12-07-2011, 08:40 PM
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AF Fanatic
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Join Date: Oct 2007
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Re: 91 floods out
Quote:
Originally Posted by crazy4jd318
My old plow truck is giving me fits, it idles great, put it in gear it floods out, put in park or neutral rev up and it clears back out, the temp sensor reads 85 degrees c on my scanner, has code 33, but i attribute that to flooding out causing erratic rpm, it lopes, I have replaced the spark plugs, wire cap and rotor, o2 sensor and map sensor, flushed and filled cooling system,I was advised a dirty cooling system can cause residule voltage, I also have switched throttle bodies and checked the fuel pressure and it is in specs, any thoughts on what I am missing? Also when put in reverse or drive it will run fine, but as soon as you crack the throttle it starts flooding out, the MAP sensor voltage at idle is 1.08 and the kpp is 31 and when it is flooding out it is 3.94 volts and 83 kpp
any insight would be great
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you think the intake manifold has a crack. exhaust gas is getting into the engine intake .
at idle the MAP a little over 1 volt is good , 4 volts is WOT or very low vacuum....
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