20 Most Recent 1987 Chevrolet S-10 Pickup - Page 3 Questions & Answers

check your fuel pressure,check for voltage at wires going to injector with a test light,should flash on and off while cranking over the engine,if not,cam sensor is bad

first of all i need to know if the vehicle will start without the toggle switch? if it does then you can just remove it if the vehicle will not start without turning the switch on you should know that the initial power is from this switch so mostly you have problem in the ignition switch and you have to repair or replace the ignition switch before yo disengage the toggle switch.

Try replacing your spark-plugs/wires, cap/rotor, air-filter. Spray some WD-40 on the throttle-body recoil spring.Get a can of carburettor/throttle-body cleaner and spray the inside of the throttle-body.

on the driver side of the distributor is where your blot is it should be a nine sixteenths there is a special wrench you should use if you can. it makes it easier. that is all you need to loosen

Just about all you can do is, with the engine off, from under the hood open the throttle all the way and check if the TV cable is tight. And check the fluid level, smell if its burnt or look if its brown.

Other causes could be,
Sticky governor
Sticking shift valve
Worn bands

Many years ago my mom's first 4 speed automatic was a 84 S10 2.8 2wd. She did not know it was a 4 speed and the indicator was broke so she counted the clicks to find drive. She was driving in the hills in over drive and all the downshifting was too much for it (should have driven in hills in 3rd gear). After that the transmission would not shift out of second gear.

did you check to see if your getting spark? there could be a couple of reasons for your perticular problem. i need more info to pinpoint the problem. check to see if your pump relay kicks in. then get back to me ok. also lift the distributer cap and crank engine make sure the rotor is turning

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.

From the map sensor to vacuum port on the front of the TBI unit somewhere near the fuel inlet and outlet lines

othe fuel filter is on the driver side behind or slightly infront of the rear wheel on the frame, looks like a silver can, only a tid smaller. There is another filter that is in-tank affized to the bottom of your fuel sending unit. Its a pain to do but there is worse. Why do you feel you need to change the fuel pump?

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.

Try the auto parts store.

you need to know what the check engine line has come on for there should be code set in the computer.this will go a long way in finding out what is causing the problem,several things can cause this,it could be a map sensor,problem in the distributor,or anything without knowing the code you can spend alot of money chasing and replacing things that don`t fix the problem

Will be a single wire, under the hood, on driver side, by fire wall, could be green or red, will have a female connector at the end, that's where you add voltage to test fuel pump.

Replace the EGR Valve. It may be stuck ,you could try to clean it.but sounds like that might be your problem.

purchase a Haynes Manual at Auto Zone or another parts store. There are pics and layouts of where things are connected.