Question about 1987 Chevrolet S-10 Pickup

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1987 chevy engine problem

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 will not wind down. when i step on gas engine bogs down

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You have to reset base idle see manual at library for procedure

Posted on Jul 19, 2009

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Did you replace the fuel filter?

Posted on Mar 10, 2013

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SOURCE: 1987 Chevrolet S-10 Pickup1987 chevy s10 2.5l tbi

Check the trottle body postioning sensor...

Posted on Jul 19, 2009

pippall
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SOURCE: 1987 chevy S10 engine idle problem

relace the throtle air idle valve.The temp switch will allso cause this problem.

Posted on Jul 19, 2009

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I have a TBI on my Chevy and when I turn the key on it keeps running the fuel pump after the 2 seconds like to know what to look for and where to find it


didnt specify year model or engine --generic answer --if the tbi is flooding ---check the fuel pressure regulator --and the tbi itself

Apr 16, 2017 | Cars & Trucks

1 Answer

I have a 1987 chevy pick up truck.There is no fuel coming out of the injectors. Cant figure out why


First, make absolutely sure the fuel pump is running when the key is on and is pushing fuel to the TBI. Take the feed line off the TBI if you have to. Watch it, fuel will spray everywhere if you aren't careful. Most fuel pump "no run" problems are caused by a bad ground. Use a VOM to check for power and ground.

Make sure the injectors receive power when the engine is cranking to start. Might be something as simple as a blown fuse. Can check with a noid light or 12v test light. Remote possibility of the injectors losing power when via the ignition switch and/or wiring when you crank the engine.

Fuel pressure regulator may be defective. TBI must be disassembled to replace it. There is a nice aftermarket adjustable regulator available.

Internal to the TBI itself (SOME, BUT NOT ALL HAD THIS) is a small neoprene pressure bleed. It has a VERY small hole in it, used to slowly bleed off the fuel pump pressure when the engine is shut down. If the diaphragm ruptured the fuel will return to the tank, never building enough pressure to spray out the injectors.

These units are relatively easy to rebuild. Youtube has several good vids walking you thru the process if you have any doubts.

Jul 15, 2014 | 1987 Chevrolet R10

1 Answer

Has anyone had problems after disconnecting the factory alarm system in a 96 Chevy Blazer S 10?


you might want to check your fuel injectors as they might be going bad. AutoZone can test them for you. also check the fuel pressure at the TBI a "new" fuel pump doesn't mean it is good. ask the parts store the proper fuel pressure. also it might need the fuel filter changed.

Jul 28, 2012 | Chevrolet Blazer Cars & Trucks

1 Answer

1987 s10 blazer will start sometimes.Sometimes it will crank for a while ,then it will crank and feel like it ran out of fuel .Replaced fuel pu mp last year . cannot hear hum of pump ,but the truck starts.


Check Static Fuel Pressure engine off , Should be about 10 to 13 psi this will determine if Fuel Pressure Regulator is faulty , if pressure is bleeding off it will be hard starting... If you find a bad regulator then replace it with new... Bleed pressure off by removing fuel tank filler cap and by releiveing it at the fuel rail before the TBI unit....

Aug 18, 2009 | Chevrolet S 10 Cars & Trucks

2 Answers

1987 chevy S10 engine idle problem


relace the throtle air idle valve.The temp switch will allso cause this problem.

Jul 19, 2009 | 1987 Chevrolet S-10 Pickup

5 Answers

1987 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,...


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.

Jul 17, 2009 | 1987 Chevrolet S-10 Pickup

1 Answer

1987 Chevy S10 TBI 4cyl 2.5 L will not run. I changed a weak fuel pump and i am now getting good pressure. I swapped ecm's, changed fuel pressure switch, oil pressure switch, distrib, rotor, electronic...


Check the injector for 12v on one wire. if good check the other wire for a ground witth the key on. The ground wire pulses from the ECM If you dont have 12v from one wire to the other but you have 12v from one wire to battery ground then be sure the ground wire is good to the computer. If you don't have 12 v at any time check for open hot wire or bad fuse. ADD 12v to the hot wire at the injector. DO NOT add to the wrong wire or you will fry the computer

Jul 15, 2009 | 1987 Chevrolet S-10 Pickup

1 Answer

1987 chevrolet truck with tbi fuel injection


check your ecmb fuse in your fuse box,if fuse is good your computer might be bad

Mar 27, 2009 | 1987 Chevrolet S-10 Pickup

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