918. Designed by Ed Cole's group at Chevrolet to provide a more powerful engine for the 1955 Corvette than the model's original " Blue Flame" in-line six, the 162 hp (121 kW) 2-barrel debut version went from drawings to production in just 15 weeks. Nov 06, 2012 · I have even ran a TBI unit from a 454 (7.4) on a 350 (5.7) by changing the injectors and the use of an adapter that came on 1989/1990 1 ton trucks and using an Edelbrock Performer intake (modified to work with the 15 degree center bolt TBI heads) even setup the EGR and all (fooled it with an oraficed vac can)...
Fig. 1 For access to the idle stop screw, pierce the cap with an awl and carefully pry the cap from the side of the throttle body; Access our Chevrolet Full Size Cars 1979-1989Throttle Body Injection (TBI) Repair GuideMinimum Idle Speed Adjustment by creating an account or signing into your AutoZone Rewards account. Problems With A 1987 Chevrolet L05 350 TBI. I own a 1987 Chevrolet R10 pickup with a 5.7 TBI, the L05 I believe. It has the automatic 3-speed with overdrive. Despite 190,000 miles on the clock she has run perfectly until now, although quite heavy on gas. ... Fast Idle - fast in neutral and drive gears, ridiculously fast in park. Also idle ...
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Problems With A 1987 Chevrolet L05 350 TBI. I own a 1987 Chevrolet R10 pickup with a 5.7 TBI, the L05 I believe. ... Fast Idle – fast in neutral and drive gears ... The Chevy 350 firing order is 1-8-4-3-6-5-7-2. That means next to the number one spark plug wire will be the number 8 spark plug wire, the number 4 and so on in a clockwise rotation. Conclusion. The firing order is the same for the Chevy 350 as well as many other small block and big block Chevrolet V8 engines. Thankfully Chevy engineers has ...
1987 Chevyc1500 with 350 TBI. Truck idles high. If I unplug the IAC the idle is fine. Symptom is the truck starts out idleing at about 700 rpm in gear and then slowly increases to about 2000 rpm. If I unplug the IAC then the it drops right back down. Threw an IAC at it. Have checked for vacuum leaks.Had this problem for a few years now and finally I want to get to the bottom of it. My truck is an 87 R10 with the 305 TBI. When the air conditioning is turned on, the engine will stumble and stall at idle while in gear. Also stumbles and occasionally will stall when first started in the morning. Idles great and runs great when warmed up.
1987 1988 1989 chevy gmc tbi throttle body truck / suburban w/7.4l / 454c.i. V8. If you are not sure about your application please don't hesitate to contact our sales/tech dept by emailing us and we will gladly help you. Best Throttle body cleaner https://amzn.to/2Yy2Vacnew IAC valve https://amzn.to/2YXCFkRTake out the iac valve, clean the nasty gunk off the part that moves i...
Great crate engine noticeable Idle, but still good vacuum for you power accessories. ... 1987-1995 Chevrolet TBI High Performance Engine 290HP ... Tbi for a 350 Chevy ... My chevy 1987 chevy Scottsdale with a 350 tbi sometime runs smooth then sometimes runs like its running with half the power or less like it has bad gas or something. I have replaced the fuel filter, oxygen sensor, air filter, it doesn't matter which tank I run it on, I've used fuel dryer (Heat) changed pvc valve, could be a injector going bad?
Re: 95 350 high idle check engine light 04-04-05 03:45 PM - Post# 657823 In response to kenwood After a week or two of changing various things, including the idle control motor, it came down to a faulty throttle body / base plate gasket. A buddy of mine who is a mechanic sprayed carb cleaner along side of where the throttle body meets the intake.350 tbi idling high? ... it will let the engine idle high. ... A forum community dedicated to GMC and Chevy full size owners and enthusiasts. Come join the discussion ...
High Amp New Bosch 2 30 amp Alternator for 1999-U P Chevrolet Venture, Oldsmobile Silhouette & Pontiac Montana, 2000-U P Chevrolet Impala Applications, Most 2.4,3.1,3.4,3.8 Engines 8. 200-240 Amp Bosch AlternatorUpgrade for Sprinter Van Applications 9. New! 2003-U P Dodge Ram Pickups 5.7L HEMI & 5.9L Cummins Diesel new o.e.m 230 amp BOLT ON ... Too high hydrocarbon at idle 1987 chev 350, throttle body injection. Passes at cruise, 220 idle limit HC / 733 HC after new plugs, wires, cap &rotor plus a bottle of "guaranteed to pass" in fuel tank.
Okay when i got this truck a week ago it was running kind of weird it wouldnt idle right and would not have the power you should get out of a 350 5.7liter so i put new spark plugs in new wires new distributor button and a new distributor cap i just took one wire off the old on as i was putting it on the same way on the new one so i didnt check the firing order! Jan 31, 2012 · I have a 1987 chevy sliverado 350 5.7 liter, tbi, automatic, the problem is when you start up the truck and let it idle for a minute the engine starts reving up and down and tends to stall. I have cha … read more
Designed for 1987-95 305/350 c.i.d. (5.0/5.7L) Chevy throttle body injected (T.B.I.) engines. Number 3704 is a stock replacement/street legal part for 305/350 V8s with factory T.B.I.; 1987-95. General Information 350 tbi idling high? ... it will let the engine idle high. ... A forum community dedicated to GMC and Chevy full size owners and enthusiasts. Come join the discussion ...
The largest GM TBI unit was provided on the BBC 7.4l trucks. This is a 2-bbl unit with 2" bores. Even though in stock form TBI setups were never used on a performance engine, it doesn't mean that they can't be used on a high performance engine. All is Not Lost: There are several ways to increase the flow capacity of the TBI unit and the injectors. Problems With A 1987 Chevrolet L05 350 TBI. I own a 1987 Chevrolet R10 pickup with a 5.7 TBI, the L05 I believe. ... Fast Idle – fast in neutral and drive gears ...
Re: extream high idle problem on 1990 chevy 1500, 4.3 v6 TBI Thank you so much. I whiped that out in less than an hour, was obivious as soo as I got the TBI loose that the thing has been sucking in air for a long time. With the new $5 gasket it purrs like a kitten. I am amazed how nice it idles now.If you are looking for a spark plug wires to service your 350 engine, then check this ACDelco set. It is a professional set that is made of high-strength glass fiber and high-temperature silicone insulators. This is a professional set of wires.
1987 Chevy R10 pickup 4. 3 TBI manual. The truck seems to run OK at higher speeds. Doesn't idle well. Starting out in first the truck sometimes bucks. No check engine light is lit. No codes set. Seems like it has no power until high RPM. It won't idle. It just dies every time you do anything but run down the road. Otherwise everything is fine. Starts like a great. I am thinking of 'scoping the idle speed motor wires, but I don't know what to expect. It is a 1987 Chev Silverado with the 5.7 liter TBI engine, HEI ignition with detached coil.
The engine should be capable of running on the street, with decent idle characteristics and low-end torque. For longevity and practicality, the engine ought to develop peak power at around 5500-6000 rpm. finally, the package needs to be reasonably priced because the high-buckers would just as soon spring for the larger displacement small-blocks. Idle dropped below spec idle then returned to extreme idle speed. Connected vac hose and disconnected MAP electrical, got same results, dropped to spec idle and then returned to high idle. Forgot to mention that engine cranks slow like ignition timing is too far advanced but does the same with the ESC spout connected/disconnected.
Had this problem for a few years now and finally I want to get to the bottom of it. My truck is an 87 R10 with the 305 TBI. When the air conditioning is turned on, the engine will stumble and stall at idle while in gear. Also stumbles and occasionally will stall when first started in the morning. Idles great and runs great when warmed up. Typically 2 problems. Idle surge or idle hunting and high idle. Lets start with the high idle. this is most often caused by a vacuum leak. TBI being a MAP sensor based system will see the leak just like opening the throttle blades and will feed the leak and then you have a high idle.
Loading... I have an 87 GMC 305 with TBI and a 87 Chevy 350 with TBI about 8 months ago my idle speed went up so high that it darn near knocked out the U-Joints when shifting in an out of gear as I was doing a tune up and inspection of related components, I found that my o2 sensor was broken off just above where you put the wrench to remove it.
Chevy SBC 350 5.7L HP Stage 3 465/465 Camshaft Install Kit 1987-1995 TBI Engine 5 out of 5 stars 1 $219.78 $ 219 . 78 Chevy SBC 350 5.7L HP RV Stage 2 420/433 Lift Cam Camshaft & Lifters Kit Timing $190.55 $ 190 . 55 Best Throttle body cleaner https://amzn.to/2Yy2Vacnew IAC valve https://amzn.to/2YXCFkRTake out the iac valve, clean the nasty gunk off the part that moves i...
May 26, 2014 · Wondering if anybody can help me out. I have a bone stock 350 out of a 74 nova. 85000 miles on the engine, presumably never rebuilt. At 800 rpm, my vacuum fluctuates fairly steadily between 14 and 16. I have played around with the idle speed and 16 is the most I can get. When I give it the throttle quickly it jumps from 1 to 20. Class II Version - Chevrolet 350 Engine 300 hp @ 5000 rpm • 365 ft. lbs. Torque @ 4000 rpm 1987–1995 TBI Chevrolet and GMC C/K Series trucks Part Specifications. Description: The Class II Performance engine is for the serious performance minded person who needs power for a specific application.
1987 Chevrolet S-10 Pickup1987 chevy s10 2.5l tbi will not start. changed bad fuel pump works well now strong pressure to throttle body. change fuel pressure switch, oil pressure switch, o2 sensor, map sensor, distrib cap, rotor, electric part on dustrib, check for 12v to fuel injector good, check ground good, fuses good, ecm swapped changed fuel injector engine runs now but runs high idle and ... The Chevy 350 firing order is 1-8-4-3-6-5-7-2. That means next to the number one spark plug wire will be the number 8 spark plug wire, the number 4 and so on in a clockwise rotation. Conclusion. The firing order is the same for the Chevy 350 as well as many other small block and big block Chevrolet V8 engines. Thankfully Chevy engineers has ...
Jan 25, 2012 · I just bought a 1994 gmc suburban from a guy who put a gm performance crate motor in it with a bigger cam. I am getting around 8 miles to the gallon and my fuel trim is around 90 at idle. my map sensor is reading high around 2.1volts at idle. Do you think the adjustable map sensor would help with this? I am also having idle surging issues as well. 1987 Chevrolet S-10 Pickup1987 chevy s10 2.5l tbi will not start. changed bad fuel pump works well now strong pressure to throttle body. change fuel pressure switch, oil pressure switch, o2 sensor, map sensor, distrib cap, rotor, electric part on dustrib, check for 12v to fuel injector good, check ground good, fuses good, ecm swapped changed fuel injector engine runs now but runs high idle and ...
Chevy 350 tbi to carb Great crate engine noticeable Idle, but still good vacuum for you power accessories. ... 1987-1995 Chevrolet TBI High Performance Engine 290HP ... Tbi for a 350 Chevy ...
Idle is up and down. Has new: fuel pump/fuel filter, TPS, O2 sensor, knock sensor, coolant sender and sending unit. I'm an intermediate backyard mechanic, and this is the first TBI motor I've worked on, so any help would be much appreciated.2. Throttle Body Injection = TBI The 4.3, 5.0 and 5.7 TBI's are all the same CFM with 1 11/16th bores. The injectors are different sizes. The 454 is larger with close to 2 inch bores. It is recommended a TBI from about the same size engine to be used in your conversion or larger for high performance built engines. 3. TBI Wiring Harness.
Class II Version - Chevrolet 350 Engine 300 hp @ 5000 rpm • 365 ft. lbs. Torque @ 4000 rpm 1987–1995 TBI Chevrolet and GMC C/K Series trucks Part Specifications. Description: The Class II Performance engine is for the serious performance minded person who needs power for a specific application.
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Removing Idle Stop Cap from a GM TBI and Adjusting the Idle Set Screw. For whatever reason you have determined that you need to adjust your base idle on your GM TBI vehicle. In most cases this is only done if you have modified the internals of your engine or you have swapped a larger throttle body onto your vehicle.Problems With A 1987 Chevrolet L05 350 TBI. I own a 1987 Chevrolet R10 pickup with a 5.7 TBI, the L05 I believe. It has the automatic 3-speed with overdrive. Despite 190,000 miles on the clock she has run perfectly until now, although quite heavy on gas. ... Fast Idle - fast in neutral and drive gears, ridiculously fast in park. Also idle ...View Full Version : Nonspecific Pages : 1 2 3 4 [5] 6 7 8 9 10 11 12 Need help with 350 head casting #'s.. intake; 1985 1/2 ton Truck with TBI vortex engine for a GM TBI application to read the data, or to check for stored codes. Consult a service manual or see below for any check engine light code definitions. You can use a late 80’s or early 90’s GM TBI definition. If you have access to a scan tool use a hook up for a 1990 350 cu. in. 5.7L Chevrolet truck. Exceptions to this were the TBI truck engines, which retained a flat tappet cam. Smeding sells the Chevy Stroker 383 TBI for $3,995. chevy 350 engine 87-95 4 bolt main non roller truck applications up to 3500 series Remanufactured and Rebuilt Engines for Cars and Trucks. Location: 93 vortec tbi 350, whipple, 3.

Nov 11, 2001 · high idle with a 350 TBI When it's sat for a while and I start the engine, it idles at about 1200rpm for the first couple of minutes, then drops down to about 900rpm, and a little while after that drops down to 6-700rpm where it idles at when warm. Turn the screw to adjust the idle speed to 650 RPM +/- 50 RPM. Turn off the engine and disconnect the negative battery terminal from the battery using a wrench. Reconnect the IAC valve. Reinstall the air cleaner and remove the paper clip from the ALDL connector.

Okay when i got this truck a week ago it was running kind of weird it wouldnt idle right and would not have the power you should get out of a 350 5.7liter so i put new spark plugs in new wires new distributor button and a new distributor cap i just took one wire off the old on as i was putting it on the same way on the new one so i didnt check the firing order! CFM Technologies specializes in GM Throttle Body Injection, Carburetor Spacers, and drag racing, circle track racing, and street & marine performance. We manufacture and design many of our own parts. for a GM TBI application to read the data, or to check for stored codes. Consult a service manual or see below for any check engine light code definitions. You can use a late 80's or early 90's GM TBI definition. If you have access to a scan tool use a hook up for a 1990 350 cu. in. 5.7L Chevrolet truck.

Loading... 1987 Corvette, 101,100 gentle miles. Very well cared for. This will not last long. New interior, new ceramic coated custom paint, Gray, Blue, Black, Blue tooth stereo and Phone connection, Chevy...

Chevrolet Camaro Workshop Manual (V8-305 5.0L VIN E TBI (1989)) Chevrolet Workshop Manuals > Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Ignition System > Electronic Spark Timing --> [Electronic Spark Control Module] > Component Information > Testing and Inspection > High Energy Ignition (HEI) System ...

The TBI unit is the heart of any problem when improving a TBI engine. The TBI units is a pretty close to a 2-barrel ~600cfm carb. In order to improve a TBI 350, it need to breath better. There is a list of mods to the TBI that will improve air flow in to the engine. CFM Tech is a great source of info for TBI improvements. Chevy Tbi 350

Fxr motocross helmetsProblems With A 1987 Chevrolet L05 350 TBI. I own a 1987 Chevrolet R10 pickup with a 5.7 TBI, the L05 I believe. It has the automatic 3-speed with overdrive. Despite 190,000 miles on the clock she has run perfectly until now, although quite heavy on gas. ... Fast Idle - fast in neutral and drive gears, ridiculously fast in park. Also idle ...

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    Oct 06, 2012 · 1987 Chevyc1500 with 350 TBI. Truck idles high. If I unplug the IAC the idle is fine. Symptom is the truck starts out idleing at about 700 rpm in gear and then slowly increases to about 2000 rpm. If I unplug the IAC then the it drops right back down. Threw an IAC at it. Have checked for vacuum leaks.

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    1987 Chevrolet Camaro Parts - Camshafts. Classic Industries offers a wide selection of Camshafts for your 1987 Chevrolet Camaro. Classic Industries offers 1987 Chevrolet Camaro Factory Muscle Cam, 1987 Chevrolet Camaro Magnum Cams, 1987 Chevrolet Camaro High Energy Cams, 1987 Chevrolet Camaro Performer Plus Cams, 1987 Chevrolet Camaro Performer RPM Cams, 1987 Chevrolet Camaro Rollin Thunder ... Howdy - My father in law's '91 Chevy was running poorly, so we put new plugs, wires, cap and rotor on it, and it's running better, but it it still surging at idle. It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously... Oct 30, 2006 · Discuss 1990 TBI 5.7 Idle surging,stalling in the alt.trucks.chevy forum at Car Dealer Forums; Truck runs great, but recently when the engine comes off the enriching circuit. I have a 92 tbi 350 that runs rich. I have replaced the m.a.p. sensor, o2 sensor and the computer does not bring up any codes. I don't know where to look next. I have one dumb question, would old plug wires make it seem like it is running rich like maybe there is a slight miss and a cylinder is... Chevy SBC 350 5.7L HP Stage 3 465/465 Camshaft Install Kit 1987-1995 TBI Engine 5 out of 5 stars 1 $219.78 $ 219 . 78 Chevy SBC 350 5.7L HP RV Stage 2 420/433 Lift Cam Camshaft & Lifters Kit Timing $190.55 $ 190 . 55 My chevy 1987 chevy Scottsdale with a 350 tbi sometime runs smooth then sometimes runs like its running with half the power or less like it has bad gas or something. I have replaced the fuel filter, oxygen sensor, air filter, it doesn't matter which tank I run it on, I've used fuel dryer (Heat) changed pvc valve, could be a injector going bad?

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      Mar 15, 2012 · My 1987 K5 Blazer keeps stalling. 350 silverado, 4wd, 90000 miles. Engine light is on.? When I'm in park and start the truck it will run for a little while and then stall out unless I rev the engine. If I put it into gear it will stall too. It doesn't do it all the time and it's not an idle problem. It will almost always stall in ... Feb 26, 2008 · Re: extream high idle problem on 1990 chevy 1500, 4.3 v6 TBI Thank you so much. I whiped that out in less than an hour, was obivious as soo as I got the TBI loose that the thing has been sucking in air for a long time. With the new $5 gasket it purrs like a kitten. I am amazed how nice it idles now. 1987-1995 Chevrolet TBI High Performance Engine 290HP Alberta $8,295.00 The troubleshooting procedure for high and low idle conditions are similar, which are included in the following: Difficulty Scale: 4 of 10. Step 1 - If the check engine or service engine light soon has illuminated retrieving the diagnostic trouble codes could lead you in the right direction of what the problem is, or is related too.

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hey my 03 silverado 5.3 v8 gas has a very rough idle, and stalls at low manuver speeds like turning at low speed or backing up. the tach read 0 yes zero and below, llights are dim and driving my tach reads normal untill i slow down the the problem reoccurs. at idle the voltage goes from 12 to 14 just bouncing around , i tryed the the MAF sensor cleaning and it helped somewhat i have already ...