LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

94 Z28 Stalled

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Old Apr 22, 2020 | 10:10 AM
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Dawn82399's Avatar
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94 Z28 Stalled

I just bought a 94 Z28 LT1. She has an attitude. She will run across town but stalls trying to get her home. Sometimes she don't last as long as other days. I'm not sure where to even start. Have not had an issue like this one. I
I need to say I just bought this car so I don't know a whole lot about it yet either
Old Apr 22, 2020 | 10:33 AM
  #2  
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From: Hell was full so they sent me to NJ
Re: 94 Z28 Stalled

Have you scanned it for codes? Have you checked the fuel pressure?

Manual or auto trans?

Does is restart easily after it stalls, or do you have to let it sit for a while?

Sounds like it might be a heat soak issue. Could be caused by the ignition control module (ICM), the optical cam position module in the Optispark distributor (ICM and Opti can set codes that do not turn on SES light), or even the fuel pump.
Old Apr 22, 2020 | 10:48 AM
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Re: 94 Z28 Stalled

Originally Posted by Injuneer
Have you scanned it for codes? Have you checked the fuel pressure?

Manual or auto trans?

Does is restart easily after it stalls, or do you have to let it sit for a while?

Sounds like it might be a heat soak issue. Could be caused by the ignition control module (ICM), the optical cam position module in the Optispark distributor (ICM and Opti can set codes that do not turn on SES light), or even the fuel pump.
Sometimes it starts back up easily sometimes she don't. I have tried to have the codes scanned but everywhere I go says it's to old to scan.
It's an automatic.
How do I scan codes
Old Apr 22, 2020 | 12:04 PM
  #4  
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From: Hell was full so they sent me to NJ
Re: 94 Z28 Stalled

You need an OBD-1 scanner. Many of the auto parts shops don't have them, but they are available used on ebay. AutoXray made one. Snap-On made them. There are also dual OBD-1/OBD-2 scanners available. Actron makes good ones. A good alternative is downloading (free) Scan9495, a program designed specifically for the 1993-1995 LT1. You need a laptop and a low-cost cable. Program can read codes, record real-time PCM data, and produce data logs that we can help you interpret.

https://www.camaroz28.com/forums/com...95-lt1-874306/
Old May 7, 2020 | 05:28 AM
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From: MileHighCity
Re: 94 Z28 Stalled

i ran into the same problem finding a scanner.. then i found "BOSCH OBD1 1300" it's an OBD1 and OBD2 scanner from O'reilly Auto Parts..
i think it was around 270..
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