roldaphat9

my 2001 3.0 2 wheel drive is acting very strange.... it was running really rought felt to me like a spark plug wire fell off... I took it into autozone they told me that the code was a missfire, so I replaced the plug wires and the plugs.. and it still is doing it, I noticed there is no dist cap or anything so I can change that... what else could it be??? This is my only car plz help me! Thanks.

roldaphat9

ANYONE???!?! plz help me?! I checked for spark on the coil pack, by just barely pulling it off the wire where the cylinder is misfiring and it has a nice bright blue spark there so does this mean its not the coil or ... I dont know I need some sort of idea! I noticed before the truck actually threw a code it would kind of surge for a split second when at a stop light or something and was slowly getting worse until now when it totally is misfiring.... HELP PLZ! cant afford to take it to shop.

mre_power

could be a coil. could have also fouled the plug so it will still misfire

thefonz

How did the plugs look when they were changed? Pull the suspected plug and check to see if it is firing. Check compression at the same plug. Also could be intermittent problem with the coil pack.

lwb06

I have a 90 Ranger 2.9L that is having about the same problem. I have changed the plugs, wires, dist cap, rotor, cleaned the throttle body and even
added a fuel injector cleaner but none of it has helped. I have been told to change the fuel filter which I will do this coming week. I checked the compression and it looked good, the same on all cylinders. I have also been told it could be a bad injector or cam lobe "flat-spotted". So if you figure yours out please post the answer and I will do the same

Weirdo

Did autozone tell you the code??? The code p0300 defines multiple cylinders.
P0301-P0306 defines each cylinder by themselves. I would suspect an injector first but could be a coil pack.
I would check the injectors and then go from there.

Davey