hemi_04d

OK, so this is what I got. Some of them are self explanatory. But if you guys could tell me what I need to replace that would be great...

with the key on, engine off
23
85
22
85

With the engine running
21
23
94
44
33

Joel5.0

Looks like the TPS is fubar (code 23).... code 21 KOER could have been caused by running the test with coolant temp below 170 deg.F..... suggest to clear codes and rerun the tests to confirm though.

hemi_04d

Ahh, I didn't know it had to be warm to do it. Thanks, I will redo it tommorow and see what happens

hemi_04d

What about the 94 and 44, second air injection inoperative? What is that?

Joel5.0

AIR injection or smog pump hardware codes.... is it still installed?......

hemi_04d

Nope. It has the check valve that comes off the pipes that goes into the back of the heads but that is it.

I was going to post that I went through and looked into the codes but forgot too.

Seems everything except the TPS sensor and the smog pump codes probably go back to a vacum leak or bad EGR valve.

Could that be the cause of the MAF out of range fault? I know one site I looked at said that it could be out of range because of the EGR valve being screwed.

Joel5.0

If you mean code 22 for "the MAF out of range fault"...... nope, code 22 is BP/MAP sensor, and since the system allowed you to run a KOER, it's not a hard failure code...... it may have been logged in memory at a time the engine was started with the sensor disconnected by mistake...... reason why you clear codes first, and confirm if they are real. EGR code 33 means the EGR is not active, its function is automatically deleted by the system, and shouldn't cause any driveability problems. Is your car speed density or MAF?

hemi_04d

maf, its a 93. Thanks for helping me out!!