2000 Expy with rough idle no CEL??

[photoexpedition]

Hey, i have 2000 expy with 147k on it. it has a rough idle and hesitation (feels like its missing a cylinder) however the check engine light is not on? Is this anything you have experienced. Maybe just needs new plugs? If the coil was bad would it throw a check engine light? thanks for your help


Well I just back from autozone and they said that my check engine light was not working and that the code showed #4 Cylinder misfiring. So now 2 questions - does a check engine light go bad or do you think the guy i bought it from disconnected it? (i just picked it up yesterday) and in order to replace coil and spark plug on that far back to i have to take the fuel rail off? meaning I will need orings for the injectors?

 

[JUST4FUN]

no you should be able to do the job with out removing the
injector. also look for a coolant leak right above this plug (the plug is on the passnger side all the way in the back)fix this first
replace all plugs and the boots . then go from there.

 

[mustangrfast88]

if it is the number 4 plug it is the one one the passanger side all the way in the back and if the number 4 is the one on the driver side you dont have to take the fuel rail off to get to it, it is the number 7 plug you have to remove the fuel rail to get too

 

[mustangrfast88]

as for the check engine light the bulb could of went bad but highly unlikely he might have know about the problem and disconnected it

 

[photoexpedition]

Fixed!

Hey guys replaced the coil and spark plug on #4 cylinder and runs great now - i am going to replace all plugs this weekend. Thanks for the help!!

 

[mustangrfast88]

good luck on the plugs and make sure the engine is cold when you change the plugs and put anti suize on all the plugs and make sure you get them tigth

 

[JUST4FUN]

Originally posted by mustangrfast88
if it is the number 4 plug it is the one one the passanger side all the way in the back and if the number 4 is the one on the driver side you dont have to take the fuel rail off to get to it, it is the number 7 plug you have to remove the fuel rail to get too

Do you even read the other posts before you post
you almost typed my post word for word
strange i never have taken the fuel rail off to remove #7

 

[mustangrfast88]

well justforfun do you have a 4.6 or the 5.4 and on a 2000 you have to pull the fuel rail to change number 7 on a 5.4

and yes i read post before i post

 

[JUST4FUN]

i have a 5.4 2001 and no i did not pull the rail
ummm Snap-on two stage extentions first stage strait
second (slight pull on plug socket)stage is a wobel
so no injector interferance.
good tools make all the diffrence in the world

 

[mustangrfast88]

i got good tools but my problem was there was this little silver thing right above the number 7 plug that i could not get to no matter what i tried thats why i had to pull the fuel rail