1999 Acura TL

FREDAFACCA

MEMBER
1999 ACURA TL
6 CYL
FWD
AUTOMATIC
374,000 MILES

Hot engine stalling. When the engine is at running temperature and is turned off, if I leave it for 5-10 minutes I have a hard time starting it again. It wants to stall and I have to rev up the engine for 20-30 seconds so that I can put in gear without stalling. The problem is intermittent. Cold weather starts are OK. Sometimes the engine revs up for no reason for a short period of time. This problem started before I cleaned the exhaust manifold runners. The runners were plugged but have been thoroughly cleaned.
On a separate issue, sometimes when it is very hot outside the air conditioning will not come on or come on for a short period of time. When the temperature is cooler there seems to be no problem.

5 Replies

2CARPRO JACK

MECHANIC
11,533 POSTS

Sounds like the a/c may have too much in it. Pressures go up with higher temps, this can cause the high side pressure switch to shut the compressor off. You cleaned out the exhaust manifold runners? I have never heard of that before. If you did the intake runners, check for a vacuum leak by spraying carb cleaner around the intake area while idling, if engine changes you have sprayed a leak

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Wednesday, February 10th, 2010 AT 5:01 PM

FREDAFACCA

MEMBER
6 POSTS

I'm sorry it was the intake manifold and runners that I cleaned. This problem started before I cleaned the runners but I'll check for leaks.
As far as the air conditioning it runs great 95% of the time, it's only when the outside temperature gets to 30 degrees Celsius or higher that it kicks out.

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Thursday, February 11th, 2010 AT 12:15 PM

2CARPRO JACK

MECHANIC
11,533 POSTS

A/c might need to be serviced so the pressures can be checked and also verify the cooling fan is operating correctly. If that engine has a fuel pressure regulator on the fuel rail, see if any fuel is present in the vacuum line, if so the reg is popped and will need to be replaced

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Thursday, February 11th, 2010 AT 3:27 PM

FREDAFACCA

MEMBER
6 POSTS

Further to your reply I had the Acura put on an engine analyzer and no codes were indicated. I also had the garage do a smoke test and no vacuum leaks were found. Since then the car stalled again once. It eas driven for about 45 minutes and the shut off for about 20 minutes and stalled when I tried to start it. After reving it up it was OK. Do you have any other suggestions?

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Sunday, February 21st, 2010 AT 4:00 PM

2CARPRO JACK