Re: p0340, p1260, engine vacuum testing results
Here are some interesting work on the Throttle body potentiometer cleaning and wires:
I opened the Throttle Body last night, used some spray grease to prevent breaking the plastic catches.
Found that most of the wires(4 black for the front potentiometer) and 4 coloured for the other pot. were with cracked or/and peeled insulation.
You can see that only if you lift up the black connector.
I believe the reasons are temperature and age related.
I managed to re-insulate them, using a el. insulating tape.
I know, did the lazy job, we will see.
Then check all connectors for continuity and/or short cut between them.
Regarding the side access potentiometer cleaning:
Sprayed(underneath the rotor, while turning constantly the TB valve) tons of el. connection cleaner. It evaporates easily. And assembled the unit.
After cleaning the Throttle Body and connecting it to the car, stopped receiving a specific code(p1260: throttle return spring too low force), so far.
However, still have the problem with my DI cassette(related codes: p0340, and p0300),
and a pending code: p1300(torque limitation, throttle valve), which IS THE BIG QUESTION
Is this possibly still related to the DI cassette malfunction or is still Throttle body potentiometer related issue?
Well, waiting for my "working(bought from eBay with a three months warrantee)" DI cassette to arrive, so I can finally solve this dilemma.
BTW, I will put new plugs, and new 4mm vacuum hoses.
Air filter is new, compression is fine, no vacuum leaks(checked).
So, I will let you all know very soon about my success.
Here are some pics of the TB cracked wires:http://picasaweb.google.co.uk/bisli...at=direct