Check Engine Light
Junior User
Joined: Nov 2000
Posts: 51
Likes: 0
Check Engine Light
I have an '88 F-150 with a 302. I recently got a new motor, and now about 4,000 miles later my check engine light is flashing, but it won't stay on. It only does this in about the first
20-25 minutes of driving the truck. I took it to the place where i got my motor (American Engine Exchange) and had them run a diagnostic, but they found nothing. Any ideas on what it could be. Also, after i got the new motor, my throttle started sticking, what would cause that? I heard something about the fuel injectors.
Shawn
20-25 minutes of driving the truck. I took it to the place where i got my motor (American Engine Exchange) and had them run a diagnostic, but they found nothing. Any ideas on what it could be. Also, after i got the new motor, my throttle started sticking, what would cause that? I heard something about the fuel injectors.
Shawn
Fleet Mechanic
Joined: Aug 2000
Posts: 1,504
Likes: 1
From: Texas
Check Engine Light
Here's a couple of Ideas you might want to look into.
1) Check your throttle cable, it might have some pieces boken on the plastic piece that goes over the spring causing it to stick.
2) Clean your throttle body, ad check the Throttle Position Sensor.
3) Are all of your sensors plugged in, and all of the vacuum lines hooked ip and in good condition?
4) When the light flashes on the dash, get the flash sequence. ie: Flash-flash pause Flash-Flash-Flash
(The above code is just for referrence I have no Idea what that code is without looking in my chilton's manual)
post back and let us all know how it goes.
[link:www.geocities.com/hotrodford_88/|Hotrodford_88's Webpage]
[link:www.geocities.com/hotrodford_88/1965_F100.html|Hotrodford_88's 1965 F-100!]
[link:www.westlakevfd.org|Westlake VFD Website]
1) Check your throttle cable, it might have some pieces boken on the plastic piece that goes over the spring causing it to stick.
2) Clean your throttle body, ad check the Throttle Position Sensor.
3) Are all of your sensors plugged in, and all of the vacuum lines hooked ip and in good condition?
4) When the light flashes on the dash, get the flash sequence. ie: Flash-flash pause Flash-Flash-Flash
(The above code is just for referrence I have no Idea what that code is without looking in my chilton's manual)
post back and let us all know how it goes.
[link:www.geocities.com/hotrodford_88/|Hotrodford_88's Webpage]
[link:www.geocities.com/hotrodford_88/1965_F100.html|Hotrodford_88's 1965 F-100!]
[link:www.westlakevfd.org|Westlake VFD Website]
Tuned
Joined: Nov 2000
Posts: 426
Likes: 1
From: houston, texas (now Berli
Check Engine Light
I had the flashing CEL too. I took the EGR valve position sensor (EVP sensor) out, measured the resistance and put it back. Since then, the CE has stayed off. Therefore, I think a flashing CEL has to do with some intermittent failures of the EGR system. I did find some EGR related error codes following:
http://dalidesign.com/hbook/eectest.html
Cheap (0$) and easy. Priceless :-)
With the throttle sticking, I'd also suggest you take the throttle body off and inspect it. I have the same thing since I cleaned the TB and forgot to lubricate it before re-assembly :-)
Let us know how it turned out!
http://dalidesign.com/hbook/eectest.html
Cheap (0$) and easy. Priceless :-)
With the throttle sticking, I'd also suggest you take the throttle body off and inspect it. I have the same thing since I cleaned the TB and forgot to lubricate it before re-assembly :-)
Let us know how it turned out!
