of 15

Repair Database Tag: ecu

October 23, 2013

Does my Volvo have Motronic 4.4?

Does my Volvo have Motronic 4.4?

Does my Volvo have Motronic 4.4?
July 26, 2013

Opinions on Manual Boost Control

In response to a request for opinions on how to safely boost a V70, MVS user pkplok posted this link which is specifically about boosting Volkswagens but should work for Volvos as well. Additionally, user SweedSpeed posted the diagram below which shows how to allow the ECU/solenoid to regulate boost in lower gears while utilizing […]

Opinions on Manual Boost Control
June 26, 2013

“628″ R ECUs and 850s

So, I recently installed a 628 ECU and it works great. It feels like I have a little more boost everywhere, not just for 7 seconds, 30 seconds, or whatever the literature claims. This is in a MY94 850.

“628″ R ECUs and 850s
January 14, 2013

Fuel Cutoff w/ Stock ECU + MBC

Click through for a video example of the Volvo ECU cutting fuel after the parameters go off the map. Now that ambient air temperatures are very low, 9°F (-12°C), the air-fuel mixture is so dense that it’s going off the ECU’s map, and my Volvo’s computer is shutting down the party. It happens at low speeds […]

Fuel Cutoff w/ Stock ECU + MBC
December 19, 2012

How to access ECM & TCM on 850, S70, V70, XC70, C70

How to remove ECU and TCU Modules MVS Forum member gchelidze tells us in text and (24!) photos how to access your ECU and TCU modules from under your Volvo 850, S70, V70, XC70, C70′s hood. He writes: “WARNING: I have done this procedure twice – once with battery lines connected and once with negative line […]

How to access ECM & TCM on 850, S70, V70, XC70, C70