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rough idle / codes 511 and 512 850 1994

posted by  JimSig on  Wed Jun 11 09:53 CST 2003
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last visit: Fri Mar 28 17:24 CST 2014
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I'm experiencing a rough (surging) idle in my 94 855 (non turbo 198K miles) and it is setting codes 511 and 512 in A2. Can anyone tell me what these codes are or suggest any possible solutions!

I've already replaced the fuel filter, spark plugs, dist cap and rotor, and flame trap and cleaned the throttle - all of which were in need of service - but none of which have solved the problem.

Thanks!

Jim






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New rough idle / codes 511 and 512 [850][1994]
posted by  JimSig  on Wed Jun 11 09:53 CST 2003 >


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