Stalling While Driving
It's been a while...but I still have my brick!
My 1992 245 173k has been stalling lately while driving, while cruising at 40-60 mph. It had the occasional 2-second stumble without stalling, once every 300 miles or so, nothing bad, but last weekend it started stalling every 20 miles. Checked the fuses, waited 15 minutes, started right up, drove like a charm, stalled 20 miles later, same thing. I was away from home, took it to the nearest Volvo dealership the next day who could not reproduce this. Gas tank was near empty.
Filled it up and drove it home 250 miles without a hitch. I did keep the tank above half full, though.
I have since replaced the fuel pump relay hoping it will fix things but I won't know for a few hundred miles, all the while "waiting" to break down again. Joined AAA as I have to take it out of state twice this month. Makes me nervous.
Questions:
Does this sound like fuel pump relay? Or could it still be the fuel pumps? I don't hear any noise from the pumps other than the whoosh when I turn the ignition key. Volvo guys had it hooked up to a fuel pressure gauge, drove it 25 miles, fuel pressure was fine then.
Interestingly, per (scarce) records, the car had same problem "stalling while driving" in 2001 and 2004. AMM was replaced TWICE in 2001, as well as the fuel pump relay. In 2004, both fuel pumps, relay and regulator were replaced.
Another thing, related or unrelated, it seems to idle a little hesitant, especially in Park. Plus, OBD says error code 2-3-2, running too lean or rich/O2 sensor. Actually, it's been saying that for a while. Now, I have no idea when and if the O2 was ever changed. It has the heated one they are supposed to last 100k but for all I know it may still be the original. Could a bad O2 cause stalling or stumbling?
Recent work to the car (past two months): flame trap cleaning, new exhaust header pipe, two oil leaks fixed (dipstick tube, valve cover), tune up (plugs, wire, dist cap, air filter).
Thanks for any suggestions!
Modified by dagnelson at 8:27 PM 5-4-2009
It's been a while...but I still have my brick!
My 1992 245 173k has been stalling lately while driving, while cruising at 40-60 mph. It had the occasional 2-second stumble without stalling, once every 300 miles or so, nothing bad, but last weekend it started stalling every 20 miles. Checked the fuses, waited 15 minutes, started right up, drove like a charm, stalled 20 miles later, same thing. I was away from home, took it to the nearest Volvo dealership the next day who could not reproduce this. Gas tank was near empty.
Filled it up and drove it home 250 miles without a hitch. I did keep the tank above half full, though.
I have since replaced the fuel pump relay hoping it will fix things but I won't know for a few hundred miles, all the while "waiting" to break down again. Joined AAA as I have to take it out of state twice this month. Makes me nervous.
Questions:
Does this sound like fuel pump relay? Or could it still be the fuel pumps? I don't hear any noise from the pumps other than the whoosh when I turn the ignition key. Volvo guys had it hooked up to a fuel pressure gauge, drove it 25 miles, fuel pressure was fine then.
Interestingly, per (scarce) records, the car had same problem "stalling while driving" in 2001 and 2004. AMM was replaced TWICE in 2001, as well as the fuel pump relay. In 2004, both fuel pumps, relay and regulator were replaced.
Another thing, related or unrelated, it seems to idle a little hesitant, especially in Park. Plus, OBD says error code 2-3-2, running too lean or rich/O2 sensor. Actually, it's been saying that for a while. Now, I have no idea when and if the O2 was ever changed. It has the heated one they are supposed to last 100k but for all I know it may still be the original. Could a bad O2 cause stalling or stumbling?
Recent work to the car (past two months): flame trap cleaning, new exhaust header pipe, two oil leaks fixed (dipstick tube, valve cover), tune up (plugs, wire, dist cap, air filter).
Thanks for any suggestions!
Modified by dagnelson at 8:27 PM 5-4-2009