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93 z28 lt1 starting and running issues
Im having a bit of a issue keeping my car running. It was running fine until recently. It would stall out and not start back up. After sitting awhile it would fire up and run for about 15 minutes then die. Ive replaced the spark plugs, alternator, check the battery. Im down to two options either the optispark or fuel pump. Any advice?
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Re: 93 z28 lt1 starting and running issues
In the course of these parts replacements, have you scanned the PCM for codes? Have you checked the fuel pressure? Have you considered the possibility of a faulty ignition control module (ICM) suffering from heat soak? When it cranks but won’t start, have you checked for spark at the plugs? |
Re: 93 z28 lt1 starting and running issues
Originally Posted by Injuneer
(Post 7001179)
In the course of these parts replacements, have you scanned the PCM for codes? Have you checked the fuel pressure? Have you considered the possibility of a faulty ignition control module (ICM) suffering from heat soak? When it cranks but won’t start, have you checked for spark at the plugs? i actually didnt take into account the ICM. I'll have to get with my friend about using his scanner or purchase one myself. |
Re: 93 z28 lt1 starting and running issues
Have the ICM tested at a parts store. Make sure they heat it up good. You don’t need a scanner for a 1993 LT1. All you need is a paper clip. http://shbox.com/1/dlc2.jpg |
Re: 93 z28 lt1 starting and running issues
Originally Posted by Injuneer
(Post 7001183)
Have the ICM tested at a parts store. Make sure they heat it up good. You don’t need a scanner for a 1993 LT1. All you need is a paper clip. http://shbox.com/1/dlc2.jpg i would have never thought of that.. learn something new everyday i guess lol |
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