I have a 2007 Audi A4 Avant S-Line 2.0L Turbo Petrol. Very recently [approx 1 week ago, since the weather has turned much colder] the 'tick-over' revs - which had always been approx 1000rpm suddenly started 'surging' up to 1300-1400 rpm. This only lasts a few seconds then the revs fall back to 800-900 rpm and the car will start shuddering slightly. Then the revs will surge up again...and repeat this 'cycle'. I have checked the oil and that's fine but I haven't got a diagnostic testing kit to check the engine management system. Do you have any advice what the problem is - and how I can fix it? Thanks! PS the car doesn't cut out or misfire at all - just this constant surging and dropping of the tick-over when the engine is idling.
For myself it was the N290, when replaced cured. However it came back again. The replacement was a used part. So I sourced one from ebay, apparently genuine. Didn't work immediately, sorted itself after some driving then came back again. In the end used VCDS to reset learned metering values and good up until now. I've read many people say this problem is related to metal in the fuel system. 🤔
Did you replace with a bosch part (about £100-130) or a genuine VAG part from TPS? I've replaced with the bosch unit and had not improvements at all... so frustrating
I have an 2010 audi a5 2.0 tfsi quattro and recently once the car gets to temp while driving the revs drop for a split second . It does it intermittently but on every drive. The idle seems a bit low too 700/800 rpm. I also get occasional stop/ start function unavailable messages and the epc light which goes off once started the next day. I have 2 codes, p032200 and p008800. After some reading i suspect the crankshaft position sensor but I'm a novice. Any thoughts pls? Any help would be greatly appreciated 👏
Hello, first time that i had this kind of issue everything was running fine until i switched to Sport mode and put foot down the car totally dies, after that I just stopped the car switch to N then started the car again and everything return to normal, could you know what's causing the problem please? Btw I did remapping from 140hp to 180 and disabled EGR 5 months ago.
Hey so I was driving and felt my car loosing power so I pulled over turn the car off and the car never started back again it cranks but that’s it I notice that while it was losing power my epc light came on I put the scanner on and it just said it was misfiring I change the sparks and coils and it still doesn’t turn on do u know what it could be can u pls get back at me with ur opinion pls I have a 2008 Audi a4
Hi great video, I currently have the same fault with my 2009 A4 with the exact same fault I have tried replacing the Fuel pressure regulator with no luck. Can you advise on anything else to check Thsnks.
In this example the fault was the fuel rail pressure regulating valve which works in tandem with the fuel pressure regulator on the fuel pump. You could have an issue with either of those. Testing is the only way to work out why the system is losing pressure. Not uncommon for injectors and fuel filters to contribute to fuel pressure issues. Beat of luck
@@mobileautomotiveservices5461 thanks for the reply, I have been lucky enough to have a sales car with the same engine to try parts from, I have swapped the IMV, Fuel pressure Sensor And the DRV with no luck, also tried the Aux pump And the electric pump in the tank with still no luck, Done a leak test with nothing standing out I was suspecting the high pressure pump but like the Audi in your video mines drives fine, it just faults when Idling. When pulling the Imv ,drv and the fuel pressure on the verso the fuel pressure is bouncing around. Any help would be greatly appreciated.
@@mobileautomotiveservices5461 hi sorry for late reply. I have done a leak off all looks fine. Had the car put on the vag com system and had the(new Bosh) pressure regulator calibrated. Still no luck. What is strange is when cold it idles very rough and drives very poor with a lot of jumping around, When it gets a bit warmer the idle is still just as bad but driving is fine with just a little miss fire under 1500 to 1700 rpm. Could it be a IMV on the pump? I did try one from another vehicle but did not calibrate it? Thanks again for replying.
Hi I have the same problem on my audi a4 b8 2.0tdi 88kw caga rough idle but runs perfect no codes just p200800 If I change the high pressure fuel regulator will it fix the problem thanks for your reply.
hi, I have an Audi a4 b5 nonturbo, idles fine, revs fine, but has no power almost non, ran it through the machine it picked up the throttle body, had that replaced, improved on the idling but still no power...
@@sufyanhussain8505 Yeah man what did you end up doing? I've swapped fuel pressure regulator, metering valve and the fuel sensor and still no change... not sure where to go next...?
@@RoxusRemo what car? Only erratic at idle? And did you use vcds? Initially the valve on the pump. That made it go away for a little while but returned. The problem was on the low pressure side..the valve on the fuel rail. Thank God it was getting annoying.
Hi buddy get some contact details I would like you to diagnose mine it does my nuts.. I have spent approx 2k at VAG specialist... And still same problem ... They said ... Timing chain.. VVT valves plus body... Then crank breather... Then crank sensor... .. now they said injectors are faulty.. but i have lost trust in them.. btw. No faults on the dash it is 2.0 TFSI 2015. . Rough idle sometimes but it getting more frequently now..
@@zarrulez7284 Mines doing the same. I'd say mine is worse when cold and less noticeable when warm but still jumping. Error scan shows me fuel pressure Regulation discrepancy. I can reset the metering temporarily fixes it. So I'm going to order the sensors and use Vcds. Only on warm engine? Can you post a video of it?
Symptoms like that on an FSI system will generate faulty codes. First at step would be to get a scan of the engine management ecu for a direction to move in. Sounds like fuel supply issue but impossible to say without more data. Best of luck!
I have this exact same issues minus the loss of power, drives perfect until I leave it sit in idle then the car shakes and is hunting, no fault codes when plugged in, changed two injectors but still idles rough, please help
Did you ever get this problem fixed? My car is an audi a4 2009 quattro and it runs like an angel while going over 10 miles per hour but as soon as I come to an idle at a red light it shakes violently and then the EPC light comes on i then shut the car off and turn it back on and as long as I'm not at a stop I idle it works
Kathleen Velazquez yes I got this fixed, I had to send all my injectors away to get checked, turns out one of my injectors had an electrical fault so I replaced this and the rough idle was gone. My mechanic then advised me to replace my fuel filter and I did and no problem ever since.
I have a 2007 Audi A4 Avant S-Line 2.0L Turbo Petrol. Very recently [approx 1 week ago, since the weather has turned much colder] the 'tick-over' revs - which had always been approx 1000rpm suddenly started 'surging' up to 1300-1400 rpm. This only lasts a few seconds then the revs fall back to 800-900 rpm and the car will start shuddering slightly. Then the revs will surge up again...and repeat this 'cycle'.
I have checked the oil and that's fine but I haven't got a diagnostic testing kit to check the engine management system. Do you have any advice what the problem is - and how I can fix it? Thanks! PS the car doesn't cut out or misfire at all - just this constant surging and dropping of the tick-over when the engine is idling.
Any chance ya managed to find out the answer to this? It sounds like that’s what’s happening to mines.
For myself it was the N290, when replaced cured. However it came back again. The replacement was a used part. So I sourced one from ebay, apparently genuine. Didn't work immediately, sorted itself after some driving then came back again. In the end used VCDS to reset learned metering values and good up until now. I've read many people say this problem is related to metal in the fuel system. 🤔
Did you replace with a bosch part (about £100-130) or a genuine VAG part from TPS? I've replaced with the bosch unit and had not improvements at all... so frustrating
I have an 2010 audi a5 2.0 tfsi quattro and recently once the car gets to temp while driving the revs drop for a split second . It does it intermittently but on every drive. The idle seems a bit low too 700/800 rpm. I also get occasional stop/ start function unavailable messages and the epc light which goes off once started the next day. I have 2 codes, p032200 and p008800. After some reading i suspect the crankshaft position sensor but I'm a novice. Any thoughts pls? Any help would be greatly appreciated 👏
What part was replaced?
Hello, first time that i had this kind of issue everything was running fine until i switched to Sport mode and put foot down the car totally dies, after that I just stopped the car switch to N then started the car again and everything return to normal, could you know what's causing the problem please?
Btw I did remapping from 140hp to 180 and disabled EGR 5 months ago.
Jebus this one baffled me completely
Hey so I was driving and felt my car loosing power so I pulled over turn the car off and the car never started back again it cranks but that’s it I notice that while it was losing power my epc light came on I put the scanner on and it just said it was misfiring I change the sparks and coils and it still doesn’t turn on do u know what it could be can u pls get back at me with ur opinion pls I have a 2008 Audi a4
Hi great video, I currently have the same fault with my 2009 A4 with the exact same fault I have tried replacing the Fuel pressure regulator with no luck. Can you advise on anything else to check
Thsnks.
In this example the fault was the fuel rail pressure regulating valve which works in tandem with the fuel pressure regulator on the fuel pump. You could have an issue with either of those. Testing is the only way to work out why the system is losing pressure. Not uncommon for injectors and fuel filters to contribute to fuel pressure issues. Beat of luck
@@mobileautomotiveservices5461 thanks for the reply,
I have been lucky enough to have a sales car with the same engine to try parts from,
I have swapped the IMV, Fuel pressure Sensor And the DRV with no luck, also tried the Aux pump And the electric pump in the tank with still no luck,
Done a leak test with nothing standing out
I was suspecting the high pressure pump but like the Audi in your video mines drives fine, it just faults when Idling.
When pulling the Imv ,drv and the fuel pressure on the verso the fuel pressure is bouncing around.
Any help would be greatly appreciated.
@@archiesweeview9226 have you done an injector leak off test? Do you have any fault codes logged?
@@mobileautomotiveservices5461 hi sorry for late reply.
I have done a leak off all looks fine.
Had the car put on the vag com system and had the(new Bosh) pressure regulator calibrated. Still no luck.
What is strange is when cold it idles very rough and drives very poor with a lot of jumping around,
When it gets a bit warmer the idle is still just as bad but driving is fine with just a little miss fire under 1500 to 1700 rpm. Could it be a IMV on the pump? I did try one from another vehicle but did not calibrate it? Thanks again for replying.
Hi can you tell me with this test would you expect any voltage drop on a good system?
Hi 👋 , Great video. I have a similar issue. What is the name of your garage ?
Hi I have the same problem on my audi a4 b8 2.0tdi 88kw caga rough idle but runs perfect no codes just p200800 If I change the high pressure fuel regulator will it fix the problem thanks for your reply.
Did you fix it?
hi, I have an Audi a4 b5 nonturbo, idles fine, revs fine, but has no power almost non, ran it through the machine it picked up the throttle body, had that replaced, improved on the idling but still no power...
This seems to be a fuel filter.
What is the part name that you replaced? I have the same thing going on
Did you fix it?
@@sufyanhussain8505 did you fix it bro?
@@RoxusRemo yes bro I did you need info
@@sufyanhussain8505 Yeah man what did you end up doing? I've swapped fuel pressure regulator, metering valve and the fuel sensor and still no change... not sure where to go next...?
@@RoxusRemo what car? Only erratic at idle? And did you use vcds? Initially the valve on the pump. That made it go away for a little while but returned. The problem was on the low pressure side..the valve on the fuel rail. Thank God it was getting annoying.
Hi buddy get some contact details I would like you to diagnose mine it does my nuts.. I have spent approx 2k at VAG specialist... And still same problem ... They said ... Timing chain.. VVT valves plus body... Then crank breather... Then crank sensor... .. now they said injectors are faulty.. but i have lost trust in them.. btw. No faults on the dash it is 2.0 TFSI 2015. . Rough idle sometimes but it getting more frequently now..
Is it doing the same as this video?
@@sufyanhussain8505 yes but only on idle gear .. only and only on the warm engine
@@zarrulez7284 Mines doing the same. I'd say mine is worse when cold and less noticeable when warm but still jumping. Error scan shows me fuel pressure Regulation discrepancy. I can reset the metering temporarily fixes it. So I'm going to order the sensors and use Vcds. Only on warm engine? Can you post a video of it?
I’m having the same sort of problem with my FSI. As soon as you put the foot down it totally dies. Would you have any idea ?
Symptoms like that on an FSI system will generate faulty codes. First at step would be to get a scan of the engine management ecu for a direction to move in. Sounds like fuel supply issue but impossible to say without more data. Best of luck!
I had similar issue and resolved it by changing high pressure sensor on fuel rail.
I have this exact same issues minus the loss of power, drives perfect until I leave it sit in idle then the car shakes and is hunting, no fault codes when plugged in, changed two injectors but still idles rough, please help
Did you ever get this problem fixed? My car is an audi a4 2009 quattro and it runs like an angel while going over 10 miles per hour but as soon as I come to an idle at a red light it shakes violently and then the EPC light comes on i then shut the car off and turn it back on and as long as I'm not at a stop I idle it works
Kathleen Velazquez yes I got this fixed, I had to send all my injectors away to get checked, turns out one of my injectors had an electrical fault so I replaced this and the rough idle was gone. My mechanic then advised me to replace my fuel filter and I did and no problem ever since.