Troubleshooting Diagnosing problems done here.

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post #1 of 3 (permalink) Old Mar 18th, 03, 06:41 PM Thread Starter
Join Date: Mar 2003
Location: gadsden al
Posts: 7

I have an 89 camaro that I have not been able to drive for the past two weeks. I was driving and it suddenly went dead. I tried to crank it several times it would start and then go dead. We got it to crank and run but it had no power. I sprayed carb cleaner around the back passenger side. I thaught at first the TBI gasket. Changed it. Then Intake, changed it. I think the intake was part of the problem but now it idles a few seconds and goes dead. We spray the carb cleaner in the same spot as when we did for TBI and for the intake, which happens to be where the EGR is and it idles up. does this sound like EGR, and should I replace it or close the port off.
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post #2 of 3 (permalink) Old Mar 19th, 03, 02:59 PM
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Join Date: Mar 2002
Location: Austin, TX, USA
Posts: 5,277

EGR doesn't really rob you of performance power. It can actually be a very good thing. Many people install a block-off plug under the EGR, but I don't really see the benefit for a street car. Also with emission laws and such, I'd say fix the leak and restore the EGR as it was.


68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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post #3 of 3 (permalink) Old Mar 21st, 03, 04:23 PM
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Join Date: Dec 2001
Location: ocala, FL
Posts: 210

ok, at idle, the EGR stays closed. The map sensor is what senses engine load and sends the signal to the EGR control solenoid to open the valve. the valve is open under ported vaccum and allows exhaust back into the intake. if you sprayed carb cleaner around it and it idled up, then i'd either guess that your motor was running lean to begin with because of a bad EGR gasket or the rubber seal on the valve itself has a hole in it and the carb cleaner got through there and back into the motor and made it idle up. just a guess though. [img]smile.gif[/img]
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