850 volvo ECM questions Topic is solved

gabewillwin · Post by **gabewillwin** » 07 Jul 2005, 14:00

Recently i wrote about an 850 with what seemed in the end to be a MAP sensor issue (rough idle, running too rich, occasional stalling), so i took the dar to be looked at and the problem was diagnosed as an ECM issue which i was quoted 180 bucks to fix. I am very mechanically savy and have done similar work on non volvos, so i ask Can i do this job for cheaper with out to much difficulty. Where can the sensor be found, and does it need any specail programming etc...any help is greatly appriciated.

Guest · Post by **Guest** » 07 Jul 2005, 15:51

What ECM issue? Replacement? $180 sounds cheap for a dealer replacement. Some people find used ones, but I'd expect that to be more than $180 too.

gabewillwin · Post by **gabewillwin** » 08 Jul 2005, 13:43

The exact words used by the tech were "ECM sensor" ( i dont know if that differes from the actual ECM). hope that helps..anyone even replace one?

White850Turbo · Post by **White850Turbo** » 09 Jul 2005, 06:18

ECM most often refers to the ECU (Electronic Control Unit), which costs over $1000. Come to think of it though, he could be referring to the engine coolant temp sensor. The symptoms do match. Get the tech to point out the part and/or give you a part number, so we can verify though.