Greetings,
Ok, this is driving me crazy.
I'm getting CEL code 71 (paper clip in blue connector under passenger side)
Misfire or Random misfire on Cylinder 1.

I've changed:
Rotor button, distributor cap, Plug wires, and Plugs.
No oil or anything noticable on the old plugs.

Runs perfect, does not hesistate, sputter, miss, etc.
As a matter of fact, it ran fine before I changed all of the above.

The CEL only comes on when I let off the gas pedal, ie deceleration.
Clear ECU, comes back 2 or 4 days later while decelerating.
Same code, 71.

I've been told this could be:
1) Clogged EGR ports
2) Crank angle sensor going bad

Is this correct? Any other possible causes of this code 71?
Any way to verify whether or not the crank angle sensor is going bad?
Any way to clean the EGR ports with fuel additives?

Because the car has 156K miles, runs freakin great, still gets good gas mileage too.
I don't baby the car either, it gets a good running day in and day out.
Practically everything is stock, except for the removal of the scoop on the air box intake, which has been off for over 100K miles.

Any help would be appreciated cause I don't want to spend any more money until I know the exact source of the problem.

Do car shops with code readers provide more detail as to the source of CEL codes?

Thanks

 

Do you have any emissions numbers on it? ... that might help lead you to the solution.

Could be either of the things you mentioned above or something else.... but a CAS should throw a code of it's own.

The codes only tell you which part or system is exhibiting a symptom. Sometimes the problem has nothing to do with the indication from the code(s).

 

you can try switching plugs and injectors around if the miss changes to another cylinder a plug or injector is the problem.egr, low compresion, low fuel psi,weak coil,bad spark wire,cloged injector,bad gas,low on coolent(over heating)i could go on and on good luck reply back