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My car starts hard sputters and dies

Tiny
BYRDY101
  • MEMBER
  • 1998 PONTIAC GRAND AM
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 123,000 MILES
I have a 1998 Pontiac grand am se, 2.4L twin overhead cam automatic. I have a big problem I just did a tune up, spark plugs, spark plug boots, and oil change, air filter and fixed a few vacuum lines, car passed smog with zero emissions and is now completely registered, after all of this I noticed a rough start up but the car ran fine and would sputter sometimes while driving around 50-60 mph, then when I start up sometimes it would idle rough then level out just below 1000 rpm, just about two hours ago I was parked in front of a friends house and the car just died, tried to start back up but the engine and idle were really rough and then it died again and it did this about 4 or 5 more times before a check engine light came on and started blinking and I scanned the check engine light and it is a P0300, random misfire on all cylinders. Now when the engine is started up and gas is applied the car chokes out and dies
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Thursday, March 27th, 2014 AT 12:38 AM

6 Replies

Tiny
KNOWLEDGE IS POWER
  • MECHANIC
  • 1,136 POSTS
A plugged fuel filter can cause this as well as an ignition control module. It sounds like a big deal but it's not. It's the flat part under the coil packs
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Thursday, March 27th, 2014 AT 4:53 AM
Tiny
BYRDY101
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  • 6 POSTS
Hanks so musch I was reading the symptoms of that last night and was gonna try changing the ignition coil first but I think im just gonna hit the icm
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Thursday, March 27th, 2014 AT 11:56 AM
Tiny
KNOWLEDGE IS POWER
  • MECHANIC
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Remove all the packs from the icm and look for corrosion on the prongs. You can try cleaning them first
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Thursday, March 27th, 2014 AT 12:36 PM
Tiny
BYRDY101
  • MEMBER
  • 6 POSTS
Ok so I changed the icm, it started a few times but ran really rough, also changed one of the ignition coils, still runs really hard im at a loss I just have no more money to put in to it. Please help

now my starter is gone to crap
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Tuesday, April 1st, 2014 AT 10:49 PM
Tiny
BYRDY101
  • MEMBER
  • 6 POSTS
Ok so now we got a new starter and new icm and coil housing and now the engine cranks but no turnover like its not getting a spark
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Wednesday, April 2nd, 2014 AT 2:54 PM
Tiny
KNOWLEDGE IS POWER
  • MECHANIC
  • 1,136 POSTS
Check the plug on the ICM and make sure that it's plugged in tightly also check the wires coming out of the ICM plug to make sure there are no breaks or frays in the wiring. Also if you have a test light or a meter check for power at that plug.
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Wednesday, April 2nd, 2014 AT 3:24 PM

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