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'91 745 Stalling - Ideas? 700

posted by  gregorythomas on  Fri Feb 1 08:48 CST 2013
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last visit: Sun Feb 16 16:14 CST 2014
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Hi Bricksters, I have gotten a great deal of help from this site for my 91 745, with 192K miles on the intermittently working clock. It is a Rex/Regina and in good shape. However I'm recently having trouble with it stalling when trying to accelerate. I have replaced the RS Relay and Crank Position Sensor. I can get it to rev up as long as I do so very gradually. If I punch it, it will stumble and stall. Happens in park and in drive. Watching the tach when it is stalling, the tach does not drop to 0 immediatley which leads me to believe ignition is OK so suspecting fuel problem. I took out the air temp sensor and the resistance was right, used a hairdryer and resistance dropped as the air temp went up, so I think that is OK. It is not throwing any codes. Starts up when cold no problem and will sit and idle no problem. I have a MAP sensor coming but feel like I am just guessing not trouble shooting. It seems like the timing is not advancing fast enough or there is not enough fuel getting in. Appreciate any suggestion you might have. Thanks Greg





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