A4 guys, quick question?¿
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TECH Apprentice
Joined: Jul 2002
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From: Canada
A4 guys, quick question?¿ Just had my PCM reflashed and need to know if it is normal for the idle to climb slightly sometimes (200-300 rpm) before it drops down, at the moment when you are shifting into gear, or does yours just drop down into gear with no idle increase whatsoever. I noticed this and can't remember if this is normal or if it is a telltale that I am still having problems with spontaneous acceleration.
TIA,
Ken
TIA,
Ken
Thread Starter
TECH Apprentice
Joined: Jul 2002
Posts: 308
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From: Canada
Re: A4 guys, quick question?¿
i think its normal ,,like if it was in N and drop it to D the rpm will drop.
mine drop 150 rpm to 250 rpm
,,
mine drop 150 rpm to 250 rpm
,, 
On The Tree
Joined: Nov 2001
Posts: 168
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From: Michigan
Re: A4 guys, quick question?¿ The PCM controls the desired idle speed in gear and out. The IAC needs to work smoothly in able to respond quickly to idle loads like putting vehicle in gear, alt and ac compressor loads.
I don't think your issues are normal unless you've got some Mod the PCM can't deal with or your new flash file has some goofy idle parameters.
If it were me: I would take a look at the IAC; make sure it isn't all carboned up. Look at the throttle blade stop adjustment, TPS adjustment and operation.
... Ron
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Joined: Nov 2001
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From: Fenton, MI
Re: A4 guys, quick question?¿ My car does this whenever I have the trans off the car and the fluid has been drained out. Once the new fluid works it's way through the transmission, it goes away.
Later.
Jordan
Later.
Jordan
Thread Starter
TECH Apprentice
Joined: Jul 2002
Posts: 308
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From: Canada
Re: A4 guys, quick question?¿ The PCM controls the desired idle speed in gear and out. The IAC needs to work smoothly in able to respond quickly to idle loads like putting vehicle in gear, alt and ac compressor loads.
I don't think your issues are normal unless you've got some Mod the PCM can't deal with or your new flash file has some goofy idle parameters.
If it were me: I would take a look at the IAC; make sure it isn't all carboned up. Look at the throttle blade stop adjustment, TPS adjustment and operation.
... Ron
It did this before the reflash as well. The car idles beautifully with only 6k on the odometer, there shouldn't be any issues of carbon etc. This car is kept in a climate controlled garage and has never seen rain. I just can't remember if it is normal for the revs to increase slightly during the act of shifting into gear or whether the rpm's just drop. The tech guy said it is normal but I wasn't sure so I thought I would verify it with another A4.
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On The Tree
Joined: Nov 2001
Posts: 168
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From: Michigan
Re: A4 guys, quick question?¿ OK: Just to see; I fired up my Truck, TA and wife's GTP, all 99's.
Truck: idles 750 in "P" ... drops right to 550 when put in gear.
TA: idles 750 in "P" ... eases up maybe 50 revs then drops to 550 when put in gear.
GTP: idles 750 in "P" ... stays put right at 750 when put in gear.
Prognosis: I think the looseness of the converter may play a roll in this phenomenon.
ok-ok, I know I have issues, but at least I have more than 6k on my TA ... 7.8K to be exact!
and BTW ... Is that 6k miles?
... Ron
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Verdad Gallardo Thread Starter
TECH Apprentice
Joined: Jul 2002
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From: Canada
Re: A4 guys, quick question?¿ OK: Just to see; I fired up my Truck, TA and wife's GTP, all 99's.
Truck: idles 750 in "P" ... drops right to 550 when put in gear.
TA: idles 750 in "P" ... eases up maybe 50 revs then drops to 550 when put in gear.
GTP: idles 750 in "P" ... stays put right at 750 when put in gear.
Prognosis: I think the looseness of the converter may play a roll in this phenomenon.
ok-ok, I know I have issues, but at least I have more than 6k on my TA ... 7.8K to be exact!
and BTW ... Is that 6k miles?
... Ron
Thanks for checking,
Ken