2001 V70 2.4T Fuel Injection problems?

dialex · Post by **dialex** » 22 Apr 2014, 20:49

I have been troubleshooting the air intake and replaced all the vacuum lines to the turbo, Air mass Meter, TCV, even the whole intake between Air MM and Turbo, and still car cannot go over 4000 rpm, it starts to loose power, as of right now I am suspecting Fuel filter and Fuel Pressure Pulse Damper, as the car starts to pulsate after I rev the engine, (along with the cabin lights, and sometimes shuts off) 170 000 miles, any ideas or advice will be appreciated,
Regards,

Alex
1989 760 IRS sedan B230FT, 1990 780 Bertone B230FT, 1990 760 Wagon B230FT; One of each body style,
2001 V70 2.4T ; 2004 XC90 2.5T, 1970 144 B20A,
2004 S60 2.5T parts car
Previously owned: 1999 C70 convertible HPT, 1987 740 GLE, 1976 Citroen CX Palace Diesel,
1986 Peugeot 205 GT 1.4, 1992 Peugeot 309 1.1

dialex · Post by **dialex** » 07 May 2014, 20:43

Replaced both Oxygen sensors and started the car- no changes, it will not go over 4000 rpm, checked fuel pressure- it was 55 PSI- and steady, I started to give up, opened up a beer, and started thinking...
There was a voice which told me: the ECU is not aware of the new sensors, so it's just trying to adjust the fuel trim as it was with the old ones ( I did watch a you tube video on oxygen sensors, and realized how important they are) so I should give it some more time or disconnect the battery...
After about 3-4 restarts and a trip to the Y, the car was back to normal- no CEL's no hesitation, very stable, Vadis claims top speed is limited at 130MPH and I did prove it today (without violating any traffic laws)
Alex

Post by **regent** » 08 May 2014, 08:31

Glad you sorted it.
Can you give us the GPS location of that test-drive section with 130 mph legal speed in FL ?

Post by **vtl** » 08 May 2014, 14:38

I guess, the coordinates will show Germany

Post by **regent** » 09 May 2014, 08:57

Aha,
Got it!

Post by **vtl** » 09 May 2014, 09:06

I love Germany. From Plzen-Nurnberg border to Aachen-Maastricht border just in 4 hours... On a weak Seat Ibiza 1.4TDI (VW Polo clone).

dialex · Post by **dialex** » 10 May 2014, 07:30

Don't stay in the left lane for too long, even on days with poor visibility and fog, people will be cruising at 120-140mph...I got very impressed when I was in a VW diesel minivan/ airport shuttle, and he was cruising at 200km/h /124 mph! He took us to a hotel 40 miles away in close to 20 minutes,

Alex
1989 760 IRS sedan B230FT, 1990 780 Bertone B230FT, 1990 760 Wagon B230FT; One of each body style,
2001 V70 2.4T ; 2004 XC90 2.5T, 1970 144 B20A,
2004 S60 2.5T parts car
Previously owned: 1999 C70 convertible HPT, 1987 740 GLE, 1976 Citroen CX Palace Diesel,
1986 Peugeot 205 GT 1.4, 1992 Peugeot 309 1.1