99 neon

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neon99 - 13 Mar 2006 03:53 GMT

I have a 99 neon that seem to us alot of gas. I have done the normal
maintance. tune up ,change all oils and air filters. anyone have any idea
what I'm missing.thanks

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maxpower - 13 Mar 2006 10:20 GMT

> I have a 99 neon that seem to us alot of gas. I have done the normal
> maintance. tune up ,change all oils and air filters. anyone have any idea
> what I'm missing.thanks

Start with finding out what fault codes are set.

Glenn Beasley
Chrysler Tech

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neon99 - 29 Mar 2006 22:24 GMT

I had my neon checked and found no fault codes. I heard somewhere that I
might need to have my ecm reprogramed, that some of these ecm may need to
be updated for better proformance on repgrogramming them.

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hartless@hartless.com - 13 Mar 2006 15:35 GMT

Could be the O2 Sensor. My M-I-L 98 was running so rich you could smell
unburned gas out the tailpipe. The car had a complete tune-up, plugs, wires,
and coil. Also made sure the intake from air filter thru the engine was
cleaned thoroughly. I also decided to change the O2 sensor, and it fixed the
problem. I should also let you know that you should check your tire
pressures also! Low tire pressure causes lower gas mileage. And there was NO
codes that showed on the computer. I just did my S-I-Laws 98 also. Same
symptoms, lower mileage problem. Gave a major tune-up, and changed her O2
sensor. Had 88,000 miles though so it needed to be changed.

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neon99 - 27 Mar 2006 21:39 GMT

I had neon check for any fault codes. It comes up clean. no error codes.
any suggestions out there?

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