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Old 11-27-2017, 08:36 PM   #1
1slo9_4_oh
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Default Weird Engine and Trans Issue 95 940T

Weird issue. 1995 940t

Car is having a mis cold, warms up and then a miss between 5-6k and all while this is happening the trans is holding the gear.

All I did was replace intercooler piping, couplers and deleted the bov/reinstall cbv

Trying to diagnose it but anything I try, I have either fixed or have replaced in the past.

But feel free to chime in on any suggestions and I'll let you know if I have replaced/fixed/or overlooked

Car has gone through a Stage 0 phase.
Did a ipd turbo cam, 2.5 exhaust and do88 intercooler all within last 2-3 months.. disregard Sig- not the car I'm talking about
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Old 11-30-2017, 08:08 AM   #2
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Have you performed a boost leak test after your intercooler and cbv work?
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Old 11-30-2017, 01:32 PM   #3
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Crush it?
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Old 12-01-2017, 04:14 PM   #4
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Have you performed a boost leak test after your intercooler and cbv work?
No I have not. Few days later and everything is running perfectly fine again.. weird
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Old 12-01-2017, 04:15 PM   #5
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Crush it?
Is it that Obligatory quarterly short convo of the year time again?! We need to catch up!!
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Old 12-02-2017, 12:34 PM   #6
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LH might have needed time to relearn after switching back to the cbv.
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Old 12-07-2017, 01:29 PM   #7
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It looks like the issue has happened to a ton of people with no definite answer on a resolution. I'm leaning towards it being a bad tps switch

Last edited by 1slo9_4_oh; 12-08-2017 at 07:52 AM..
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Old 12-07-2017, 06:17 PM   #8
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Quote:
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Crush it?
Or post in the correct forum
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Old 12-07-2017, 07:23 PM   #9
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Tps won't cause that. Tps only tells the system if it is at idle or wot (non turbo). No affect of mixture or timing outside those two points.
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Old 12-08-2017, 07:51 AM   #10
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I don't think it's timing. I'm guessing the throttle isn't positioned correctly while at a cold start.
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Old 12-08-2017, 07:52 AM   #11
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Or post in the correct forum
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Old 12-08-2017, 07:54 AM   #12
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Reason im guessing its a bad tps switch is when unplugged at idle the car returns to normal idle.. 850-9 and smooth. Plugged in its idling at about 450-500. And makes my ipd turbo cam sound like a vx stage 3 lmfao
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