Car Dies in Reverse
12-30-2002, 05:00 PM
#2
TECH Senior Member
Re: Car Dies in Reverse I'll move this to Computer Diagnostics and Tuning.
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12-31-2002, 08:25 AM
#3
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Re: Car Dies in Reverse Thanks for moving it to the right topic. The car has heads/cam, 3000 stall converter, 3.42 gears, no cats, and bolt on mods (air induction, exhaust,ls6 intake manifold, etc). Could it be the tuning? Also, sometimes when I start it up when the engine is cold, the car seems like it wants to die and surges.
12-31-2002, 11:06 AM
#4
TECH Senior Member
Re: Car Dies in Reverse What are the specs of the cam?
At what speed is your idle set? (Might need to be set higher.)
Is this a new problem or just started right after the cam change?
Have you drilled the hole in the throttle body out?
Or made any PCM adjustments to the IAC?
Have you done the idle relearn procedure?
At what speed is your idle set? (Might need to be set higher.)
Is this a new problem or just started right after the cam change?
Have you drilled the hole in the throttle body out?
Or made any PCM adjustments to the IAC?
Have you done the idle relearn procedure?
01-01-2003, 11:58 AM
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Re: Car Dies in Reverse </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Colonel:
<strong> What are the specs of the cam?
At what speed is your idle set? (Might need to be set higher.)
Is this a new problem or just started right after the cam change?
Have you drilled the hole in the throttle body out?
Or made any PCM adjustments to the IAC?
Have you done the idle relearn procedure? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Cam is: 224-224-114
Idle set at 900 rpm
I was told drilling a hole in the TB was for the MN6 cars and A4s do not need to if the cam is not that agressive.
This has happened before the H/C and it would say "Pull Key, Wait 10 sec". I do have column lock bypass on the car.
This is what is happening lately, First time I would start the car for the day, the car would surge and the tach would go down and kinda sputter (almost die) and this would go on for maybe 1 minute until the car is warmed up. After warmed up, I put in reverse and it doesn't die. After driving it for 15-30 minutes than let it cool down for 1/2 hour-1 hour, I would put in reverse and the car would die out after 10 feet in reverse and the "Pull Key, Wait 10 sec". After waiting 10 sec, it is fine. Any suggestions on what to do? Thanks!
<strong> What are the specs of the cam?
At what speed is your idle set? (Might need to be set higher.)
Is this a new problem or just started right after the cam change?
Have you drilled the hole in the throttle body out?
Or made any PCM adjustments to the IAC?
Have you done the idle relearn procedure? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Cam is: 224-224-114
Idle set at 900 rpm
I was told drilling a hole in the TB was for the MN6 cars and A4s do not need to if the cam is not that agressive.
This has happened before the H/C and it would say "Pull Key, Wait 10 sec". I do have column lock bypass on the car.
This is what is happening lately, First time I would start the car for the day, the car would surge and the tach would go down and kinda sputter (almost die) and this would go on for maybe 1 minute until the car is warmed up. After warmed up, I put in reverse and it doesn't die. After driving it for 15-30 minutes than let it cool down for 1/2 hour-1 hour, I would put in reverse and the car would die out after 10 feet in reverse and the "Pull Key, Wait 10 sec". After waiting 10 sec, it is fine. Any suggestions on what to do? Thanks!
01-02-2003, 01:12 AM
#6
TECH Senior Member
Re: Car Dies in Reverse Not sure about that pull key wait 10 seconds thing but...
"I was told drilling a hole in the TB was for the MN6 cars and A4s do not need to if the cam is not that agressive."
Actually, the A4s tend to need drilling a larger hole in the TB blade MORE than the M6s.
I wonder if your problem is related to the column lock bypass. Doesn't sound like it sine it's not a sudden off situation...it does skip and sputter.
If you have access to a diagnostic scanner find out what you IAC pintel position counts are. They may be to high with that idle raised to 900. Drilling the TB blade hole bigger can fix this. You want to get the IAC counts down to about 30 with the engine fully warmed but no lower.
"I was told drilling a hole in the TB was for the MN6 cars and A4s do not need to if the cam is not that agressive."
Actually, the A4s tend to need drilling a larger hole in the TB blade MORE than the M6s.
I wonder if your problem is related to the column lock bypass. Doesn't sound like it sine it's not a sudden off situation...it does skip and sputter.
If you have access to a diagnostic scanner find out what you IAC pintel position counts are. They may be to high with that idle raised to 900. Drilling the TB blade hole bigger can fix this. You want to get the IAC counts down to about 30 with the engine fully warmed but no lower.
01-02-2003, 08:09 AM
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Re: Car Dies in Reverse </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Colonel:
<strong> Not sure about that pull key wait 10 seconds thing but...
"I was told drilling a hole in the TB was for the MN6 cars and A4s do not need to if the cam is not that agressive."
Actually, the A4s tend to need drilling a larger hole in the TB blade MORE than the M6s.
I wonder if your problem is related to the column lock bypass. Doesn't sound like it sine it's not a sudden off situation...it does skip and sputter.
If you have access to a diagnostic scanner find out what you IAC pintel position counts are. They may be to high with that idle raised to 900. Drilling the TB blade hole bigger can fix this. You want to get the IAC counts down to about 30 with the engine fully warmed but no lower. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks for the info. The "Pull Key, Wait 10 Sec" is displayed on the DIC (C5). I should first check to see if it is pulling any codes from the DIC. I'll see what codes if any comes up.
<strong> Not sure about that pull key wait 10 seconds thing but...
"I was told drilling a hole in the TB was for the MN6 cars and A4s do not need to if the cam is not that agressive."
Actually, the A4s tend to need drilling a larger hole in the TB blade MORE than the M6s.
I wonder if your problem is related to the column lock bypass. Doesn't sound like it sine it's not a sudden off situation...it does skip and sputter.
If you have access to a diagnostic scanner find out what you IAC pintel position counts are. They may be to high with that idle raised to 900. Drilling the TB blade hole bigger can fix this. You want to get the IAC counts down to about 30 with the engine fully warmed but no lower. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks for the info. The "Pull Key, Wait 10 Sec" is displayed on the DIC (C5). I should first check to see if it is pulling any codes from the DIC. I'll see what codes if any comes up.
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01-02-2003, 10:42 AM
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Re: Car Dies in Reverse Is it when you hit the breaks in reverse?
If so then maybe the throttlebody is not letting enough air in when you hit the breaks to keep it running due to the increase in vacume caused by the booster, Just a thought. Drilling the throtlebody has fixed that on quite a few cars I have worked with. If you go that route just do SMALL adjustments at a time and drive it for a halfday to a day before increasing the hole again.
Good Luck
If so then maybe the throttlebody is not letting enough air in when you hit the breaks to keep it running due to the increase in vacume caused by the booster, Just a thought. Drilling the throtlebody has fixed that on quite a few cars I have worked with. If you go that route just do SMALL adjustments at a time and drive it for a halfday to a day before increasing the hole again.
Good Luck
01-02-2003, 10:18 PM
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Re: Car Dies in Reverse Thanks for the info. I will have to consult with my tuner again regarding drilling a hole in the TB. As for as dying while in reverse, I do have the brakes engaged but not all the way when it dies. For instance, start the car, put in reverse while enganging the brakes all the way and then letting off the brakes (not all the way) slowely and then it dies.
