1999 S70 running rough
 

My s70 has been running very rough. The car has absolutely no power. I can accelerate only in the higher rpms. At low rpms i am at a loss of power At constant throttle the car is very jumpy and idle is inconsistent/rough. When I first start the car it revs to about 3300rpm then slowly drops back down. I have cleaned my throttle body multiple times. It use to help for a little while, but now it is a very temporary fix. I am getting these codes p1053
p1108
p0442- I know this one is most likely my evap cannister j hose. I have ordered a replacement

p1620
p1017
p1032
p1031
p1026
p1017
p1021
Any help would be appreciated. I understand that one of these codes is for my ECM and could be signaling other codes. Does it sound like the ECM is the issue, or should I look more into a new ETM?

Man, that's like a Christmas tree. Oh, welcome to the forum.

I would reset the codes and see which comes back the soonest. Most likely the ETM is bad if it hasn't been changed within the past 24 months.

If you have not done a tune up, I'd start there and work yourself down... But first clear your codes, then do it, and it wouldn't be a bad idea to check all vaccum lines.

*bump*
 

I have a similar issue going on with my 1999 V70. Intermittent rough idle/loss of power and the following codes:
p1021
p1026
p1031
p1620
was wondering if the original poster resolved the issue and what what the issue?

My V70 drops idle to 500RPM when coming to a stop. Otherwise runs OK, good acceleration, solid RPMs on the highway.