Code 32 ....now a 33

[89blkvet]

First i was getting a code 32 (egr), so I chabged the EGR valve and the EGR switch. Not only am I still getting the code 32, now I am getting the code 33 (Mass air flow). Is my car possesed or do i have a serious problem.. The MAF seems to be fine, I pulled it off and inspected, nothing is damaged inside and yes, the screens are still on. I changed one of the MAF relays, the power one. what do i do????

 

[DkBG]

My memory isn't what it used to be but I'm thinking when I got those codes on my old C-4 , it was the O2 sensor . Cliff

 

[89blkvet]

Is there a way that I can check the 02 sensor??

 

[Magmotor]

Hate to tell ya this but it sounds like the ECM. All the Troubleshooting flow charts that I have lead to it. Especially since you replaced the EGR components and it's still throwing the code. Can you find a known good ECM and just check it too see if it's the problem?

I have the flow chart for the code 33 if you would like. It's too big for this forumn so I need a pvt e-mail.

 

[HPG]

Code 33 in my book for an 88 says MAF Sensor Circuit. Code 34 is for the MAF sensor. I just had a code 34 and replaced the MAF power relay and the burn off relay. They are on the firewall behind the battery. Worth a try. Since I replace them, the check engine light has not come on. New MAF is over $330 wholesale. Both relays at mechanics price were only $17 for both. Hope it's not the MCM, That's expensive, I replaced mine last year.

 

[TALMADGE 1]

I just had a code 34 and replaced the MAF power relay and the burn off relay.

I agree, my 88 did the same thing. replaced both relays, under the battery and solved my problem. total parts were less than 20 bucks, got them from auto zone.

 

[scorp508]

Agreed. If you've never replaced the MAF relays I would do that as well. Its good for peace of mind and just may save ya!