WHATS HAPPING!
08-29-2001 | 05:56 PM
#1
Thread Starter
Junior Member
Joined: May 2001
Posts: 45
Likes: 0
From: Evanston, Wyoming
WHATS HAPPING!
I got a code 21 the other day(tps voltage high) and after that happened my car has been running like crap. Its a 91 Z-28 305 TPI. If I start it in the morning its fine, but when I leave work and go to lunch it idles bad and sometimes dies. When I Start it to leave work everything seems fine for the rest of the day. Could it be my tps is bad. Any suggestions would be great.
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1991 Camaro Z-28 305ci 230hp
1985 Camaro Coupe 331ci 300hp
http://www.geocities.com/speedstar38...Speedstar.html
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1991 Camaro Z-28 305ci 230hp
1985 Camaro Coupe 331ci 300hp
http://www.geocities.com/speedstar38...Speedstar.html
08-29-2001 | 06:23 PM
#2
Supreme Member
Joined: Aug 2001
Posts: 2,136
Likes: 1
From: Costal Alabama
Car: 1989 Iroc-Z
Engine: 350, ZZ4 equivalent
Transmission: Pro-Built Road Race 700R4
Axle/Gears: 3.23 Dana 44
A code 21 means your throttle position sensor is reading to high voltage. You need to recalibrate your TPS sensor if that doesn't fix it you will need to buy a new one.
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1989 Iroc-Z Blue T-Tops
Lightly Moded:
Headers, Rebuilt B&M 700R-4 tranny, Airfoil, K&N's
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1989 Iroc-Z Blue T-Tops
Lightly Moded:
Headers, Rebuilt B&M 700R-4 tranny, Airfoil, K&N's
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