20 Most Recent 1991 Chevrolet S-10 - Page 3 Questions & Answers

here you go ,please let me know if this readable ,im using a new down load image

See if your getting spark,If not its probably the crank or cam sensor.

What was the fuel pressure at the motor, when you checked it ?

ok look under your dash where your brake pedal is the little switch there that is it when you push your brake the switch comes out turning the lights on when you let go of the brake the switch goes in turning the lights off..

No carburetor on the motor It is fuel injected Google a picture of the motor type

Do you know if the pump continues to run beyond the first 30 seconds ? Are you loosing fuel pressure ?

check for vaccum leaks on intake manifold. follow brake booster hose to engine and check for leak from there. Also check idle air control (IAC) this is what controls idling on todays vehicles. the IAC may be plugged, sticking, or bad. remove and clean if possible. Hope this helps!

There may be a vacuum leak that you need to find or the idle speed control motor is bad or sticking. There is no ADJUSTMENT for it.

What size engine is it if its the 4.3 v6 the order is 1-6-5-4-3-2

need to chack fuel regulater

My 1991 s-10 blazer with a 4.3 v-6 had the oil filter mounted under the hood behind the left headlight...there will be two lines that come from the block to the remote filter located there....hope this helps....Larry

check for vacuum leaks in the system usually near the booser area somewhere..

For most chev they are pressed into the block and then there is a piece with a nut that screws on somewhere to keep it steady. If it broke at the base where it is pressed in, my advice is get a very slim hard pick, and pry it around the edge until you can bend in the outer edge of the remaining tube. once that starts to fold, get some needle nose pliers and push it into itself more and it will just pop out. A new one will push in just fine, make sure you screw in the arm that holds it in place or you will replacing another one.

Then you have a fuel delivery issue...Verify fuel pump operation

You have a leak. A brake line leak or wheel cylinder.

If the handle is broke off and you can't pull it out. take 1/8 inch drill bit,drill a hole downward into the piece that is still in there.Take a sheetmetal screw,screw it in a little.Then pull it out.Hope this helps!