Boost's Performance Attempt - Page 58 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 05-04-2007, 06:10 PM   #571
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Bill, I think you're probably right about the TM, especially if it happens when coasting. Keep plugging away!
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Old 05-04-2007, 07:45 PM   #572
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Quote:
Originally Posted by BillBoost37
Not really Karl.

The theory is if the engine is being force fed too much air, maybe there'* not enough fueling mapped and being delivered to offset the air and that could cause predetonation through heat etc.
In closed loop mode that is not an issue, the PCM will read the O2 sensor and correct the fuel. You'll see that in the STFT and eventually the LTFT.

If either the torque converter is locked under light throttle or you're decelerating, then other PCM parameters may be a factor.

When you do your scan, add the TCC duty cycle to the items I listed before.

Cheers,
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Old 05-04-2007, 11:26 PM   #573
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Quote:
Originally Posted by Foghorn
When you do your scan, add the TCC duty cycle to the items I listed before.
Cheers,
Now he tells me. Think I found the source of the knock. Motor revs and transmission does nothing. Some noise from the trans.. but no movement at all.

Fluid is up to level, clean....looks absolutely like it'* the fluid of a new transmission with 4,000 miles on it.

Pat and I were out driving.. getting a confidence feeling in the motor, I was planning on driving 120 miles tomorrow morning. Got off the highway, came to a light and got free revving. Pushed off the road, checked the fluid which looks great.

Thinking maybe this was the low throttle KR. Got 4 scans tonight.

Looks like the car might sit out during NEBF :(

Hey Paul.. Earlier in this thread you said you had the same symptoms. If that'* true..you've just read some bad news for your tranmissions future.
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Old 05-04-2007, 11:52 PM   #574
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Good heavens Booster man, sorry to hear of yet more trouble. As odd as it seems, maybe now is a good time to buy a lottery ticket!

Cheers,
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Old 05-04-2007, 11:53 PM   #575
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no way.... this thread is nothing but one sick joke after another!... im really sorry to hear this Bill, thats gotta be the worst thing that could happen right now :(

keep your spirits up bud, where all rooting for you!
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Old 05-05-2007, 12:03 AM   #576
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Were you able to get the car going again after you pushed it off the road? ie after it cooled down some?

Ditto on the lotto ticket, lucks gotta turn around on you sooner or later.
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Old 05-05-2007, 12:33 AM   #577
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Car is home now. Odd thing is on the Aeroforce was trans temp and kr. I was showing Pat how nice and cool the trans runs. It ran up to 180 and stayed there in 64F weather. Seemed a little odd..
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Old 05-05-2007, 12:40 AM   #578
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Not following you there boosty.
You drove the car home?
The trans temps were good then shot up to 180?

Now this sounds like what happened to me in Wahington 2 summers ago, only difference was my fluid was burnt bad. Let it cool and limped to driverjohns for some tlc.
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Old 05-05-2007, 01:09 AM   #579
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4k and possible trans problems

This whole ordeal is just insane Bill. I'm going to go have a stiff drink for you
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Old 05-05-2007, 02:40 AM   #580
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Free reving?

I've got it inconsistently when I come to a stop once early on, in a journey..
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