adjustable map sensor ?
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?
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From: Baltimore, Maryland
Year: 1994 1993
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Engine: 4.0
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?
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From: Baltimore, Maryland
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Last edited by DFlintstone; Nov 24, 2014 at 11:07 PM.
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?
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