20 Most Recent 1991 Chevrolet Caprice - Page 2 Questions & Answers

Fuse box is located at side of the driver. just open door and locate door of fuse box beside the out of the a/c windows. There is other fuse , the Computer fuse, located on engine location, passenger side . near the hood support, beside the relys

if auto , check the flex plate at the torque converter for cracks check ring gear for burrs possible big end bearing possible piston or broken ring test by removing a plug and cranking it replace the plug and go to the next plug repeat the process until the knock stops with that plug removed

#17 and #18 work with this circuit. located left side of the dash. You need open driver door to see fuse box cover

Faulty flasher

could be cause by idle air control valve on the throttle body, usually u can remove and clean put it back , make sure unhook battery before removing

Pass front side of crankshaft for the crank sensor, the knock sensor is the only sender on the rear of the head, If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_4c166ba81493f541

did you take the old one off yet. first thing you can do is buy the shop manul. or autozone.com has a good how to section. changing the alt is not that hard. first you need to disconnect the battery to stop from shorting out the power. then its just a matter of removing a few bolts and the belts. once the belts are out of the way you can remove the alt and then get to the bracket. some cars are a lot harder then others. some have the power steering in the way which is a huge head ache. also look on youtube. a lot of people post there videos now and can be same help

Sounds like you have a short in the wiring some place that is providing power to the ignition and computer with the key switch off. You may have to test the circuits with a test light to find the short. Could also be a faulty relay.

remove horn pad remove steering Wheel with puller remove steering lock and flasher assembly remove bolt that lock the cylinder remove ignition baril reverse proc, hope it help

need same tool first remove horn pad then stering wheel remove stering lock ring remove direccional switch then remove cylinder

If your ABS light is coming on, you have a brake problem and it should be checked out by a pro not someone that is looking for a ABS "fuse".

if you remove the battery it disables the airbag firing mechanism. I would still be extremely careful because I thing they use some kind of explosive cap to fire it. If you aren't comfortable find a mechanic to do it for you. better safe than sorr

I PUT A 350 1500 V8 MOTOR IN MY CHEVY CAPRICE. GAS IS GETING UP THREW THE LINES INTO THE INJECTORS BUT.NOTHING COMES OUT THE INJECTORS??? NOW ONE SIDE SPRAYS..... WITH THE GREEN AND RED WIRE. BUT THE OTHER SIDE WITH THE...BLUE N GREEN WIRE NOT SPRAYING UNLESS I TOUCH IT WITH A WIRE FROM MY BATTERY POST (POSSITIVE POST) WHAT TO DO???

First understand how the fuel injector circuit works that causes them to spray fuel out, then you could probably find the problem. It's really simple, the key thing is that the hot wire to the injector (there are only two, a power wire and a ground wire) is always hot anytime the ignition key is in on, or run, or start. It is a fused circuit that is powered on when the key is on. The fuse is either in the distribution box under the hood or in the instrument panel fuse block. The ground wire from the injector goes into the computer where it can be internally grounded inside the pcm for a split second. This is what causes the "pulse" of the injector, a needle is raised electromagnetically, and fuel under pressure is sprayed out. The computer can vary the pulse width, by duration of ground time, and really fine tune the gas metering. Check for power at the injector connector with key on. If nothing, check the injectors fuse, and trace it back to the ignition switch. If there is power on the hot wire, one way to further test the circuit is to go buy a cheap "noid light," a tester at any parts store-different sizes, but easy to find a standard for gm vehicles. A noid light checks power and ground wires at the same time. Now that you understand "pulse", a noid will blink as if it were being pulsed-well it is, just that. Hook it up to an injector connector, and the engine has to be cranking over-that is when the computer is grounding the circuit repeatedly-when the engine is running and when it is cranking by the starter. If the noid light blinks, the circuit is working correctly. If the light doesn't turn on at all, first verify that the power wire has power with key on. If it does, problem may be in the ground side of the circuit, or in the pcm itself.