"Peformance Reduced" XC 70 2001

tinytim · Post by **tinytim** » 11 Jul 2009, 11:42

Hi all-

About 7 months ago my XC 70 2.4 T started idiling extremley erratic. I was advised to take of the throttle body under the inlet manifold and give it a clean. I did this and it worked like a charm. Last week on a long trip it started doing the samething with the idiling. So i decided to remove the throttle body again and give it a good clean again. This time however i decided to replace the steel gasket between the manifold and the throttle body(which i had not done before) and with genuine volvo gasket. I really gave the throttle body a good clean this time and replaced some of the water and air pipes. I put a new gasket between the manifold and the head. when i started the car it is now even worse. A "performance reduced" message comes into the display window and i cannot drive the car. I put my foot flat on the peddle and the car only revs upto 2000rpm. I cannot drive the car and the idiling is really bad now. It sound like it is not running on all cylinders when it idles

Does anyone have any suggestions? i know that i will have to have a diagnostics done but i am just wandering if i am not missing something obvious?

Thank you

Post by **velorider** » 11 Jul 2009, 17:59

Sounds like you may have an ETM problem. The problem is related to contacts on the throttle body. Your cleaning may have exacerbated.

https://www.matthewsvolvosite.com/volvo- ... le-fiasco/

tinytim · Post by **tinytim** » 18 Jul 2009, 04:25

Thank you so much, this information was very valuable.

Wobbley · Post by **Wobbley** » 26 Jul 2009, 21:57

That happened to me 2 years ago. I was driving to an appointment and the car just dropped all its power. I could only get it to 1500 or 2000 rpm's, I slowly drove it to the dealer (expensive, but I was desperate) and they saw that the throttle body was covered in a recall. They replaced it for free. But in the process turbo valve got messed up and it was a year until I figured out that was why the rest of my power went south. The dealership may be able to replace it for free. I don't believe it is tied to the regular factory warranty.