another kills while driving thread

[fastest30onblock]

Alrighty, well its an 88 325IS, its been happeing more and more lately, i will be driving down the road and it will kill the check engine light will flash and kick right back on agian 1-3 seconds later. and when im sitting at a flight at perfect idle it will stumble on itsself and kick off i dont believe it to be fuel relate and from what everyone say it is the main relay(from other posts) could it be that, an ignition coil maybe plugs or wires, i dont know any help would be great. Thanks guys Drew

[jlevie]

Does the tach go to zero during an event? If it does look to the main relay, CPS, and wiring. If the tach doesn't drive to zero, consider the coil, C101, and fuel pump relay.

[StereoInstaller1]

The main relay is the easiest to test: takes like 15 seconds, then drive.

[fastest30onblock]

what is the cps and the c101? thanks for the help guys

[fastest30onblock]

so i just got back from a drive and it only did it 3 times twice at take off i replaced the fuel relay (3rd one in that little box) ihad one laying around

[CoClimber]

My engine did that. It was the coil. I agree that the first thing to check is the main relay.

Doug

[fastest30onblock]

so i stuck a new main relay in yesterday and it did it again on my way up to long beach last night? wtf?!

[Wh33lhop]

so i stuck a new main relay in yesterday and it did it again on my way up to long beach last night? wtf?!

Well, that's what happens when you blindly replace things.

Diagnose the problem. Did you test the relay? The CPS is the crank position sensor and the C101 is the connector plug on the driver's side firewall under the hood, it basically lets the car talk with the engine and ECU.

[fastest30onblock]

thanks so it stopped for a while but tonight it started acting up again hard core when not on the gas it would kill the tach would go to zero and the mpg gauge reset could it be an issue with my ecu or markd chip or what thanks