XC70 Stalled when Driving, very hard to start
#1
XC70 Stalled when Driving, very hard to start
I have had a P0172 CEL code for a while now, but the car has been running fine.... until now. I have read through the forums on this code and will be looking carefully for vacuum leaks and will replace the short term O2 sensor. From all that I have not heard anything about this problem actually causing the car to die, which is what has happened to me multiple times now. I have been lucky to get it started the last couple times, cranking over and over and having to floor the accelerator to get it to start. I can hear the fuel pump kicking on so I think it is getting fuel. Could a bad O2 sensor cause this behavior?
#7
I inspected the fuel pump relay today and it looked perfect, no cracks in the solder or any other perceivable problems. Even when I was having difficulty starting the car I could still hear the fuel pump kicking on when the key was turned. Should I go ahead with the replacement of the O2 sensor? I agree that it seems like the car isn't getting fuel, or maybe it is getting too much. Could a faulty O2 sensor cause this? Any other suggestions would be appreciated. Thanks.
Drew
Drew
#8
#9
When it dies it does not stutter. It simply shuts off, power steering goes, etc. It first occurred when I was doing about 45 and deccelerated. It started right back up. Later that day it had a small "hiccup" when slowing down and taking a right, but kept running. After parking I tried to start two hours later and it wouldn't start.
#13
#15
#18
The tune up kit from fcpgroton arrived today and I replaced the plugs, wires, rotor, and distributor. In order to do so I removed the air cleaner. After replacing everything, I started up the car without the air cleaner hooked up in case I needed access still. The car was running pretty rough at idle still, and now it generate a code of p0301 cylinder1 misfire instead of cylinder 3 misfire. I am kinda lost at this point. I took a look at the vacuum lines, but didn't have much light left. I will take another look tomorrow. Any suggestions would be appreciated.
#20
Sorry for the long gap... I finally got to take a vacation. I have checked all the wires and they are routed correctly. I was able to drive the car around for a bit without it dying, but I ended up with a P0300 code - random/multiple cylinder misfire. I listened under the hood while it was running and intermittently I could hear a tapping noise and pinpointed it to the vacuum can. When I touch it I could feel the tapping too. I have looked closely and am not able to find any vacuum leaks. Could this tapping be a result of a misfire or is it a cause? I have not had time to run the compression test. Is it possible that the coil is going bad intermittently? I have only experienced it either working or not in the past on other cars. Also, would it be worthwhile to replace the fuel filter in case it is a fuel issue. What about injectors? I guess I am wondering what order I should be checking all of these things. I am trying not to simply throw parts at this. Any suggestions would be appreciated. Thanks.