I have a problem it will start an idle but when I give it gas it will die. I have change plugs an wires new dist. ign. coil
May 2, 2015 at 8:42 AM
1991 Chevrolet Other engine
1991 CHEVROLET
JENNJENN34
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- 1 POST
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CARADIODOC
- ✓ASE Certified Mechanic
- 34,321 POSTS
First check if there's any diagnostic fault codes. Here's how:
https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method
Next, check the fresh air hose between the mass air flow sensor and throttle body. There can't be any leaks in that hose. The next step requires a scanner so you can view live data. That will allow you to see what the Engine Computer is seeing. and you may be able to identify a sensor reading that is incorrect but not bad enough to set a fault code.
https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method
Next, check the fresh air hose between the mass air flow sensor and throttle body. There can't be any leaks in that hose. The next step requires a scanner so you can view live data. That will allow you to see what the Engine Computer is seeing. and you may be able to identify a sensor reading that is incorrect but not bad enough to set a fault code.
May 2, 2015 at 10:40 PM
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