94CutlassXtreme Posted August 4, 2006 Report Share Posted August 4, 2006 Alright so my car still has a crank but no start condition. Fuel pump is new, and there is pressure up to the rails, so it would seem that the injectors are not pulsing. So basically, what I need to know is where else do the injectors get the signal to pulse from besides the ECM? The car ran fine, I parked it at work, then it started for a second when I left, died and now wont run. Do the injectors get signal from the ICM? Or maybe the Crank Sensor???? HELP ME PLEASE!!!!!!!!!!!! Quote Link to comment Share on other sites More sharing options...
94CutlassXtreme Posted August 4, 2006 Author Report Share Posted August 4, 2006 I doubt its simply a wiring issue, the car started missing under load, it got a lil worse, then all of a sudden it won't start. I'm leaning towards a component failure. I checked a wiring diagram, and it looks like the crank and cam position sensors are in the injector circuit. Question is, is it the crank sensor down by the crank pulley? Still tho...ICM? Quote Link to comment Share on other sites More sharing options...
GP1138 Posted August 4, 2006 Report Share Posted August 4, 2006 Check the wiring from the ICM to the crank sensor, which is down the back of the engine. This sounds like exactly what happened to me. The exhaust manifold melted through that wiring to the crank sensor and caused missing and eventually a no-start condition. Quote Link to comment Share on other sites More sharing options...
Robby1870 Posted August 5, 2006 Report Share Posted August 5, 2006 Yeah, I had the same thing on my 92 several years ago. Took me a very long time to figure out the problem. Quote Link to comment Share on other sites More sharing options...
94CutlassXtreme Posted August 5, 2006 Author Report Share Posted August 5, 2006 So this wire runs from the ICM down to the crank sensor located behind the crank pulley? Quote Link to comment Share on other sites More sharing options...
GP1138 Posted August 5, 2006 Report Share Posted August 5, 2006 So this wire runs from the ICM down to the crank sensor located behind the crank pulley? I believe so. It's down on the pass. side of the engine, reach down, it's down in a hole in the block between the engine and the firewall. It's not hard to remove, and the wiring is easy to get to. Make sure that wiring is all solid. Quote Link to comment Share on other sites More sharing options...
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