Question about Chevrolet R10

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Looking for location of ECM on 87 chevy R20

Replaced fuel pump in my truck, rebuilt TBI truck runs fine for a few minuits then speeds up, stop the engine restart then floods real bad this problem was happening before I replaced fuel pump in duel tanks

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 2000 chevy silverado 1500 4.3 eng

Chevy Trucks, Blazers, S10 pickup and the like will vapor lock ecspecially the 2000 models. Do not tighten the gas cap past 1 click. There is a tube that runs from the top of the tank down and this gets hot and collapses or burns in half. We just bought a reinforced rubber tube cut it to lengh and use it instead of part and it's worked grat for 2 years so far.

Posted on Feb 01, 2009

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paconos2007
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SOURCE: 1990 chevy camaro with a rebuilt 350 Tbi

fuel pressure isnt right.. need to get a fuel pressure regulator so you can regulate the gas flow..

Posted on Apr 21, 2009

csmock132
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SOURCE: 87 chevy truck with TBI idles too fast

Spray the intake with carb cleaner to find the vacuum leak. Check where the EGR mounts and the throttle body gasket sense you had both off.

Posted on May 10, 2009

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SOURCE: 1987 chevy s10 2.5l tbi will not start. changed

That eliminates the crankshaft and camshaft position sensors. Have you checked the fuel injector itself for an open winding or stuck valve plunger? There should not be a steady 12 volts to the injector--if good injector, it would be spraying fuel steadily into the throttle body. But at least the engine should try to run if poorly. Take the injector out, dry it off with air, and intermittently apply 12 volts to one terminal while grounding the other. You should hear a click from inside every time you touch 12 volts. If not, replace it. If it does, it may be plugged with debris. Try blowing through it in reverse with compressed air.

Posted on Jul 17, 2009

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SOURCE: My 87 blazer died, changed fuel pump,rebuilt tbi.

Before you start self repairing, you really should by a manual with proper diagrams to prevent heading in wrong directions.
The PCM doesnt control injector POWER. It controls injector GROUND. The POWER comes from the ignition switch and goes thru a fuse in teh fusebox probably marked ECM1 or ECMa. If you have power at both sides of that fuse with the ignition key in the ON position, then you have a broken wire between the fuse and the TBI. If you have no power to that fuse, you may have a broken wire, blown fuse, or defective ignition switch.

Posted on Oct 04, 2009

Testimonial: "Thanks For info. Had A broke wire at fuse panel. repaired wire and blazer started right up. Thanks Again."

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I have an 85 Chevy K10 with ECM computer and a TBI system I've rebuilt rebuilt a TBI system put a new fuel pump high volume and replace the pump relay now when I turn the key to on


Hello Jesse,

What does not shut off?
And what are you referring to when you say "the 2 second or 3 second turn on.

Please clarify your issue and include some more information on your K10 model and engine.

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89 chevy 3/4 ton. 2wd. 454. AT. truck runs good


check your timing, check that your ignition pick up coil is good. also check your fuel pressure. and check for any vacuum leaks. double check your coolant temp sensor to the ecm it tells the ecm what temp it is and the ecm adjusts the fuel amount accordingly.

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87 chevy 350 tbi will only start if if pour gas in the throddle body then keep it running by pumping the peddle. It seems to starve at higher rpms, and when it does idle the rpm's swing from hig


Sounds like the fuel pump is going bad(or in this case,has gone bad). I suggest that you change the fuel pump and use a fuel cleaner in your gas tank as dirty gas may have caused the problem to begin with.

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350 with TBI intermittent injector pulsing


this could be a bad ingnition module or a loose wire. but i think on this truck the injectors do get singnal from the ecm

Jan 06, 2010 | 1987 GMC Suburban

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90 chevy 350 with TBI starts but wont stay running changed fuel filter and fuel regulator dont know what next


I have a 90 chevy k1500 350 tbi with same problem! I have traced problem to... after turning on key fuel pump kicks on when u crank it over injectors shoot gas and truck starts! After few seconds injectors stop spraying and truck dies! This can happen many times over and over! Eventually sometimes truck stays running and all is great! I changed ignition module, oil pressure sending unit (which i was told controls gas after vehicle is running) fuel filter, computer, fuel pump relay, I am at a loss now! Hope this helps and hope someone can help me!

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Sputtering


It may sound obvious, but have you changed your inline fuel filter? if so, try a"fuel system cleaning" next.  available at most oil change garages. It runs anywhere between $60-120 and does a pretty thorough job of flushing out the fuel injectors and cleaning out of all the fuel delivery components. I've seen some amazing results with the flush.

May 25, 2009 | 1987 Chevrolet R20

1 Answer

87 chevy truck with TBI idles too fast


Spray the intake with carb cleaner to find the vacuum leak. Check where the EGR mounts and the throttle body gasket sense you had both off.

May 10, 2009 | 1987 Chevrolet R20

2 Answers

1990 chevy camaro with a rebuilt 350 Tbi


fuel pressure isnt right.. need to get a fuel pressure regulator so you can regulate the gas flow..

Apr 21, 2009 | 1990 Chevrolet Camaro

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87 CHEVY BLAZER, FUEL PUMP NOT GETTING POWER


It's your Electronic Control Module (ECM). There is a short in the computer. You're going to have to replace it. The same symptoms occurred in my vehicle, had a mobile mechanic come to my house and fix the problem. Quoted me $350 for parts (used) and labor.

Mar 15, 2009 | 1987 Chevrolet Blazer

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