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Re: I need help badly Posted by SWEDECAR [Email] (#112) [Profile/Gallery] (more from SWEDECAR) on Sat, 12 Sep 2009 21:00:25 In Reply to: Re: I need help badly, q-man, Sat, 12 Sep 2009 20:42:21 Members do not see ads below this line. - Help Keep This Site Online - Signup |
The best help would be to get the WIS program for you PC so that you can follow the electrical fault tracing scheme yourself.
Since it seems to be an intermittent problem it makes it much worse since all fault tracing scenarios are built on that the problem is present at all times.
To make matters worse is that two of the four wires are branched out in splices called J21 and J22 and one goes to the EVAP pressure sensor by fuel tank and the other to throttle body.
What that means is that if something is going on with any of those two, they might trigger a scenario where the ECU think it is the MAP sensor when in fact it is one of the others.
I have seen Volvo's where 4 different sensors share a wire and you have fault codes for 3 of them but the problem is at the 4th one (actually the tank sensor).
On a whim, I would disconnect the pressure sensor at tank (right by fuel pump) and see if you get rid of the 1106 to 8 and only trigger a fault code for the tank sensor.
If so, it is probably the tank sensor.
Anders
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