Throttle pot? - Alfa Romeo Forum
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(Post Link) post #1 of 1 Old 23-08-08 Thread Starter
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Throttle pot?

Wondering if someone here has any experience with a fault I'm trying to remedy...........Alfa 156 v6 2000 Q-system.....Car was fine but threw a tantrum at the supermarket. Engine mgmt light comes on and it will only start but wont respond to the throttle (Fbw). Tow it home...slowly (we live up a steep hill). Do a couple of resets and query the ECU. Fault code 0120 throttle potentiometer is up and the throttle learn status is inactive. Couple of other codes are thrown up but look to be related, 0135, 0155, 0100,0110. New MAF from jamie just recently (bosch). Numerous resets and clearing of fault codes yield mixed results with engine at times responding to throttle and other times not. Further curiousities are: After a few seconds after starting transmission selector light disappears (the one with city or sport) and the trans. effectively feels like its locked into 3rd or 4th...Is this related to the engine going into limp mode?..Then the bootlid open light comes on!! Spend most of the day cleaning contacts and resoldering connections (as some here have mentioned doing) without any success. Next option to check the throttle pot resistance with a meter I suppose......
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