Clear the codes, and reset the computer. If the problem replicates itself, you can rule that out.

The Computer in my Friends 2500 got wet, and it would intermittently throw codes, for conditions the truck wasn't suffering from. A good long blow dryer bath and a reset cleared the issue up.

 

Am probably going to change cap/wires ect this weekend, what kind of bolts are holding that distributor down, flathead ?

 

philips...

 

Keep a cool head while changing out cap and rotor. Its not an easy reach.

 

Best done when semi-drunk.

 

I know, not looking forward to it, especially @ 25 degrees - I'll be forced to keep a cool head.