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Sent to March 21, 2005 7:51 p.m.

01 Pontiac Grand Prix GT, 3.8L non-turbo, Runs fine cold, runs fine hot, mid-temp runs rough, lopes, stalls or low idle speed Help?

Guests

Status: Value: $0

Answer
March 21, 2005 7:59 p.m. (8 minutes and 49 seconds later)

Any check engine light or codes?

Tech501

Reply to Tech501
Sent March 21, 2005 8:03 p.m. (3 minutes and 3 seconds later)

none

Guests -- 0 Accepts/8 Questions

Answer
March 21, 2005 8:11 p.m. (8 minutes and 0 seconds later)

Tough one, My gut says Mass air flow. Try cleaning it first. If you've got a scanner, make sure your air and coolant temp sensors are accurate. Look at the data cold before starting the engine and see if their temps match. Being that it's a 3.8, keep a leaky intake internally as a possibility. Your not losing coolant are you?

Tech501

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