Why does my 98 Neon SOHC with an automatic trans start to stumble on acceleration when I turn on the A/C?

It's the strangest thing. When the A/C is off, the car runs great. Even though it is underpowered, when I accelerate, it does so smoothly with no hesitation. No problems. However, when I turn on the A/C, it stumbles a lot when I accelerate, like it's misfiring. It has brand-new spark plug wires and plugs, and a new air filter. I get no check-engine light like I did when the spark plug wires went bad. It's driving me nuts. Any ideas?

Why does my 98 Neon SOHC with an automatic trans start to stumble on acceleration when I turn on the A/C?
I assume what you are describing is the sudden engine load caused by the engagement of the A/C compressor clutch . All my Neons, except my SRT-4, do that in hot weather. Even driving down the street you can feel the compressor cycling off and on. This experience could easily lead to the erroneous perception that the engine is missing. This is true on both automatics and manuals. Since I do not know how pronounced your problem is, it could be that your PCM is not adjusting the engine operation to compensate for the extra compressor load.
Reply:What kind of plugs do you have in it? Neons do not run well on platinum plugs. NGK's and Bosch supers work the best. If you still have the problem, It could be that the a/c system is overcharged. Do you have any codes?
Reply:why dont you go ask a neon forum


id start by searching in here for your problem


http://www.dodgeforum.com/forumid_121/tt...


i got you started now you gotta do the work

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