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Old 03-19-2016, 06:49 PM   #1
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Question Warm Start Problem Now Also Shutting Off While Driving

Hi everyone,

I have a 9-3 with 180k miles on it. Back in December I was having a warm start problem. We would go to a store, come out 15 minutes later and the car would start. Put in a new battery, CPS (Crank Position Sensor), and just recently replaced the DIC with a loaner.

We stopped doing short trips and had not had a problem since. Well that all changed. Took the car on the road and about 20 minutes later the car just died. Car wouldn't restart, got towed home, car started while on the tow bed.

Today I swapped the Fuel Pump Relay with a spare. Car as usual starts right up. But after about 10 minutes or so of me playing with the idle, going up to 1500k to 2000k etc, the car shuts off eventually.

I have access to a Tech2, no codes being pulled. Screen shots attached below. I had a bunch of misfires showing up but I believe that was when I had the issue with the DIC. Its still in memory but the numbers aren't changing so I assume the Tech2 is seeing the old information.

FORUM - SAAB | Photobucket

Thoughts on what I should try to do now?

Other things occasionally in the mornings I get a little white smoke (sweet smell) which indicated a bit of coolant. But ever since I put in a new radiator and thermostat, I have had no coolant missing in the reserve. I imagine its a small amount of coolant being burnt.
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Old 03-27-2016, 05:19 PM   #2
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Fuel pumps usually just go..but i wouldnt rule out replacing it if there is no history of it being done.
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Old 03-28-2016, 05:34 AM   #3
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I've seen fuel pumps go after warming-up.
your sure-fire way to know is to crank the engine and check fuel pressure when it doesn't warm-start. There's a valve on the fuel Rail. You can hook up a gauge, or just let it spray everywhere if you're into gas fires.
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Old 03-28-2016, 04:20 PM   #4
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Took out the CPS and did a resistance test and it was at 88 which is a 2 lower then specs so put in new Bosch CPS and looks like the issue is solved.
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Old 03-29-2016, 06:28 AM   #5
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Yep, I have personally seen non-OEM CPS be either broken out of the box or only last a few months.
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