Hi to all!
having a problem when driving at high revs.. at 2000-3000 rpm the car runs smooth and good. but when it goes to 4000... its starts losing power . And this feeling is not permanent.. i mean sometimes it gives good power and sometimes i feel nothing.. I think its an electrical problem. I THINK THE FUEL DOESNT BURN 100% and it starts smoking sometimes(smells like the fuel is getting out without burning). maybe the spark is not efficient or maybe the MAF is not good anymore(but i tested it and its okay)
Please help me out with this!
losing power at high revs
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- jamesy12345
- 480 Veteran
- Posts: 753
- Joined: Tue Apr 03, 2012 5:49 am
- Location: Durham, England
Re: losing power at high revs
As you say maybe the spark is not so good - plugs/HT side of ignition OK?
Is it more noticable with higher boost or just revs? Could be a boost leak or knock sensor??
http://www.volvo-480-europe.org/forum/v ... =11&t=6471
Is it more noticable with higher boost or just revs? Could be a boost leak or knock sensor??
http://www.volvo-480-europe.org/forum/v ... =11&t=6471
Current:
Volvo S60 '04
Renault 21 '91
Subaru Legacy '05
Mazda RX-7 '93
Renault 5 '84
Previous:
440 2 litre, 440 Turbo, 460 Turbo, 480 Turbo x2, 854 T-5R, S40 T4, V40 T4, S70 T5 & R, V70 R x2, S60 R
Volvo S60 '04
Renault 21 '91
Subaru Legacy '05
Mazda RX-7 '93
Renault 5 '84
Previous:
440 2 litre, 440 Turbo, 460 Turbo, 480 Turbo x2, 854 T-5R, S40 T4, V40 T4, S70 T5 & R, V70 R x2, S60 R
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- 480 Newbie
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Re: losing power at high revs
do u think the problem might be with the knock sensor? it would be great i'd replace it and thats it... id be happy
- jamesy12345
- 480 Veteran
- Posts: 753
- Joined: Tue Apr 03, 2012 5:49 am
- Location: Durham, England
Re: losing power at high revs
I have no idea mate, it could be that but there are lots of different things it could be also. I was just trying to give a suggestion.
Current:
Volvo S60 '04
Renault 21 '91
Subaru Legacy '05
Mazda RX-7 '93
Renault 5 '84
Previous:
440 2 litre, 440 Turbo, 460 Turbo, 480 Turbo x2, 854 T-5R, S40 T4, V40 T4, S70 T5 & R, V70 R x2, S60 R
Volvo S60 '04
Renault 21 '91
Subaru Legacy '05
Mazda RX-7 '93
Renault 5 '84
Previous:
440 2 litre, 440 Turbo, 460 Turbo, 480 Turbo x2, 854 T-5R, S40 T4, V40 T4, S70 T5 & R, V70 R x2, S60 R