I just bought a 2003 Neon SXT. Seller said he had a check engine light and the parts store told him the TPS needed to be replaced. He did that and the check engine light went out.

I drove the car about 300 miles but no problems and the check enginie light came on today and the car "stutters" at speed. It also idles very high 3,000+ RPM. Self diagnosis code shows P0068.

I'm assuming that since it ran OK after the TPS was replaced that the new TPS is good... but it's an AutoZone part so that may not be the case.

The MAP sensor is about $100. Where is it located on the Neon.

Are vaccuum leaks "common" on the Neon. If so, which lines?

 

the only vacuum leaks ive ever come accross is from someone either having a defective gas cap or didnt tighten the cap down at all. other than that, i doubt they are common.so before you go spending that 100 bucks check for vacuum leaks first. youll be able to hear them easily if you have one, especially if you have your ear at the motor. its going to be a sort of high pitch hissing sound. as for your map sensor, its going to be located somewhere on your intake manifold. if you do get the sensor at autozone, make sure those rocket scientists give you the right one.

 

i forgot to add, that if you cant find it there, look on the throttle body. its easy to identify, it will be labeled

 

Thanks. I found the MAP sensor. It's actually located on the right hand (passenger) side of the engine right under the radiator hose.

Ordered one today. We will see waht happens

 

unplug the negative battery for about 10 minutes. that should give you plenty of time to take out the sensor and put the new one in, and in the process itll wipe the codes from the computer

 

This truned out to be the tube between the throttle body and the intake manifold. Part is a deale ronly item $70.00.