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Car stalls/wont start

Tiny
CAK3383
  • MEMBER
  • 1991 CHEVROLET BERETTA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 189,000 MILES
91 beretta stalls/wont start

The problem started when I came off idle at a green light and the car stalled and didnt start for about 5-10 min got 1/4 mile and it stalled again coming off idle without starting back up again. Got it started after 20 min and made it home 10 miles w/ no problem till I stoped in my driveway and it stalled again. I replaced the o2 sensor, plugs, MAP sensor fuel filter. Tested the coil resistance all 3 are good. And 3 months ago I replaced ignition module and crankshaft position sensor for a previous problem. Now it wont start it turns over but nadda. Fuel pump relay is good and fuel pressure before starting is good (42 psi) but cant start to finish pressure test. PLZ HELP

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Sunday, December 19th, 2010 AT 8:57 PM

11 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Run an engine scan on this to see if you have something screwing up sensor wise. It may be a vacuum line to the map sensor is you have the vacuum line. Try cleaning the throttle plate on both sides with choke clear and the oblong hole where the iac draws air. If you get it running, check the fuel pressure as it should be 41-47 psi.
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Sunday, December 19th, 2010 AT 9:15 PM
Tiny
CAK3383
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  • 7 POSTS
Had oil on inside of butterfly in throttle body and some in the tube TB side. Why is there oil in there
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Sunday, December 19th, 2010 AT 9:49 PM
Tiny
HMAC300
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It's there because your engine has to breath for the pcv system to work. Oil is normal there and it makes the throttle plate sticky and causes stalling. This is a very common problem. If you clean about once a year you should be ok.
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Monday, December 20th, 2010 AT 12:12 AM
Tiny
CAK3383
  • MEMBER
  • 7 POSTS
Would the throttle plate sticking cause the car to not start though?
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Monday, December 20th, 2010 AT 4:28 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check cam and crank sensors for being to high of ohms. If you don't know how to do this i'd suggest taking it in to a repair shop. A scan should tell you alot anyhow.
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Monday, December 20th, 2010 AT 4:34 PM
Tiny
CAK3383
  • MEMBER
  • 7 POSTS
I did a scan and it came back with O2 and MAP code I replaced both and after that all I got were system normal code (12). Not sure if it has a cam sensor and the crank sensor was replaced(along with ignition module, about 3 months ago) could it have gone out again under stress?
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Monday, December 20th, 2010 AT 5:24 PM
Tiny
CAK3383
  • MEMBER
  • 7 POSTS
Ok I cleaned the plate of the TB, pulled the IAC out and it was very dirty cleaned it also and car started right of but only for about 3-4min the died while in idle and again wont start. Head ach!
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Monday, December 20th, 2010 AT 7:03 PM
Tiny
HMAC300
  • MECHANIC
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Check the fuel pressure and make sure you have gas int he car. You mighttry hitting the botom of the tank with the palm of your hand kind of hard. If the car starts it's your fuel pump.
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Monday, December 20th, 2010 AT 7:10 PM
Tiny
CAK3383
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  • 7 POSTS
Ok going to try now! What about a clogged cat. Or TPS. By the way I appreciate all of your help!
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Monday, December 20th, 2010 AT 7:19 PM
Tiny
CAK3383
  • MEMBER
  • 7 POSTS
No luck.I can hear the fuel pump and relay coming on for about 4 sec and clicking off before I turn it over
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Monday, December 20th, 2010 AT 7:23 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You'll have to take this in to a repair shop for a proper diagnosis. I can't thingk of anything other than what i've suggested. The car would stillstart with a clogged cat. And tps would set a code. If it willstart with one of the sensors unplugged then take it in as it could be a connection or anything.
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Monday, December 20th, 2010 AT 7:26 PM

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