Nissan Repair Questions? Ask a Mechanic for Answers ASAP
hey there, thanks for the question.
So what are saying by it "won't advance"
are you referring to the fact that it won't accelerate? or won't build RPM's? or will it not move at all?
Does the engine actually stall out when this happens? or does it continue to idle fine, but won't accelerate?
Do you know what trouble codes were present when it was scanned?
Codes would be extremely helpful at this point, but since you have none I can tell you a couple similar situations I have seen and what you can do to help find out which one best suits your predicament.
If the engine sometimes stalls, but will not build RPMS when this happens. This is a good indication of a MAF problem. If it falls out of spec it will cause the fuel trims to be dramatically off and bog severely to where you can't rev up the engine.
Now if the vehicle won't move, but you can still rev the engine fine in all gears, then your looking at a transmission issue. Could be electrical causing a fail-safe condition.
Lastly, if the engine will still attempt to rev, but the RPMS seem erratic and jumpy and the engine just runs poorly all together. You need to inspect the distributor. Sometimes the shaft seal will leak on them and allow oil to slowly seem into the distridutor when driving. This will cause issues with the cam sensor in the distributor.
Best place to start unfortunately is either by see what all you CAN and can't do when it happens or to scan for codes when it happens.
If you run into any more questions later or get the codes from the mechanic and would like another opinion afterwards let me know.
I will be happy to help.
Hey there, i tried to respond to your original question the day you posted it, but it said CLOSED.
Wasn't sure if you asked customer service to close it or what.
Let me know if you still need help.