I've got a 98, 5.4L F150. The check engine
light comes on. When its' checked it comes
back with the message "no codes". I can't figure out why check engine comes on when it
has nothing to report.
Is is a faulty ECM? One mechanic told me to
try a new gas cap.
It's happened three times and will probably happen again. Anyone got any ideas out there?
After replacing gas cap with a stant type, the check engine light came on again at 1/2 tank of gas. Has anyone out there ever had Ford replace the ECM to see if that was the problem?
How much does the ECM cost?
Does Ford have a step to follow in their service manual/flowchart if check engine is on and "no codes" is reported.
Anyone have the manual?
[This message has been edited by whuttle (edited 06-01-2000).]

[This message has been edited by whuttle (edited 06-02-2000).]

[This message has been edited by whuttle (edited 06-02-2000).]

 

Have the gas cap tested or replaced.

------------------
2000 F-150 XL,RC,LB,5.4,4R70W,3.55LS,
4-wheel disc/ABS,Chestnut/Parchment,
Ford bedliner & gas/wheel/spare locks,
3" cold air box modification,Superchip,
Dynomax ultra-flow welded 3" cat-back.

 

Quote: One mechanic told me to try a new gas cap.