Back from the track - - the car is broken.....short version of the story - hope someone can help....
08-13-2006, 03:47 PM
#11
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If you swapped Ignition Amplifiers (POS) and the misfires persisted on the same bank it's not...
the POS. If you have a channel that has gone bad causing a misfire (usually on one channel, two at most, but very rarely all 3) and you swap the POS's it should go from bank one to bank two.
No boost may have been limp mode caused by something else.
Check your brake booster vac feed, hose and check valve.
No boost may have been limp mode caused by something else.
Check your brake booster vac feed, hose and check valve.
08-13-2006, 03:48 PM
#12
AudiWorld Super User
Thread Starter
not yet, I got home and posted hoping people would see it before it gets too late....
I have a lift in my garage and plan to put the car in the air, take the belly pan off and do a pressure test this PM.
I may pull the lower IC hoses to see if there's any oil in there.
I may pull the lower IC hoses to see if there's any oil in there.
08-13-2006, 03:58 PM
#14
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Since I do the misfire under load thing on a daily basis, I'll give my .02
I spend very little time on this. I verify a misfire under load which is enough to point to the ignition system. I find out which cylinder it is and sell a coil and plug for that cylinder. If that doesn't fix it then I diagnose it;-) I'm not exaggerating when I say that replacing the coil and plug fixes 99 out of 100 COP ignition system vehicles.
I recently started getting misfires under load and was happy to wait until I got a misfire code. Instead of getting a misfire code, the miss went away and I started getting throttle cut and an EGT code. I haven't logged an event but since I have an ACV-R I'm sure it's throttle cut killing my boost. I'm starting to wonder if the stray voltage from the misfire didn't pop my EGT sensor.
If I were you, I'd go ahead and replace the #6 coil(was #5 right?) and the #5 coil boot as well as both 5 and 6 plugs. Then focus on the throttle cut if it's still around.
I recently started getting misfires under load and was happy to wait until I got a misfire code. Instead of getting a misfire code, the miss went away and I started getting throttle cut and an EGT code. I haven't logged an event but since I have an ACV-R I'm sure it's throttle cut killing my boost. I'm starting to wonder if the stray voltage from the misfire didn't pop my EGT sensor.
If I were you, I'd go ahead and replace the #6 coil(was #5 right?) and the #5 coil boot as well as both 5 and 6 plugs. Then focus on the throttle cut if it's still around.
08-13-2006, 04:19 PM
#17
AudiWorld Super User
Thread Starter
thanks - will do. What is strange though is that my vac readings on my boost gauge....
are completely normal!
I'd think limp mode would at least allow me to make some boost.
I have no N75 control over boost, MBC (or EBC only).
I'll check all the stuff!
I'd think limp mode would at least allow me to make some boost.
I have no N75 control over boost, MBC (or EBC only).
I'll check all the stuff!
08-13-2006, 04:21 PM
#18
AudiWorld Super User
Thread Starter
will do - - I'm going to need to find a LONG road. I think it's literally going to take 3 miles....
to get to redline in 3rd.
Can I just do a second gear run?
Seriously, the RPMs climb so slow it might be difficult to log 3rd.
Can I just do a second gear run?
Seriously, the RPMs climb so slow it might be difficult to log 3rd.
