cruiser54

Wimpy.

badluck

I did the decorbonizing and pulled the water temp sensor and both did nothing except set off a check engine light.The lambda also shows its running lean.Why do people install voltge adjusters to the map sensor?

Crazy 8s

How were you able to discern that the NOx emissions were not improved?

badluck

Had it smogged every time I made a change,about 20 times.

Crazy 8s

On a Sunday? I thought civil servants weren't allowed to work on Sunday else they spontaneously combust.

Programbo

http://www.angelfire.com/my/fan/MAP_adjuster.html

badluck

The map adjuster is what I'm looking at but I am wondering if the pcm will keep compensating and lean it out?Therefore rendering the adjuster useless.Or will it fool the o2 sensor and pcm and richen it up?If the o2 sensor is reading a lean signal, telling the pcm to lean out ,is it possible it is trying to get more fuel or is the o2 sensor going to compensate for the adjusted fuel and tell the pcm to lean out?

cruiser54

See Post 21, and look at this site:
www.strokedjeep.com

badluck

Dino said the adjustable map sensor will only work in open loop. Maybe bigger injectors?

Programbo

Maybe. I had injectors that came out of a state police cruiser in my XJ when I went for the emissions test and my reading was to rich

DFlintstone

adjustable map

http://go.jeep-xj.info/HowtoMAPsensor.htm

badluck

sounds like the adjustable map sensor will only work in open loop.I need to richen it up according to the lambda calc. it came up with 1.046 = to lean = high nox. How can you richen it up?

DFlintstone

You have good help, I just put yhr link in because of the thread title. Nothing needs to be "different", if the rest is right.