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Exactly that happened. They just suggested that I have to search for help from some other performance workshops as my car has been modified. The only modification it has on board is nitrous which is always switched off. I never ever use it. Therefore I went to ask for help from some workshop who are doing just European car. They also couldn't find any problems with the car as at this stage the car was working just fine.
Anyway even though I don't have much of experience in the cars I went online and done some search. I found anything about the vacuum leak problem; therefore I opened a bonnet and start searching for anything unusual. Today I spent at least 2 hours trying to track down this problem. Finally I came across some hose that was cracked. This hose is coming out from the metal part where Air Filter ends located on the right hand side behind the engine and goes toward the front of the engine. It is quite difficult to track down where it ends because there are some other hoses over this one and probably this one ends somewhere into the engine, but where I am not able to answer. Actually the problem is with the little hose (not longer than 4 cm) that goes around the hose that comes out from the metal part of the car. This little hose that around the longer one seems to be melted and there is a big hole in it. Then I tried to touch the hose that was going straight through the little hose, and what I found is that there is some sort of disconnection between this hose. Can you please advise me what this hose is for and how it can be fixed? I am not so sure if this is causing the problem, but I thought that I should let you know so you can help me!
Once again thank you so much and I really appreciate all your time and devotion in answering all my questions,
George
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Thank you so much for answering my question. In addition I want to ask you why this is not a constant problem and it happens from time to time. At the moment the car is behaving badly, but maybe at some stage during the next week its going to work fine. Also vacuum repair is it costly does fix and what type of work should be undertaken? I know that you are limited with the time, but you wouldn't even imagine how good would be if I get any extra information in relation to this problem.
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Dear Sir,
I have Volvo 1997 S70 T5. My car is experiencing serious idling problems. This problem occurs from time to time. Firstly it seems that the engine is losing a power when my foot is on the acceleration pad, and whenever I release my foot off the pad, the engine is doing instant cut offs. Also when the car is not moving, the revolutions go up and down and it looks that the car will switch itself down. Mostly when the engine behaving badly, my vacuum idle shows the significant increase of vacuum pressure. In normal circumstances it supposed to be around 20 but when the engine is not working properly it is on 24 or 25. I have checked this with Volvo dealer but they couldn't find any possible faulty codes in the computer.
In addition every time when I press my brake pad and want to stop a car at the speed of 5-10kmh the idling problem occurs. At that time revolutions are around 900 but then for 2 sec they go down to 500 and back to 700, and again down to 500 till it finally go back to 900.
Could this relate to electrical or mechanical problem? Air Flow, Vacuume problems?
I would be so thankful if you can give me any recommendations.
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I suprised to hear you didn't get any computer codes. GIven that, I would guess a vacuum problem, which might be something the computer won't detect. A leaky vacuum might cause the engine to attempt to adjust the fuel mixture and make the engine run rich, causing the problems you talk about. I would have the vacuum system checked. Good luck!
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To look for a vacuum leak involves someone tracing the vacuum lines of the car looking for breaks. It isn't a complicated procedure, but does involve some time to do, which will be the most expensive thing. When the mechanics didn't find a computer code error, what did they suggest that you do? Did they just send you home?
AnswerBecause I've only got experience with the 240 series, I'm not going to be able to help much with the more specific questions. I recommend you go to www.brickboard.com and post your question. You'll be able to get responses from people who actually own your car. Good luck!
