So today i was driving along and all the sudden the engine cut out. I started it back up and then it ran fine. But the SES light was on. Then it went off for a while and then came back on later. I pulled codes 21, 22, and 33. What the heck? What do you think the problem is? I have pulled codes 21 andd 22 before, however never at the same time and now 33 is there too. I have replaced the ECM and MAF about 2 years ago and have not done any recent modifications. Any ideas? thanks in advance.

 

I would guess, and this is only a guess, that the code 33 is from the expected voltage based on the TPS voltage.

Sounds like the TPS is going south on you.

 

So the MAF depends on the TPS? also, I replaced the TPS about 1.5 years ago with a Wells one. Are Wells any good?

 

Well, I'm over my head on the specifics. Perhaps someone familiar with the PROM code could chime in.

But, since you've gotten both high and low TPS voltage codes, that sounds pretty suspecious.

 

Reset, drive and then pull 'em again. See if you get them all again or only some.

 

Ok so i reset the codes and then drove the car for about 25 miles before the SES light came back on. I pulled the codes and now just 22 and 33 are coming up. Some one please help!

 

Measure the TPS output voltage with the throttle closed. If the throttyle stop screw has been adjusted, you may need to reset the minimu air position of the throttle. Search for the procedure - It's been posted about a hundred times, at least.

Then set the TPS output voltage to within the specifiecd range (AFTER you set the minimum air position).

Finally, place a short whip, piece of heavy electrical cable, or tire checker/billy club on the floor of your rear seat area. Take a good swipe at anyone that tries to screw with you throttle stop adfjustment again.

 

The Min. air is adjusted properly and the TPS voltage was correct when i checked it like a week ago.

 

The TPS code was coming up when i checked it too. But now code 33 comes up at the same time.

 

isnt there second meanings to these codes. Like 22 also means the fuel relay circuit is open or not grounded.

 

I have never heard that before. Anyone else?