Engine stall

dread · 01-14-2010, 10:09 PM

My mustang sometimes tends to shut off when i press in the clutch and press the breaks when comming to traffic lights or in traffic but only somtimes. It also sometimes does it when in nuetral and the engine is revd. Does any one know what could be causing that.

It used to do it pretty often in the summer when ever i ran the ac but now its starting to do it without the ac or heat being on. Any input as to what it could be would be greatly appreciated. Thanks

soccerspike15 · 01-14-2010, 10:18 PM

does it misfire before it stalls?

slowgreen99 · 01-14-2010, 10:31 PM

Quote:

Originally Posted by dread

My mustang sometimes tends to shut off when i press in the clutch and press the breaks when comming to traffic lights or in traffic but only somtimes. It also sometimes does it when in nuetral and the engine is revd. Does any one know what could be causing that.

It used to do it pretty often in the summer when ever i ran the ac but now its starting to do it without the ac or heat being on. Any input as to what it could be would be greatly appreciated. Thanks

could very possibly be the tps sensor. If you need one, I think I have one somewhere around here.

dread · 01-14-2010, 10:36 PM

No it doesn't misfire and the spark plugs were changed recently

slowgreen whats a tps sensor

BAD BOB · 01-14-2010, 10:43 PM

could be a vacuum leak or maybe an ecm issue

slowgreen99 · 01-14-2010, 11:16 PM

Quote:

Originally Posted by dread

No it doesn't misfire and the spark plugs were changed recently

slowgreen whats a tps sensor

throttle position sensor

dread · 01-14-2010, 11:33 PM

Thanks guys

I'll take a look at it tomorrow after work

gearmesh, inc. · 01-15-2010, 09:43 PM

Try cleaning the throttle body throat right around where the butterfly just about seals off the opening. Take off your air bypass valve and clean it out, too.

Over time, PCV gunk can build up around where the throttle butterfly sits on its hardstop screw. This restriction to minimum idle airflow starts to give rough idle and shutting off problems when you have your A/C on (more air needed to maintain idle speed with the compressor drag).

Make sure your battery is disconnected for about 10 minutes before firing the engine back up after the cleaning regimen. This will erase any adaptive learning the PCM has done in connection with the dirty throttle body. Undetermined results may occur without resetting adaptive memory.

dread · 01-17-2010, 02:30 PM

forgive me its my on stupidity for not mentioning it, but the throttle body was changed about 1 month ago and if im correct about the placement of the tps that was also changed.

I should have said that to start with sorry also the iac was changed when i put the blower on although it is a used one and could be clogged.

The car though has been doing the same thing b4 and after the changes off and on so im going to take the iac off and try to clean it and see if that helps. thanks guys and i will keep you posted

soccerspike15 · 01-14-2010, 10:43 PM

check the throttle position sensor
idle air control valve might be built up with carbon inside which will cause the car to stall and idle low

01-14-2010, 10:09 PM	#1
dread Member Join Date: Jun 2009 Location: north charleston Posts: 37	Engine stall My mustang sometimes tends to shut off when i press in the clutch and press the breaks when comming to traffic lights or in traffic but only somtimes. It also sometimes does it when in nuetral and the engine is revd. Does any one know what could be causing that. It used to do it pretty often in the summer when ever i ran the ac but now its starting to do it without the ac or heat being on. Any input as to what it could be would be greatly appreciated. Thanks

01-14-2010, 10:18 PM	#2
soccerspike15 Senior Member Join Date: Jun 2008 Posts: 999	does it misfire before it stalls? __________________

01-14-2010, 10:36 PM	#4
dread Member Join Date: Jun 2009 Location: north charleston Posts: 37	No it doesn't misfire and the spark plugs were changed recently slowgreen whats a tps sensor Last edited by dread; 01-14-2010 at 10:38 PM.

01-14-2010, 10:43 PM	#5
BAD BOB Senior Member Join Date: Mar 2008 Location: SUMMERVILLE Posts: 3,681	could be a vacuum leak or maybe an ecm issue __________________ IM BAD BOB

01-15-2010, 09:43 PM	#8
gearmesh, inc. creepy azz cracka Join Date: Nov 2008 Location: Summerville Posts: 1,587	Try cleaning the throttle body throat right around where the butterfly just about seals off the opening. Take off your air bypass valve and clean it out, too. Over time, PCV gunk can build up around where the throttle butterfly sits on its hardstop screw. This restriction to minimum idle airflow starts to give rough idle and shutting off problems when you have your A/C on (more air needed to maintain idle speed with the compressor drag). Make sure your battery is disconnected for about 10 minutes before firing the engine back up after the cleaning regimen. This will erase any adaptive learning the PCM has done in connection with the dirty throttle body. Undetermined results may occur without resetting adaptive memory. __________________ "I came into this world kicking, screaming,and covered in someone else's blood, I have no problem leaving the same way!" ÔÇ£If you carry a gun, people will call you paranoid. ThatÔÇÖs ridiculous. If I have a gun, what in the hell do I have to be paranoid about?ÔÇØ -Clint Smith, Thunder Ranch.

01-14-2010, 11:33 PM	#7
dread Member Join Date: Jun 2009 Location: north charleston Posts: 37	Thanks guys I'll take a look at it tomorrow after work

01-17-2010, 02:30 PM	#9
dread Member Join Date: Jun 2009 Location: north charleston Posts: 37	forgive me its my on stupidity for not mentioning it, but the throttle body was changed about 1 month ago and if im correct about the placement of the tps that was also changed. I should have said that to start with sorry also the iac was changed when i put the blower on although it is a used one and could be clogged. The car though has been doing the same thing b4 and after the changes off and on so im going to take the iac off and try to clean it and see if that helps. thanks guys and i will keep you posted