Engine maintenance light part2

Hi All, My mechanic came to see me as I asked him too do so & after checking the OBD 1 socket and doing the thin wire test via 6 to 7 connectors he told me that it showed code 55 which is no fault found!! But the engine light is still coming on when I have to wait at a junction or a laybay waiting for a gap in the traffic and if the car has been ticking over for a long time before I drive away. Any ideas ? My mechanic did say it could be that the throttle body has too much fuel in it, so the sensor believes it's a fault or maybe the fuel inlet value needs correcting as I don't think the throttle body has been touched for 20years or cleaned for that matter?

yours Peter 0003
 
Throttlebody doesnt allow fuel in.. iT allows air in. IT also doesnt hold fuel. Its not a carb. Get a proper mechanic to check iT.

The soldering inside the throttlebody tends to crack. That could mess with stuff. But please get a proper mechanic to check the whole car And most of your issues should be solved.
 
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