Weird CEL prob......
Thread Starter
|
Senior User
Joined: Nov 2005
Posts: 151
Likes: 2
Weird CEL prob......
Ok....
Truck runs great.....but after driving the CEL comes on.
I had codes shecked, only one "HEGO running lean".
No biggie, change sensor....same thing. (old one looked good btw).
I pulled the EGR, it looks fantastic, same with IAC...
Everything on the truck look like it has lower milage on it but I know miles are correct it just spent alot of time on the highway, 70k in 3 yrs.
I can't find any vac leaks, if you drive long enough the CEL will go out.
If the truck is already warm and yo turn it off, then drive it sometimes it will stay off for quite a while, sometimes it'll come right back on in just a few miles.
EVERYTHING is stock or a stock replacement, exhaust etc.
Could a bad Cat do this? Make the sensor think it's lean?
If it weren't for the annoying CEL you'd not think anything of it.
Thanks in advance,
KO
Truck runs great.....but after driving the CEL comes on.
I had codes shecked, only one "HEGO running lean".
No biggie, change sensor....same thing. (old one looked good btw).
I pulled the EGR, it looks fantastic, same with IAC...
Everything on the truck look like it has lower milage on it but I know miles are correct it just spent alot of time on the highway, 70k in 3 yrs.
I can't find any vac leaks, if you drive long enough the CEL will go out.
If the truck is already warm and yo turn it off, then drive it sometimes it will stay off for quite a while, sometimes it'll come right back on in just a few miles.
EVERYTHING is stock or a stock replacement, exhaust etc.
Could a bad Cat do this? Make the sensor think it's lean?
If it weren't for the annoying CEL you'd not think anything of it.
Thanks in advance,
KO
Thread Starter
|
Senior User
Joined: Nov 2005
Posts: 151
Likes: 2
It is a Bosch O2 sensor.
I need to look again but I think the original had FORD and Bosch on it, could that be right?
Truck had been ran 20 mins, 5 at idle then 15 into town.
Not sure on the timing. Will that cause the light to come on?
KO
I need to look again but I think the original had FORD and Bosch on it, could that be right?
Truck had been ran 20 mins, 5 at idle then 15 into town.
Not sure on the timing. Will that cause the light to come on?
KO
Thread Starter
|
Senior User
Joined: Nov 2005
Posts: 151
Likes: 2
Trending Topics
Junior User
Joined: Feb 2007
Posts: 65
Likes: 0
What are the codes and how do I check and clear them?
Can you do this without some expensive tool or hand held computer? My truck is a 1994 F150 and seems to be having some of the same issues...Thanks in advance for any replies
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote