hi Guys,
So recently my polo gti 9n3 starting acting faulty, when I accelerate full it only boosts up to 0.4 bar, but when I accelerate halfway it slowly goes up to 0.9 bar peak, changed the turbo 2000kms ago and previous turbo peaked at 1.3 bar, also it became very heavy on fuel and backfires and switches off in traffic,
any ideas what could be wrong? does it need a remap and if so who do you recommend?
Polo 9n3 Gti Acting faulty
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- Enlisted
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- Cadet
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Re: Polo 9n3 Gti Acting faulty
Try a different fuel pressure regulator or check pressure lines going to it they small diameter pipes and enough movement could tear the hose.
- Scatman
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Re: Polo 9n3 Gti Acting faulty
I'd check all the plugs and confirm that they're plugged in properly, i.e. Map sensor, Maf sensor etc. It could be a mechanical issue or electrical, so it's a good start to check all your harness/sensor plugs and hoses etc.
Next I'd check for any boost leaks. Who rebuilt and refitted your turbo if I may ask?
Next I'd check for any boost leaks. Who rebuilt and refitted your turbo if I may ask?
Current:
2008 BMW 320d Msport Auto
Ex:
2006 Audi A3 2.0T
2006 BMW E90 330d Manual
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2006 Sportline
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Mk4 Jetta TDI - 79wKw, 256Nm atw @KAR
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Margaret - '75 Audi 80 Restoration Project
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2005 1.4i Citi Golf
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2008 BMW 320d Msport Auto
Ex:
2006 Audi A3 2.0T
2006 BMW E90 330d Manual
*Click here*
2006 Sportline
*Click here*
Mk4 Jetta TDI - 79wKw, 256Nm atw @KAR
*Click here*
Margaret - '75 Audi 80 Restoration Project
*Click here*
2005 1.4i Citi Golf
*Click here*
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- Enlisted
- Posts: 9
- Registered for: 7 years 3 months
- Location: Johannesburg
Re: Polo 9n3 Gti Acting faulty
Okay im not sure how to check pressure lines lol , if it is overfueling could it be that my plugs need to be changed? and a ex vw technician just replaced the turbo i did not repair it.
- ICE King
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- Registered for: 12 years 10 months
- Car Make: VW
- Car Model: Polo GTI 20V , Mazdarati
- Location: Cape Town
Re: Polo 9n3 Gti Acting faulty
As above and check also
1.N75 Solenoid. perhaps it was reinstalled incorrectly.
2. Inspect Down-pipe and and manifold for no leaks.
All else fails, have the car scanned , hopefully it points you to the right direction.
1.N75 Solenoid. perhaps it was reinstalled incorrectly.
2. Inspect Down-pipe and and manifold for no leaks.
All else fails, have the car scanned , hopefully it points you to the right direction.
1992 Mazda 323 B3 - Masala Mods
2008 VW POLO GTI - 76mm DP + 63mm exhaust , induction, FMIC, Thanas Tuned
2008 VW POLO GTI - 76mm DP + 63mm exhaust , induction, FMIC, Thanas Tuned