Intermittent Engine Stalling, high/low speeds

[governor]

My 93 SHO, with automatic transmission, normally runs fine. Twice in the past couple weeks, it has shown a stall-out tendency. One time, it died at a stop-light, and it was difficult to re-start. It had to crank 4-5 times before it would start. I parked it overnight, and the next day, it started up and ran perfectly. I put in a can of injector cleaner, and a couple weeks went by with no problem, so I thought maybe that had taken care of the problem. Today, I was driving 55 mph using cruise control, and the engine suddenly seemed to lose power. I stepped on the accelerator, held it down, and it finally began to pick up speed again after a few seconds. There was no choking, or sputtering, just no power, but suddenly it took off again. It has been fine since then.

Any suggestions on what this problem might be?

~Gerry

 

[projectSHO89]

These are classic symptoms of a failing camshaft sensor. Of course, other things can cause these symptoms including the crank sensor or fuel delivery system, the the cam sensor is a common cause.

Run your codes and see if any are set.

Next time you you have the cranking but no starting symptom, observe both your tach and your CEL and report your results.

BTW, a Wells F134 from AutoZone for $29.99 is the suggested replacement if that's what turns up.

Steve

<small>[ June 18, 2003, 10:27 AM: Message edited by: projectSHO89 ]</small>

 

[sdpatt]

You can find out how to read the EEC codes here. DaliDesign is another good web site for this testing with the code description links near the top of the page.

Does the engine cut out as if you turned off the ignition key? Watch that tachometer. If it drops to zero during these events than it may be the crankshaft position sensor (CPS) that is referred to as the PIP (profile ignition pickup) in the code descriptions.

 

[MO-KAN SHO]

You might want to check out Betty Davis' problem... seems be similar if not the same.

http://www.shoforum.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=17;t=006447