fpr
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Freshman User
Joined: Mar 2009
Posts: 38
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fpr
i replaced the ect on my 88 with a 302.it fixed my idle problem,sorta.when the motor is cold it cranks good and idles down when it is suposed to but as soon as i hit the gas the moter races real high.then i turn off the truck then crank it back up again the it idles perfect.i believe on a previos post i was told it was the fpr adjusting to the vacumm.if so do i need to replace the fpr or do something else?
Fleet Owner
Joined: Aug 2005
Posts: 23,668
Likes: 301
From: Easton,Ks
I do not see how a FPR would cause your problem.
Sounds like too much air is getting into the intake.
Check the throttle and make sure it and the cables to it are free and it snaps shut each time.
Sounds like too much air is getting into the intake.
Check the throttle and make sure it and the cables to it are free and it snaps shut each time.
Cargo Master
Joined: Jul 2009
Posts: 2,541
Likes: 54
From: Des Moines
1) Check for vacuum leaks.
2) Begin testing the ignition system components- if you can shut the truck off, turn it back on and it straightens out, that sounds electrical to me.
If necessary you can always pull codes- see www.fordfuelinjection.com for the how-to info. [Note- if you have a computer- I didn't notice you had an 88 when I first read the post.]
2) Begin testing the ignition system components- if you can shut the truck off, turn it back on and it straightens out, that sounds electrical to me.
If necessary you can always pull codes- see www.fordfuelinjection.com for the how-to info. [Note- if you have a computer- I didn't notice you had an 88 when I first read the post.]
