I will try and get the codes they pulled. He said there were 14 of them. The last time they had they changed the fuel pump, fuel regulator, i cant exactly remember the other thing but it had something to do with the crank shaft?

I always feel these guys are trying to pull one over on me. I will update on the codes tomorrow evening.
Appreciate all the help!

 

14 DTC's??? Holy crap! Something stupid going on if that's the case.

Crankshaft position sensor??? If that's what they replaced, they need to do a crankshaft position sensor relearn before the engine will run correctly. Ya can't just replace it and call it good.

 

Ok so here goes...
P0102, P0131, P0134, P0143, P0151, P0155, P0171, P0300, P0463, P1345

This is all they gave me. Beside the O2 sensor codes he wrote "Who Cares" !!! Well since my vehicle is running like crap.... I kinda do!!

Now i do understand that the O2 sensors are probably related to the MAF problem. So my next goal is to change the MAF and the TPS. With the way its acting and the symptoms I read of a malfunctioning TPS... IT fits 75% of the issues I'm having. I asked him if he could check it. He said there was no way to check it. They change it hope that's it... Sigh

I asked them for specifics on what they changed last time.
Fuel pressure regulator, crank shaft position sensor, crank shaft pigtail, and finally the fuel pump.
Before they figured out it was the fuel pump they said "It only starts every time if it has a constant 14.2 amps" That was the reason they changed the crank shaft stuff. It took them another 2.5 weeks to figure out it was the fuel pump!

So what are your thoughts on the above?

 

6 of the 9 DTC's are oxygen sensor problems! And he says Who cares???? You gotta be kidding!

Save your money on the TPS. there are no TPS codes and no reason to replace it. As for the MAF sensor, hold off on that as well, until things can be checked out.

Are you "comfortable" getting your hands a little dirty and check some things? Voltage, resistance, fuel pressure etc. Nothing difficult, just a few tests with some tools and some guidance on how to use them. Some of the auto parts stores rent/sell/loan the equipment necessary to do the tests.

 

Wow, sounds like a real piece of work mechanic.

 

Yea, well, it takes all kinds.

99% of the time when troubleshooting DTC's, you start with the first one, in this case a MAF sensor circuit problem, not necessarily a bad MAF sensor. Sometimes you can't always "go by the book" though. Sometimes you need to use a little common sense, which unfortunately, isn't so common any more. The MAF can cause screwy oxygen readings. BUT, the PCM uses oxygen sensor readings, and screwy oxygen sensor readings can cause the PCM to falsely set MAF faults. MAF sensors typically will set more than one DTC if there's a problem with the sensor itself, only one MAF DTC was retrieved, and SIX oxygen sensor DTC's. This might be the one per cent, I'd check oxygen sensor operation first on this one Might be a blown oxygen sensor fuse or a bad sensor ground.

 

Wow, 14 codes. Doesnt beat the record i've seen was an 02 saturn v6, friend wanted me to fixed it and i ran after i pulled the codes. There were 32, not a joke... anyway the PCM can store codes from the past. I would have cleared the codes and see which ones come back. NEVER start replacing something just casue the scanner says MAP sensor. If it truly has 14 codes after a reset then there is a common problem, probably with a circuit or the PCM. But without knowing the codes idk.