Car likes dying in the cold w/ th400
10-27-2008, 05:42 PM
#1
Car likes dying in the cold w/ th400 I just got a th400 installed and the tune with the M6 was pretty solid on the car. Now whenever i start it up for the first time in the morning it'll surge a little bit until it finds idle, then ill wait a few minutes throw it in reverse and sometimes itll die in reverse when i crank the wheel.. then once i get the car straightened out sometimes itll die once i get moving in 1st gear. But the car runs great once its at op. temp. I just got HPT pro, and if anyone has any pointers to start at or where to look id appreciate it.
10-28-2008, 05:54 PM
#4
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half your problem is going to be that the PCM does not know when it will be in or out of gear.. i had the same problems with our car with a power glide in it.. what i did was crack open the throttle plate and removed the IAC and everything is perfect now. nice solid idle at 1000rpm with a 250deg cam...
10-28-2008, 06:51 PM
#6
half your problem is going to be that the PCM does not know when it will be in or out of gear.. i had the same problems with our car with a power glide in it.. what i did was crack open the throttle plate and removed the IAC and everything is perfect now. nice solid idle at 1000rpm with a 250deg cam...
no just idle airflow.
10-29-2008, 08:18 AM
#7
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Does the car have the inputs to know whether
it's in gear, A4-style? Because you do add load
and would like to add airflow, based on this.
The stock tables have P/N and in-gear lines.
But the TH400 setup may not ever select the
in-gear (let alone, one with a M6 base program).
So you may have to run with a higher than
necessary airflow in P/N and depend on the
idle RPM trim to drag it back down. Which is
better than depending on it to save you from
crashing, which it is too slow and wobbly to
do reliably. Anyway if you do have to target
it high and trim down, you may have to open
up the airflow trim limits on the negative end
to keep it from binding up and not hitting the
RPM target. But I'd save that for after you
get it to quit stalling.
it's in gear, A4-style? Because you do add load
and would like to add airflow, based on this.
The stock tables have P/N and in-gear lines.
But the TH400 setup may not ever select the
in-gear (let alone, one with a M6 base program).
So you may have to run with a higher than
necessary airflow in P/N and depend on the
idle RPM trim to drag it back down. Which is
better than depending on it to save you from
crashing, which it is too slow and wobbly to
do reliably. Anyway if you do have to target
it high and trim down, you may have to open
up the airflow trim limits on the negative end
to keep it from binding up and not hitting the
RPM target. But I'd save that for after you
get it to quit stalling.