What could it be?
What could it be?
2001 Max SE, runs excellent, no codes, just perfect. Have a slight problem, the car while stop and on D, make like its going to turn off, but it doesn't. It does it at temperature but only when stopped. Revs perfect and it idle the way it should, what could it be?
Jason,Or Michael Mayer,la llorona whatevs....
was a good one.... thanks for the laugh 
2001 max
VQ30DE: you can clean the throttle body (mechanical)
VQ35DE: i will not recommend cleaning the throttle body assembly. (electronic)
Do not move the butterfly.
Hook up your vehicle to OBD II scan tool with live feed to detect IMPENDING errror code.
VQ35DE: i will not recommend cleaning the throttle body assembly. (electronic)
Do not move the butterfly.
Hook up your vehicle to OBD II scan tool with live feed to detect IMPENDING errror code.
Senior Member
Joined: May 2013
Posts: 1,440
From: Snakeden Branch, VA
^^ Checking/cleaning TB is a good idea, even though when I looked at mine it was pristine clean and I doubt many 5th gens have much dirt there due to oil issues, unlike the 5.5 gens..
I would advise you do two things, hook up a live scanner and log some data, check your vacuum at idle, should be high.
Then check your PCV valve, mine was semi-clogged and would exhibit the symptom you describe until I changed it...specifically at temps (cuz it stuck when it got hot, it would work fairly OK when it was cold). It would cause low idle vacuum, especially on decelerations and coming to a stop, and then would drop the idle down a bit like it was gonna shut off, but never did and came back up..
I would advise you do two things, hook up a live scanner and log some data, check your vacuum at idle, should be high.
Then check your PCV valve, mine was semi-clogged and would exhibit the symptom you describe until I changed it...specifically at temps (cuz it stuck when it got hot, it would work fairly OK when it was cold). It would cause low idle vacuum, especially on decelerations and coming to a stop, and then would drop the idle down a bit like it was gonna shut off, but never did and came back up..
^^ Checking/cleaning TB is a good idea, even though when I looked at mine it was pristine clean and I doubt many 5th gens have much dirt there due to oil issues, unlike the 5.5 gens..
I would advise you do two things, hook up a live scanner and log some data, check your vacuum at idle, should be high.
Then check your PCV valve, mine was semi-clogged and would exhibit the symptom you describe until I changed it...specifically at temps (cuz it stuck when it got hot, it would work fairly OK when it was cold). It would cause low idle vacuum, especially on decelerations and coming to a stop, and then would drop the idle down a bit like it was gonna shut off, but never did and came back up..
I would advise you do two things, hook up a live scanner and log some data, check your vacuum at idle, should be high.
Then check your PCV valve, mine was semi-clogged and would exhibit the symptom you describe until I changed it...specifically at temps (cuz it stuck when it got hot, it would work fairly OK when it was cold). It would cause low idle vacuum, especially on decelerations and coming to a stop, and then would drop the idle down a bit like it was gonna shut off, but never did and came back up..
Senior Member
Joined: May 2013
Posts: 1,440
From: Snakeden Branch, VA
Only thing I can add for now is this = not sure what brand PCV valve u got, but most aftermarket valves dont fit all the way in the hole...I got one from CarQuest/Napa initially but ended up going for an OEM one, since its so cheap anyway...
Good luck to you!
Word. Its a crap day here in VA too, hopefully rain will stop later so u can pluck that thing in there..
Only thing I can add for now is this = not sure what brand PCV valve u got, but most aftermarket valves dont fit all the way in the hole...I got one from CarQuest/Napa initially but ended up going for an OEM one, since its so cheap anyway...
Good luck to you!
Only thing I can add for now is this = not sure what brand PCV valve u got, but most aftermarket valves dont fit all the way in the hole...I got one from CarQuest/Napa initially but ended up going for an OEM one, since its so cheap anyway...
Good luck to you!
Senior Member
Joined: May 2013
Posts: 1,440
From: Snakeden Branch, VA
I hear that. I'm about 90% positive the duralast will not fit all the way...but I guess you'll find out soon enough lolz
Got me on the tints.. 
good one.. I just finished removing the passenger side front and rear tints. Will do the driver side tomorrow, will pay to remove the back and install new tints next weekend....
good one.. I just finished removing the passenger side front and rear tints. Will do the driver side tomorrow, will pay to remove the back and install new tints next weekend....
how long have you been in the philly area? always thought u were in FL
PCV, and throttle body are good suggestions, keep us posted,
i swear I had this same symptom one time, stoped at a red light and it almost shut off randomly at idle, and then didnt.
only happened once or twice tho.
PCV, and throttle body are good suggestions, keep us posted,
i swear I had this same symptom one time, stoped at a red light and it almost shut off randomly at idle, and then didnt.
only happened once or twice tho.
how long have you been in the philly area? always thought u were in FL
PCV, and throttle body are good suggestions, keep us posted,
i swear I had this same symptom one time, stoped at a red light and it almost shut off randomly at idle, and then didnt.
only happened once or twice tho.
PCV, and throttle body are good suggestions, keep us posted,
i swear I had this same symptom one time, stoped at a red light and it almost shut off randomly at idle, and then didnt.
only happened once or twice tho.
Cleaned the TB and replaced the PCV valve last night will test the car later today and see if the problem is gone.
my car shut off in the middle of driving (possibly coasting) on the highway. lost power brakes, power steering everything. sat 5 mins started up like nothing happened.
im really sketched out by it, almost want to not drive it anymore untill i have a reason on why it did that. so I know how u feel.
have you looked into IACV idle air control valve and CPS crank position sensor?
those were the two biggest things that related to me with this random shut off and "almost shut" off.
im really sketched out by it, almost want to not drive it anymore untill i have a reason on why it did that. so I know how u feel.
have you looked into IACV idle air control valve and CPS crank position sensor?
those were the two biggest things that related to me with this random shut off and "almost shut" off.
my car shut off in the middle of driving (possibly coasting) on the highway. lost power brakes, power steering everything. sat 5 mins started up like nothing happened.
im really sketched out by it, almost want to not drive it anymore untill i have a reason on why it did that. so I know how u feel.
have you looked into IACV idle air control valve and CPS crank position sensor?
those were the two biggest things that related to me with this random shut off and "almost shut" off.
im really sketched out by it, almost want to not drive it anymore untill i have a reason on why it did that. so I know how u feel.
have you looked into IACV idle air control valve and CPS crank position sensor?
those were the two biggest things that related to me with this random shut off and "almost shut" off.
The weird part of this thread is that it runs and idle good! But when stopped in "D"(Idle) you have an issue! Check your coilpacks for missing using a timing light with the inductive pickup around the electrical harness!
finally the car shows a code P01320. A coil has to be giving up. Have to run some test to find whose the one making the issue. I cleared the code will see if it comes back again.