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740SE - No Power Above 2500 RPM - this occurs inconsistently 700 1991

posted by  jearlcalkins on  Sat Feb 19 14:36 CST 2005
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I just bought my first VOLVO, a 91' 740SE (turbo) and moved it from a warm San Antonio, TX to 8000' and the cold of Evergreen, CO.

Sometimes, if the outside temp is below 40 degrees F I don't develop power over 2500 RPM. The car always starts, idles smoothly, but sometimes I can't get over 2500 rpm, and in neutral it's difficult to rev above 2800 rpm.

If I'm experiencing this issue, I'll warm the engine up for 5 minutes, turn off the ignition, restart the engine and sometimes the power symptons are completely gone. Other times after restart, the symptons are better, but I can't get the engine over 3500 rpm.

Other hints and attempts to fix the problem
* very average gas mileage ... ~20 mpg on the highway
* power isn't that great for a turbo, 0 to 40 mph is very average
* Replaced the fuel filter
* Replaced the fpr (fuel pressure regulator)

Thanks for any help!






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