Error codes found on 87 iroc 350 tpi

IROCMIKE

MEMBER
1987 CHEVROLET CAMARO
V8
2WD
AUTOMATIC

I have codes 21, 32, 34, and 45.I recently took apart my tpi(plenumn and runners only) to clean it out from all the built up carbon then replaced the seals. Could I have done something wrong when putting it back together I mapped everything out as I took it apart and replaced everything accordingly. And checked for vaccume leaks and couldnt find anything. Any info helps

1 Reply

HMAC300

MECHANIC
48,601 POSTS

What you have is a code for the tps, try cleaning it with choke cleaner or if you took it off make sure it was reinstalled correctly. It may be sticky. Code 32 is an egr problem. If you clened theport then checkt he egr to make sure it has a good vacuum supply and the valve is not stuck open. Code 34 is amap sensor problem, make sure the gasket is in place where the sensor goes into the intake. Code 45 is an O2 sensor problem. If you got any silicone on the O2 sensor then it's no good you'll need another. But make sure all your vaccum lines are connected to the correct places, you have all the GROUNDS connected, like the ones in back of the cylinder head that many peopleforget, and all connections are in their proper place. Double check them andmake sure there are no bare wires hitting anything. Also make sure your egr isn't stuck or plugged, you can scrape the carbon out with a pick like tool. Put it back together, pull you ECM fuse for 30 seconds and reinstall it then start teh car up and seewhat codes you get then.