Temp sensitive start
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New User
Joined: Aug 2006
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Temp sensitive start
My 87 f150 302 seems to have a remp sensitive starting problem. It will start fine when starting fluid is sprayed into the throttle body and once the engine reaches operating temp it starts fine and runs fine. When the engine has cooled it has to have starting to start it again. The engine has only 45,000 miles on it, plenty of fuel pressure at schrader vavle, pumps pumping (both). Is their a sensor that effects the temp when starting the engine, if so please advise me and any other checks I should make. Thanks for all advise.
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Joined: Oct 2004
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From: Columbia,S.C.
there is an water temp sens and air charge temp sens. which when cold tell the ecm to up the gas and turn off egr ect.ect. First go to www.fordfuelinjection.com and pull the codes it explained there. If your putting in starting fluid its not getting enough gas to start on its own. But check the codes first.
Senior User
Joined: Dec 2007
Posts: 348
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From: Lutz, FL
Originally Posted by johnc486
My 87 f150 302 seems to have a remp sensitive starting problem. It will start fine when starting fluid is sprayed into the throttle body and once the engine reaches operating temp it starts fine and runs fine. When the engine has cooled it has to have starting to start it again. The engine has only 45,000 miles on it, plenty of fuel pressure at schrader vavle, pumps pumping (both). Is their a sensor that effects the temp when starting the engine, if so please advise me and any other checks I should make. Thanks for all advise.
I don't know if yours if efi or not. Mine is efi and I had a similar problem when I bought my truck. Funny how the owner always had it running when I came to look at it. Anyways, mine had a major air leak where the air pump tube splits and goes into the two heads. I took it all apart and JB welded it back together. No more leak and it starts on the first key turn.
Rick
