98 3.2 lxi dying issue when coming to stop

Maddog56 · 2025-09-12T01:38:52-0400

Ok before and what I thought led me to doing the timing belt water pump and cam postion sensor is still happening. So before I did the tb ,wp and cps mom said she drove the car down to the store and it died on her when she pulled in. she cranked it back up after a few turn overs and it cranked but wiht a check engine light. it gave me a p0340 which is what led me to do the tb, wb, cps.

Now there have been a couple times mom said the car has died when coming to a stop, but she was able to crank it back up and it ran fine. I noticed this happen for the first time after I was pulling back up after the first drive from the replacements. The car shut off, the oil lamp light was on after it died. I cranked it up pulled up and saw that the car is idling 500-600 rpm. I'm not used to cars idling that low so I was thinking IAC but from the little digging I am finding that these cars idle this low?

I have saw mention of the oil pressure sending unit possibly being faulty.

I asked my mom if the car was doing the same thing on the dash when it had previously died and she said it she shuts off now indication on the dash but when it dies the oil lamp comes on and that is only does it when coming to a stop.

Any thoughts?

Maddog56 · 2025-09-12T02:16:46-0400

i also had let the car run for an hr straight while bleeding the coolant and making sure it would not over heat and it never died.

valiant67 · 2025-09-12T05:34:15-0400

I’d consider the crank sensor, especially if the tach drops quickly right before it stalls.
Oil pressure issue is probably the sender getting old, but that won’t cause it to die.

ImperialCrown · 2025-09-12T07:57:27-0400

Double-check the timing marks. Make sure that it hasn't moved off a tooth.

Maddog56 · 2025-09-12T15:15:51-0400

Timing is still good reverifed it again.. Car will run non stop in park.

I did notice the oil pressure sensor is oily.

Bob Lincoln · 2025-09-12T15:30:31-0400

500-600 RPM is normal for my cars.

Maddog56 · 2025-09-12T23:55:46-0400

Ok so rpms shouldnt be an issue.

When the car does it there are no warnings or indications. It just does it and then the oil lamp is on after it dies. that is the only indicator that is on after it dies.

ImperialCrown · 2025-09-13T07:12:11-0400

An oil pressure light will come on after a stall (engine not turning). This is normal. It should not come on at idle or leak oil. Replace it if it does.

Not everything leaves behind a fault code. If you are still dealing with P0340 (no cam position sensor signal at PCM), that can cause a stall & needs to be solved.
Was this code & stalling present before the timing belt replacement?

Maddog56 · 2025-09-13T13:44:52-0400

The p0340 was the code I checked when mom told me it died on her pulling up to the dollar store. That lead me to do a tb, we, tensioner, and new oem cam sensor. Since then in the 3 1 hr idle sessions I have not had any issues with it running

Maddog56 · 2025-09-13T15:23:15-0400

Video of the car starting first time in morning.

98 3.2 lxi dying issue when coming to stop

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