High idle/missing issue HELP!!!
Thread Starter
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Posting Guru
Joined: Jul 2003
Posts: 2,454
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From: Adams TN
High idle/missing issue HELP!!!
i have a friend who has a 93 F250. i am not an EFI guy at all either carb or diesel and i can work on it without a brain.
he pressure washed the engine(after i told him not to) and now it is idling high, missing, has poor acceleration and sometimes cuts out at idle but fires rightr back up.
when i unplugged the air bypass on the throttle body it idles down but still runs like crap.
he cleaned the cap out and sprayed wd 40 in it.
i looked at it all day yesturday and have no clue about this efi crap
does anyone have an idea??? we had codes pulled and being OBD-I it showed nothing. the ignition module was tested good.
anyone???
he pressure washed the engine(after i told him not to) and now it is idling high, missing, has poor acceleration and sometimes cuts out at idle but fires rightr back up.
when i unplugged the air bypass on the throttle body it idles down but still runs like crap.
he cleaned the cap out and sprayed wd 40 in it.
i looked at it all day yesturday and have no clue about this efi crap
does anyone have an idea??? we had codes pulled and being OBD-I it showed nothing. the ignition module was tested good.
anyone???
Senior User
Joined: Dec 2002
Posts: 143
Likes: 0
From: Greenville PA
Did he cover his Dist? How's about his computer on the firewall under the driverside kickpanel? Sounds like he got water in everywhere, IAT sensor,why would you spray WD 40 into a Cap? Water most likely got into the spark plug openings, best bet, drive it, and dry it out, I have had problems with that and after some driving it works it self out. Oh yea, don't be so narrow minded about EFI, its like anything else, do a little research and you might just learn something, Think of all the time you have spent, with that Carb Crap! 
Good luck.
Good luck.
Thread Starter
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Posting Guru
Joined: Jul 2003
Posts: 2,454
Likes: 1
From: Adams TN
haha newbie!!!! i guess you are right. its too bad to drive
i told him to clean the computer connections.
idk why he sprayed wd-40 in there i figured to displace the water or something
guess i have efi learning to do
thanks
DT
i told him to clean the computer connections.
idk why he sprayed wd-40 in there i figured to displace the water or something
guess i have efi learning to do
thanks
DT
