i have a 98 rt and her latly i can be driving it and it just be fine then other times the idel sticks or it revs up to 2 grand or when u put in revers it idles real low like 500 and then trys to die whould this be the idle air contro or the throtle postion sensor and how would i go about checking each and fixing the problem

 

are you throwing a CEL?

 

no well every once and a while but i have had it read and they say it is the cattle lidik converter and talked to a couple parts shops they say it one of them 2 but i dont know how to figur out which one

 

no well every once and a while but i have had it read and they say it is the cattle lidik converter and talked to a couple parts shops they say it one of them 2 but i dont know how to figur out which one

 

that would be the o2 sensor stuff which could possibly cause idle issues and such. Which code is it? aka does it say Bank 1 or bank 2? Since you mentioned the catalytic converter I'm guessing bank 2 o2 sensor which is right after the cat.

If you get under the car and find the exhaust piping, up near the front of the car (towards the engine right where the piping begins to bend upwards), that bigger piece is the cat. and the bank 2 o2 sensor is right after that. I believe its right after the bend. It has wires come out of it and such, can't miss it.

 

If it's an o2 sensor problem that's causing the idle problem chances are it's the front one. The rear one has less effect on fuel and mixture and is used more to monitor the catalytic function. It you used a obd11 reader it will give you a code for each o2 sensor.

 

i will try changing them first cause i dont thing the sensor will be that much would the o2 sensor be in the intake manifold

 

on 95's it doesn't do anything cept monitor the cat. On the obd2 equiptment Neons (96+) though the last one does effect the mixture. Just to clarify.

Do you remember what code you were throwning?

 

All neon’s even the 95's at least in Canada are obd2 compliant.
I went through a similar issue with my 95. The obd2 reader identified not only bank 1 or 2 - o2 but also sensor or heater cct codes. These are 4 wire o2 sensor with a heater cct.

You are right there are many differences between the 95 and newer neon’s when it comes the pcm and how it handle sensors. In either case a obd2 reader should pinpoint the bad sensor.

 

yeah, the 95's are OBD2 compliant, but aren't OBD2. confusing yes but whatever lol. I don't have a rear o2 on my 95 DD and I don't get any CEL or reduction in fuel economy, but on my 97 the moment I took off the back one the CEL came on and my car ran like crap. Put it back on and it runs fine and the CEL went back off.