UPDATE: After I had everything disconnected and not finding anything wrong, I plugged the ECU and wiring back in, reconnected the battery, turned the car on and the throttle is working perfectly. Took it for a drive and its running perfect. Very frustrating to be honest. I would have rather found a ...

A couple things come to mind. As far as the throttle errors, you may have a failure of the wiring between the throttle body and the ECU. That’s a fairly common problem especially the connector at the throttle body end, however a bad connection at the ECU end is possible - that one happened to me. A...

Thanks for the reply. I forgot to mention that we removed the a bunch of stuff to triple check connections and found a hose under the intake manifold that was disconnected. We reconnected it, but I haven’t tested idle since, so that might be okay now. As for the wiring, I was really hoping you would...

Hi. I have a 2005 Volvo V70 with a 2.4L non-turbo. I purchased this vehicle with a bad engine and has the engine replaced with a good, low mile, used engine. The car is extremely clean and looks to be taken care of. The engine fires up and sounds good. The idle is around 1100rpm. If you depress the ...