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740 still have problems but making progress 700

posted by  740man on  Thu Apr 1 15:27 CST 2004
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I haven't heard this mentioned so I will chime in,

Could be your Air Mass Meter. When it dies at night try this test. Unplug the AMM.
Your computer will automatically go into "limp home mode" you will get a fixed amount of fuel to the injectors but it will be enough to get you home. If it dies at night but runs with a AMM unplugged, that that is your culprit. AMMs are temp sensitive in that they measure air mass by measuring the cooling effect of air moving over hot wires. I'm not sure how wacky they can get with a 20 degree difference in temp but who knows. It sounds like you have all the other bases covered, so it's worth a try. Sure sounds like a very likely culprit to me.

740man






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