When IAT hits 100*, car basically shuts off
04-09-2008, 03:47 PM
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When IAT hits 100*, car basically shuts off Car runs nicely until the IAT get to 100*, instantly it starts idleing crazy/stubling/surging and will shut off. and only way to keep it running is to hold the gas down some. it wont even start without holding the gas down some at 100*+.
H/C/headers/lid-IAT in stock location
Logs show when it hits 100*s then the MAP starts jumping up and eventually get to 100kPa, timing seems to stay as it should.
Suggestions?
H/C/headers/lid-IAT in stock location
Logs show when it hits 100*s then the MAP starts jumping up and eventually get to 100kPa, timing seems to stay as it should.
Suggestions?
04-09-2008, 08:51 PM
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As it was put to me. Unmetered airflow. I have a similar thing, when the motor has been running for an hour or so and everything is nice and hot I get a map spike and run real lean. Something is expanding and causing a small vacumm leak. 100 kpa is likely your baro pressure, so you have a big leak. Thats would be my guess anyway. good luck.