I Had a Panda Yesterday with a slight stutter on revs and logging "ECU Internal fault" "EEprom Error". and "injector misfires"

We checked coils and spark plugs as a starting point.


No 1 Spark plug was FR8DC+ and no 2, 3 and 4 were F8DC.

It turns out that the problem only started when the customer changed the oil and Spark plugs, He thought it might have a faulty plug, so went back to the spares shop and bought 1 more plug in case one was faulty. ( thats why it had one correct plug fitted )

This Spares shop has been warned on several occasions about this problem and if they are not carefull will end up with a massive claim against them, espescially if the car ends up in one of those places that fits parts just on what the machine tells them, most places would replace the ecu and then insist that the faulty spark plugs had destroyed the ecu and run a bill up for hundreds or thousands of pounds.

I have seen that happen with a peugeot where it had had the wrong spark plugs fitted and the speedo kept dropping off, The Main Dealers fitted a new speedo head and it kept happening, so they fitted another speedo head and eventually found the Incorrect spark plugs, they then insisted that the spark plugs had destroyed the 2 speedo heads and charged for the lot. . i think that if they had found and changed the spark plugs, the fault would have been cured.

( Easy for any garage to believe the Diagnostic machine ) and would anyone be in the wrong to replace an ecu when the diasgnostic machine says, " ECU INTERNAL FAULT" and EEPROM ERROR". )
?????????

Tony.