Question about 1991 Volvo 740

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MY 1991 740 TURBO SEEMS TO BE CLOGGED

IF I TAKE OFF QUICK MY CAR WILL GET UP TO ABOUT 50MPH AND IT WILL NOT GO ANY FASTER UNLESS I LET UP OFF THE GAS PEDDAL P.S CAR DOES THIS AT VARIOUS HIGHWAY SPEEDS . I HAD A ENGINE FLUSH , TUNE-UP, EMISSIONS CLEANING STILL NO LUCK CAR HAS 110K MILES PLEASE HELP

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Hi,

Does not sound like a turbo lag or a boost issue. Might you want to check on your intake manifold or turbo in/out attachments specially the clamps for leaks. In some instances a defective (torn) air filter could also cause this.

Of course it would be best to consult an onsite qualified professional as it may have to do with your engine mapping.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on May 29, 2008

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I think turbo must be repaired or replaced.

Posted on May 29, 2008

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