02 Deville Sudden Stall

[danielscherbing]

I recently bought a 2002 Deville. I have experienced twice now a sudden engine stall. Once when coming to a stop at a light, I noticed warning lights but didn't hear the motor quit. It fired back up immediately. The second time, I was idling after pulling out of the garage. Engine quit suddenely. It fired back up and has not happened again.
Also, I have noticed a very small flutter in the headlights when driving. It is almost as if they shut off completely for s split second and then are back on. I don't see it happeneing with anything else and I have already replaced the bulbs with no change.
And third, I do notice a rough idle when cold, the motor seems to hop a little. I have tried the injector/fuel cleaners with no change.
The car has approx 61000 miles. Let me know what you think! Thanks!

[FrankT]

Sounds like the ever famous 00 -02 Crankshaft Position Sensors (CKP)'s Reolace both sensors.
Try pulling codes, you may or may not have some.
The sensors are common problems in these years.
Frank

[dp102288]

There is a writeup on how to change the sensors in the somewhere on the forum. A search will point you in the right direction.

[codewize]

Yup, again.

[submariner409]

This is just a SWAG (scientific wild-ass guess), but the headlight "flutter" may be due to the microsecond shutdown caused by the crankshaft position sensor(s) triggering an intermittent "engine off" signal. We would like to find out if that problem disappears after you replace the CKP sensors 1 AND 2.

[dp102288]

^^ Very interesting with the shutoff signal...

[turbojimmy]

The headlights on my '01 will dim suddenly at random, but only for a split second. It corresponds with some other clicking sound at the back of the car. I guess it's some kind of big electrical draw. They don't shut off, but I can see them dim very briefly if I'm sitting in traffic and the lights are reflecting off of someone's car. I haven't noticed it while driving but I'm sure it happens.

Also, I'd guess your crankshaft position sensor(s) are bad (and not related to the headlights).

Jim

[submariner409]

^^ Turbojimmy......Could your headlight dimming be caused by the ride height compressor cycling? If so, there MAY be an air leak somewhere back there......A flood rebuild may have a loose hose nipple or something.....

[turbojimmy]

Originally Posted by submariner409

^^ Turbojimmy......Could your headlight dimming be caused by the ride height compressor cycling? If so, there MAY be an air leak somewhere back there......A flood rebuild may have a loose hose nipple or something.....

I'm not sure. I replaced the compressor when I rebuilt the car. I've never tried to pinpoint the noise. Today I was putting air in the left rear tire (slow leak) and I heard the clicking. Not sure what it is. It's always 6 clicks, kind of like an on/off, on/off, on/off kind of thing. Until today it sounded like it was in my front driver's side door.

Jim

[dp102288]

Interesting idea about the leaky air compressor!