Hey guys, my car just recently started showing my check engine soon light. It isn't every time I start it but every now and then. I had a friend of mine put it on a machine and he said it was a code 36 which is telling me its either the MAF sensor burn-off relay, MAF sensor or defective ECM. I put my stock chip back in.... same problem. So I'm going to try a new MAF sensor and see if that is the problem. Does anyone know of a performance sensor for the TPI? I have found one at corvetteforum for $159 and another one at another site for $299. Is there a difference between the corvette MAF sensor and the camaro MAF sensor?

 

Yes, the WELLS SU-145 which is probably the $159 MAF you have been told about already.

 

No such item "as a Performance Maf sensor" for a 3rd gen TPI. If you need a new one your best option as stated, would be the WELLS SU-145 at $159. But I would replace the two sensors on the firewall first, they are about $15 each and go from there if the problem still exists.

 

Which two sensors on the firewall?

 

Ok, I don't get this. My light has recently been off but still comes on every now and then. It only comes on at start-up and when it comes on it doesn't go off and if it doesn't appear within the first 10 seconds of start-up then it doesn't appear at all. The car still eats gas a lot more than usuall, however, and still has less power.

 

Whoa, whoa, whoa!!!...hang on with that new MAF! Check out this thread that I seem to have taken over from Fruity One. (sorry man) Vader has been helping me out with the same problem I have in my '89 IROC, and it wasn't the sensor. In fact..it doesn't seem to be the relays either. I'm still working on it.

Check it out: https://www.thirdgen.org/techbb2/sho...hreadid=184988

As I'm sure you can see, Vader knows what he's talking about. I hope that helps you out.

Almost forgot...in case you didn't already know the code 36 may not be the MAF burnoff. It could also be:

Problem in transmission shift OR
Fault in direct ignition system OR
Missing pulses in electronic spark timing signal

Don't worry...I've just recently become educated on the subject as well.

 

Wow, I don't know how to do any of that stuff. I have a voltage meter but don't know what u mean when you check the A and D wires. This sucks, I don't know what to do and don't have the cash to take it to an auto repair shop.

 

It means you check pins A & D on the connector.
Don't take it to a "repair shop" they will in all proability just check the ECM codes and replace the MAF or relays. There are (IMHO) NO competent shops out there for troubleshooting. Troubleshooting takes a long time, a through knowledge of the system you are working on and lots of paitents. They can make more money if they just replace a high dollar part, charge you a couple hours labor and send you on your way, fixed or not.

Learn your car and its systems, you'll get a lot more out of it in the long run. A digital meter costs between $20 to $300 depending on what you get. I would suggest a good mid-range priced meter from somewhere like Raido Shack (yeah, yeah hear it all before) A Fluke (tm) meter would be ideal but they are in the $300 + range and are overkill for the average do-it-yourselfer.

 

Well it's the closest thing and does flow more than stock.

 

Your reply is not very clear. If you mean the WELLS SU-145, then yes it does Flow more air then a stock Maf.