it could be a lot of things, you should start by checking the ignition, disconnect spark plug wires (remember which goes where first) and make sure u put them next to something with ground (-) ( like the engine block) and have someone crank the car, if they dont spark that means you have bad cables or bad ignition coils, (you can get the ignition coil checked at autozone for free) after that you might want to check the ignition fuse. and all others while your at it. if that dont work just reply, ill help u out.
It is the main computer box.
The idle speed on a 1987 Chevy Celebrity is controlled by the engine computer, there is no way provided to adjust it.
The timing on y our 1987 Chevy Celebrity is controlled by the engine computer, there is no way provided to adjust it.
Does your 1986 Chevy Celebrity have the 2.5L 4 cylinder engine or the 2.8L V6?
No Chevy Celebrity ever had a 4.0L engine
Timing on a 1987 Celebrity is controlled by the engine control module, computer. There is no provision for adjustment.
not downshifting.
The computer, ECM, is on the firewall inside the car and behind the glove box.
The computer is mounted to the firewall on the inside of the car behind the globe box.
The 1987 Chevy Celebrity uses an electronic speedometer, there is no speedometer cable. Assuming your speedometer has failed here are some possible causes: The VSS. vehicle speed sensor, may have failed. The speedometer may have failed. The ECM, engine control module aka computer, may have failed. There may be wiring issues such as unplugged, dirty connections, broken wires, etc.
Which engine does your car have?
Drop the fuel tank.