'88 f150 won't start
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'88 f150 won't start - 3/21/2007 10:16:07 PM
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josefprem
Posts: 2
Score: 0
Joined: 3/21/2007
Status: offline
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Auto tran, 5.0L engine.
First it ran rough, then quit. Then ran again, quit when put into drive. Changed Air and fuel filter, got a code 31/32 from the OBD II sys. EGR Valve looks to be in great shape, EVP sensor (the sensor that sits on the valve) tested 5Vorange wire and .205 volts to the brn/grn wire (so good power and chiltons said if I get less than .67 V to the other one the senson should be good.) EGR valve wouldn't completely keep the truck from starting would it?
The in line fuel pump is less than a year old. Problem the same regardless of which fuel tank I select. I still think it might be a fuel issue since I have never had ignition problems, and no matter how often I have turned it over I smell no gas.
What would be the best way to troubleshoot the fuel? The pumps ... are they supposed to be on all the time even when the engine is not running? (If it was carburated I could spray some starter fluid...)
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Joe
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RE: '88 f150 won't start - 3/21/2007 10:23:21 PM
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rebelranger01
Posts: 14
Score: 0
Joined: 2/7/2007
Status: offline
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the pumps just kick on when you first turn on the key for a split second, and know egr shouldnt keep truck from starting. easy check for fuel pump is to see if the system has pressure
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