Thanks for the reply... the same codes (pin 7 code 2 and pin 4 code 8) have come up after clearing both codes and the "check Engine Light", then driving the car for 20 miles. The CEL has not returned as of yet.

What do you suggest I do? Should I replace the 'air mass sensor' and see if it fixes the problem? Is there a way to diagnose the sensor with a multimeter or something?

Would the same codes come up with a bad 'air mass sensor'?

Thanks for all the help...

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sjsfiji

'87 W124 260E (DD)
98K orig. mi. @7/15
CLK 7-Spoke Forged Wheels
Neuspeed springs/Bilstein Sport
4/3 bump (F/R)

'97 993 Carrera
106K orig. mi.
Always driven like it's stolen