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Help code 33/MAP/TPI

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Old Aug 30, 2007 | 02:27 AM
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iceinespana's Avatar
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From: Spain
Car: 1991 Z28 Camaro Convertible
Engine: LB9, 5.0 TPI
Transmission: 700R4
Help code 33/MAP/TPI

I have a code that keeps re registering. The infamous *33*. Scanner reads Code 33 Map Sensor* OK to drive.
Vehicle is tuned up. Replaced EGR, MAP, EGR Selonoid, recirculation cannister, O2 sensor six months ago. No known vaccum leaks. Runs rough until you get it over 600 RPMs and then will idle for a couple of minutes and then idle rough and shut down.
After engine light has been reset. Vehicle idles and runs fine for about 2 minutes and then engine light comes on and rough idle once again and won't stay running in drive or at idle. Same code registering.
After restarting vehicle a couple of times the service engine light starts flashing rapidly and you can here a couple of relays under the hood actuating and vehicle is even harder to run.
This is on a 1991 Z28 convertible/ 305, LB9/ TPI

All input would be helpful to get my baby running right.

Thank You
iceinespana
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