I have a new ( to me) 2000 Volvo s80 2.9 and have been having rough idle, acceleration problems and car sometimes shutting off. Also check engine light for the following codes:

p0103 MAF
p0118 Engine coolant temp. sensor
p0452 evap leak
p0113 air temp sensor
p0134 o2 sensor
0154 o2 sensor (no activity)

Along with all of those issues my temperature gauge does not work at all. Now, I have replaced maf, coolant sensor both o2 sensors along with a stage 0. Also I have sent off ETM to BBA to get remanufactured and then had the dealer reload the software and I got nowhere. Car drives slightly better but none of the codes got cured and the vehicle still acts the same way as when I first got started.

Any suggestion as to where I can go from here?

 

Better days are ahead. I own a 2000 volvo s80 t6 turbo geartronic transmission, 177k. Each year I've owned her the repairs get progressively more involved. Last week I had codes read at advance auto. Pulled same codes as you have listed. Prior to this, I had a no start problem that couldn't be fixed by battery disconnect. The tube supplying air to the ETM holds 2 sensors. The sensor in the tube closest to ETM lost ground causing car to not start or hunt as its called. Replaced sensor lead wires, cleaned that sensor, ETM, new gasket. Also, forum reports state clogged pcv, pcv tubing, pcv to engine block blocked ports, can cause our idle symptoms. I got new pcv works. Forum reports also state bad maf or maf other then bosch will cause our symptoms. Cleaned mine no improvement. Disconnected maf while car rough idling, no difference. Forums state, maf is not the problem then. But wait there's more. If your air filter box isnt fastened securely, mines missing a clip, can cause our symptoms. booooo! Our symptoms are out there. Weekend coming I'll have a new air filter box cover and let you know if I'm being haunted. If this doesn't do the trick I'm thinking perhaps the sensor I fixed new wiring to, is faulty. Like you, I replaced cleaned and or repaired all, to clear codes and their still watching me. I found out today, I don't have cruise control. My daughter tells me has been working, not working before. Forums state, pull cruise control fuse, wait 1 minute, replace. Kinda like lock, unlock, door lock thingy. Haven't done that yet. American cars, a bad o2 sensor will make car idle bad. Volvo too? I plan on taking DMM o2 readings also. I plan on triple checking all pcv and turbo tube connections. Forum information I've gathered I'm passing on to you hoping it helps. Let you, me, know something.

 

Well , I'm getting no reading from the engine temp sensor and the cluster temp gauge doesn't show anything. Considering that all the sensors are riding on the same harness that that's my problem. Either the harness, bad ground in the harness or the Ecu. Any thoughts?