cprob Posted May 4, 2011 Report Posted May 4, 2011 Hi, I have a 1997 1.9 tdi 90bhp Gal and she keeps losing power. The car is ok at first but then suddenly loses power, struggles on hills and max speed is 70mph (ish). If I stop, turn off the ignition and re-start it's ok again but quickly loses power again. I've changed the MAF (from a breakers yard) but I've still got problems. I purchased a Vag Com and got the following results: Chassis Type: 7M - VW Sharan Scan: 25,01,02,03,08,09,15,16,1 7,18,19,22,29,36,37,39,45,46,55,56,76 Address 25: Immobilizer Labels: 7M0-953-257.LBL Controller: 7M0 953 257 D Component: A A Quote
chrispb123456 Posted May 4, 2011 Report Posted May 4, 2011 Hi thereCheck all your small vacuum hoses for perishing/splits on turbo, EGR valve, charge pressure control valve (N75)N75 may need cleaning or possible renewing. Quote
cprob Posted May 4, 2011 Author Report Posted May 4, 2011 Hi thereCheck all your small vacuum hoses for perishing/splits on turbo, EGR valve, charge pressure control valve (N75)N75 may need cleaning or possible renewing. That's great thanks. Is the N75 easy to find? Cheers,Rob Quote
Mirez Posted May 4, 2011 Report Posted May 4, 2011 You also need to clear all those codes, then take it for a drive and then rescan - you don't know whats current and whats from previous faults otherwise. Quote
Mirez Posted May 4, 2011 Report Posted May 4, 2011 Ohh and FYI, the rest of your codes: 00522 - Engine Coolant Temperature Sensor (G62) 29-10 - Short to Ground - Intermittent 00626 - Glow Plug Indicator Light (K29) 31-10 - Open or Short to Ground - Intermittent 00625 - Vehicle Speed Signal27-10 - Implausible Signal - Intermittent 00553 - Mass Air Flow Sensor (G70) 31-10 - Open or Short to Ground - Intermittent 00741 - Brake Pedal Monitoring27-10 - Implausible Signal - Intermittent 65535 - Internal Controller Error 37-10 - Memory Error 00575 - Intake Manifold Pressure 17-10 - Control Difference - Intermittent Quote
cprob Posted May 4, 2011 Author Report Posted May 4, 2011 Ohh and FYI, the rest of your codes: 00522 - Engine Coolant Temperature Sensor (G62) 29-10 - Short to Ground - Intermittent 00626 - Glow Plug Indicator Light (K29) 31-10 - Open or Short to Ground - Intermittent 00625 - Vehicle Speed Signal27-10 - Implausible Signal - Intermittent 00553 - Mass Air Flow Sensor (G70) 31-10 - Open or Short to Ground - Intermittent 00741 - Brake Pedal Monitoring27-10 - Implausible Signal - Intermittent 65535 - Internal Controller Error 37-10 - Memory Error 00575 - Intake Manifold Pressure 17-10 - Control Difference - Intermittent Thanks Mirez .... that looks like a lot I've got to sort out!! Quote
Mirez Posted May 4, 2011 Report Posted May 4, 2011 Hence you need to clear them out and see what comes back, a lot of modern cars have codes in them because the garage it either too lazy or not equipped to clear the codes. Quote
cprob Posted May 4, 2011 Author Report Posted May 4, 2011 Hence you need to clear them out and see what comes back, a lot of modern cars have codes in them because the garage it either too lazy or not equipped to clear the codes. Ah I see ... I recognise some of these problems that I've had in the past. The brake peddle switch packed up for example and I changed it. So the fault code could be still showing from then? Cheers,Rob. Quote
Mirez Posted May 4, 2011 Report Posted May 4, 2011 More the likely, some codes are self clearing but others don't and just sit there until cleared. Quote
chrispb123456 Posted May 4, 2011 Report Posted May 4, 2011 Hi thereCheck all your small vacuum hoses for perishing/splits on turbo, EGR valve, charge pressure control valve (N75)N75 may need cleaning or possible renewing. That's great thanks. Is the N75 easy to find? Cheers,RobHi againOn bulkhead behind fuel filter area Quote
cprob Posted May 6, 2011 Author Report Posted May 6, 2011 I can't find any obvious splits in the vacuum hoses ../ although they are not all easy to see or get at! I've taken the Pressure Control Valve off and was shocked when my local factor quoted Quote
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