flashing check engine light on 1997 Ford Expedition

97 Ford expedition check engine light flashing truck running rough.

by in Grand Rapids, MI on April 30, 2011
3 answers 1 comment
ANSWER by on April 30, 2011
A flashing check engine light, is showing you it is about to set a code in the PCM. If you don't have access to a scanner to retreive the codes, you can go to local auto parts store. Your big chain stores like Advance, Auto Zone, O'Reilly will do this free for you. We would need the code numbers to really help you, everything else would just be guessing.
COMMENT by on January 06, 2014
or you could look into a programmer that will pinpoint the issues, cost a few dollars fro a good one, it'll save you money in the long run
ANSWER by on April 30, 2011
Flashing CEL usually means a hard misfire, which could damage the catalytic converter. I bet you have some P030x codes in the ECM. You have to get a computer diagnostic to see which cylinders are misfiring. Zee
ANSWER by on January 06, 2014
if it's running rough try using a different grade of fuel, I read the manual and they tell you that 87 octane runs the truck smooth, if you can find it run "seafoam" for the next couple of tanks, the stuff is 10+
Related Items:
WHILE driving,especially on the highway, my check engine light which is already on begins to flassh. trying to find more likely reason.
Sometime engine jerks, it gets worst when engine heats up and going up steap hills. I did a dignostic check on engine and everything was ok no problems found. I repplaced the TPS sensor and it sti...
I changed #2 coil because the light was staying on and I went to advance auto to put it on computer . They told me number 2 cylinder misfire so I replaced #2 coil like they recommended . My SUV idl...
An illuminated Check Engine Light could indicate that one or more of the ignition coils has failed due to excessive spark plug gap. To fix this problem, the ignition coils that have failed, the spa...

Related Content