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Discussion Starter · #1 ·
I have a 92 Deveille 4.9 it has been running rough once it warms up
now it won't start, it turnes over fine and it fires but it won't run. I can
smell a lot of raw gas. I checked the Map sensor according to the service manual, and I am not getting the 5 volt signal vaoltage at the connector
not sure if there is a open on the wire or a problem with the output from the
ECM ???????????????
 
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