4.0 running to rich. - JeepForum.com

 
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post #1 of 5 Old 07-27-2004, 05:43 PM Thread Starter
ptipton
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4.0 running to rich.

I have changed the map, cts, iat and o2 sensors and it is still running very rich, any more suggestions would be helpful.

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post #2 of 5 Old 07-28-2004, 05:38 PM
balloo93
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I am assuming you have a 96+ XJ. Take it in to AutoZone or hook up a scanner and see if any codes com eup. Also clear any that are on there after documenting them and see if they return.

Double check the connection on the MAP, and what brand O2 did you use. There have been several guys here that have bought the bosch and have had to return them. Most get Dealer stock replacements and have had better luck with them.

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post #3 of 5 Old 07-28-2004, 08:20 PM
mans
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Quote:
Originally Posted by ptipton
I have changed the map, cts, iat and o2 sensors and it is still running very rich, any more suggestions would be helpful.
What's a CTS and IAT?

-- mans --

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post #4 of 5 Old 07-28-2004, 08:27 PM
balloo93
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Quote:
Originally Posted by mans
What's a CTS and IAT?

I assumed he meant cPs and iaC.

Of course you know what happens when you assume!!!!!!!!!!!!!!

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post #5 of 5 Old 07-28-2004, 08:28 PM
98XJVT
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IAT = intake air temp, cts = coolant temp sens

98 XJ 4.0L I6
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