Check engine light/not MAF - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

 
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post #1 of 4 (permalink) Old Apr 23rd, 01, 10:29 AM Thread Starter
 
Join Date: Apr 2001
Location: California
Posts: 1
Angry

Lately my Camaro has been so annoying! Its an 85 and its a 2.8 multiport, fuel injected. The problem is the check engine light stays on, a lot of the time if the engine light isnt on, the car runs worse. But it hestitates and misses a lot. We replaced the fuel filter..we checked the codes and it said it was the MAF sensor..so we changed it and no luck, it didnt work. So now we're stuck, we have no idea what else it could be. Can anyone help?
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post #2 of 4 (permalink) Old Apr 23rd, 01, 01:23 PM
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Join Date: Mar 2001
Location: slaughters ky 42456
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Possibly a vacume problem,Monitor your pids if you have a scanner, the MAF voltage should be within 0.5 volts of the throttle position at idle,if its very low most likely a vacume problem.Check all hoses around intake air inlets pcv lines etc,have seen a few 4.3s with intake leak.

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69 Camaro SS 350 4 speed
55 Belair Sedan Pro Street 355 auto 9''
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post #3 of 4 (permalink) Old Apr 23rd, 01, 02:23 PM
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Bill
 
Join Date: Aug 1998
Location: Waldorf Md. USA
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Frog,
There is no such thing as a code that says the MAF sensor is bad. The code indicates that the MAF sensor is giving an incorrect reading for the conditions, but does not mean that the sensor is bad. There are a bunch of things that can cause the MAF sensor to read incorrectly, the only way to find out what is doing it is to have a good scanner such as the SnapOn MT2500 that allows you to look at all the inputs and outputs that the sensor sees, while driving the vehicle. As much as it goes against the hot rod way of doing things, I think you will be ahead of the game, moeny wise, by having a shop with the proper equipment diagnose and repair the problem. You can throw parts at it until you are broke and still not fix it.
Hope this helps,

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Bill Koustenis
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1971 Chevelle "Heavy Chevy" original owner
1973 Z-28 ..one family car...Brother bought it new in 73
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post #4 of 4 (permalink) Old Apr 24th, 01, 01:48 PM
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Join Date: Mar 2001
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I agree with Bill. If its not a obvious problem that you can pinpoint,or if you don,t have a scanner take it to a good garage.

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69 Camaro SS 350 4 speed
55 Belair Sedan Pro Street 355 auto 9''
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