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Old 04-28-2005, 12:07 PM   #1
beensmoked
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2001 L-Series 3.0L Sedan
2002 L-Series 2.2L Sedan
Default Maf, Recal And Down Shifting

Alrite my car hasn't been downshifting properly when i floor it etc etc....i just replaced my MAF sensor...and i've been reading that u need to Recal the computer for it? Would just replacin the MAF sensor cause this without recal? And also would a defective transmissions pressure soloniod cause a car not to downshift properly?

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Old 04-28-2005, 12:43 PM   #2
Qlara
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Default Re: Maf, Recal And Down Shifting

Not sure about the details, but a faulty Throttle Position Sensor(TPS) may also the cause. How's the car in idle speed?

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Old 04-28-2005, 02:50 PM   #3
slo5oh
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Default Re: Maf, Recal And Down Shifting

beensmoked,
The computer will recalibrate itself after a week or 2. I reset mine after cleaning the MAF, SES never came back but I replaced it a week later (when the part came in) without an ECU reset and the car drove a little hard for the first week or so. It's now driving like it's new again.
I seem to recall the car always downshifting a little funky (not sure if it's doing it now too). If you give it 1/2 throttle when you're rolling it can't figure out if it wants to downshift or not. I'll have to test it out and see if this is still a problem.

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Old 05-01-2005, 01:18 AM   #4
beensmoked
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Default Re: Maf, Recal And Down Shifting

Quote:
Originally Posted by Qlara
Not sure about the details, but a faulty Throttle Position Sensor(TPS) may also the cause. How's the car in idle speed?

it idles normal same as it was before this happened

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