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Not sure about the ign switch, I mot'd it yesterday everything was fine, fitted new bulbs in the main and side. After the mot the epc lights on, power loss, auto windows don't work and my new chuffing sidelight bulbs are blown :( The car failed on a minor point but I can't retest it...

It's intermittent power loss, it will go into limp mode with the EPC light on for a short while then fix its self. Have changed map, vac transducer, all o rings, filters etc.... .Could a bad earth do this because the auto window control seems to stop working around the same time?

Hi all, is there any way to reset the engine ecu without the star diag? I can't get to a garage for diag and my mot is due so I need the light off to buy me a bit of time. Thanks in advance.

Pre pump is ok, the delivery valve seals do need doing but I didn't think they would cause air ingress. Thanks Pete.

Hi all, I have a problem with a leak on the IP, within 20mins of stopping air will somehow get into the pump causing start up to be a right pain. It is not the fuelines as I have replaced the orings and i have stripped and replaced the shut off valve orings too. I am looking for any...

Thanks for the ideas chaps.

At idle in neutral the revs drop by 1-200rpm when I press the brakes which makes the engine chug, could it be a pump fault as I seem to get problem after problem with this bloody car. Thanks Pete.

I did have a problem with air in the pipes but after changing the orings its much better. I happens when the engine idles in neutral, runs nice and smooth until you put your foot on the brake and it starts to chug like it wants to stall.

Hi all, When the car is at idle and I put my foot on the brakes the engine really seems to struggle, would this indicate a vacuum problem? Thanks in advance, Pete.

Doh!!! That puts an end to that sketchy plan. Strangley the EPC light has been off since I started this thread, I removed the vac line to the transducer and gave it a blow/suck which seems to clear the fault for a few days. Are these valves serviceable in any way?

Hi, thanks for the info. Does your chart tell you if the solenoid is: maximum OCR- Maximum vac (5v) minimum OCR- No vac? I have a couple of vac control solenoids which might work as they are controlled via the earth pin on the ECU. Thanks Pete.

Oh not read the codes but planning on it when I get hold of some dosh. The fault is intermittent and can last a few days. From what I have read there are only three sensors that will put it in limp mode and the others appear to be ok.

Thanks Alex that's very helpful, do you know the voltage range for the turbo solenoid? Cheers Pete.

My EPC light is on and I am convinced its the turbo control vacuum solenoid. My plan is to use the EGR solenoid as I have disabled it. Instead of splicing into the wires I would like to swap the EGR/boost control at the ecu connector then just make new vac lines.

Hi, I am looking for the wiring diagram for the above engine, I would like the EGR/boost control circuit back to the ECU if any one would be kind enough to share it with me. thanks in advance, peter.

Hi, I am looking for a diagnostic scanner for the above engine but before I purchace one I would like to know if anyone can recommend one? I have read about MBStar but it is well out of my price range and I am only after basic P codes as the EPC light is on. I know the plug is the round...

one thing I noticed today is that with the engine running and the exhaust blocked on the vac solenoid for the turbo the wastegate moved which I assume is correct due to maximum vacuum being applied to the actuator. Doing this a few times made the EPC light go out and max power was restored...

oh can you recommend a diag reader as I would prefer to buy one than rely on a garage to do it. nowt too expensive though

I have had problems with air getting in the system so I recently changed the orings and the one behind the stop solenoid. It was since then that the problem started, it also runs on for maybe 2sec if that's a sign of anything.

Hello all, I have an intermittent power loss problem with my C250td which brings the EPC light on. When the light is on the cars acceleration really suffers, I have given the air temp sensor a clean, checked the vac pipes for splits, checked the Map sensor with a multimeter and given the...