23
Feb
1998 Ford Expedition Check Engine Light Flashing. Took truck to shop to clear the check engine light a full tune was done and the check egine light was gone a few days later the chec engine light came back on I took the truck back to the mechcanic and he made the check engine light go out again. When the Check Engine Light illuminates and the diagnosis is a failed MAF it will require replacement to correct the issue. Generally the light will only illuminate when the overdrive is manually turned off. Found the hose to the pcv valve was nearly ripped in half.
A flashing check engine light is your Ford Expedition s way of saying I have a serious problem dont ignore me. This also means that its potentially dumping raw fuel into your exhaust which can and will damage your expensive cat. When the check engine light blinks - thats bad. During the same day the light came back. Have it diagnose ASAP by a qualified technician. Will the check engine light reset itself or should I have it manually reset.
My 1998 Ford Expedition 54L was running good but idling rough.
I was getting codes P0171 and P0174 from the ECM. Trying to find more likely reason. In some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light. Vibration or shaking may be caused by misfires poor fuel pressure or faulty spark plugs. Check engine light is on Diagnostic Pre-purchase Car Inspection. I thought my worrries were over.