dahubb, 93 850, Sac. Ca. Well, I think this will hopefully be my final update on this problem of mine. My issue with loss of power never did seem like a fuel issue. After changing many things that had never been changed in 174,000 miles finally changed the ignition coil. I had a feeling it might be ...

93 850 Well,Installed new coolant sensor. Drove about 90 miles before car failed with same problem. Also got the check engine code 411.The throttle body sensor has already been changed.Running out of ideas. I would think if I had a vacum leak it would be constant. Could I have a problem with the com...

93 850,SAC. CA. Well I ordered and installed new MAF sensor,[ from dealer ]. Drove car around town for 6 days. Some freeway driving.Drove 100 miles to 6000 elevation and back.Car ran great. 28.5 mpg Thought problem solve till I drove early in morning onto freeway and incountered same problem of loss...

thanks jblackburn for reply, I thought that I might have got that 121 code when I was testing maf by unplugging plugging back in maf. I think I might have caused the error because car was running. Same old story wanna be sure it is maf before I spend the money. Question, will faulty maf's cause inte...

Hello to all. I have been using the posts on this site for the last 6 weeks concerning loss of engine power,stalling and engine reveing, I have learned alot.I guess not enough I now have brain freeze concerning this problem. History. 93 850 174000 on car. Started with engine missing while at idle in...

I am back. Volvo ECC is now operational. I did order transistor from Digi-Key. Nice folks but it is very hard to get the correct transistor if you (me ) do not have the knowledge about them. I used transistor part number from post on BrickBoard titled ( How to repair power stage yourself) Posted by ...

UPDATE. Found a place that has the correct transistor for repair. Site is www. digikey.com $ 3.05 each Trying to find transistor on the site is difficult, so I just called them and they found the transister by part number. I am waiting for transistors to arrive so I will wait to post results. For mo...

Thanks again Lee.Spent today trying to find a vendor who might have the correct transistor for the repair of the power stage. Did find information at Brickboard. the transistor used was STP140NF55 N-CHANNEL, ORIGINAL PART WAS 2SK1423. SO FAR HAVE BEEN TO MANY SITES with no luck. My original transist...

Lee, thanks for all your help. I grounded blue wire at power stage and fan ran at full power. Sooo by reading all these post on this ECC issue code 418, The power stage should be bad, and need replacing. I will look at other posts to see where is a good place to purchase one. If someone has informat...

Quick question. To test power stage I need to ground blue wire to fan. So I assumming I do that at fan and that is below glove box?
thanks Dahubb