HHR SS Shutting off / Running rough for about the first few minutes each morning ?'s
Thread Starter
Senior Member
Joined: 10-19-2011
Posts: 1,553
From: N.Y.
HHR SS Shutting off / Running rough for about the first few minutes each morning ?'s
HHR SS Shutting off / Running rough for about the first few minutes each morning ?'s
well I did have some other info on another thread concerning a possible air filter issue and Mass air flow sensor issue.
Thought I would be better to start another thread since most have looked at the other thread when there was not an issue.
here is the original thread on K&n air filters
https://www.chevyhhr.net/forums/2-0l-performance-tech-46/what-my-chances-getting-code-k-n-filter-46411/
Now for two days in a row the car will start up fine run through its high idle cycle then I can back out of my driveway and everything seems fine.
But then about a couple seconds after I start to accelerate some where around 10 mph the car starts bucking (like its misfiring) then it will usually shut off. After restarting with a key off key on the car will run better but still skips here and there finally after a few minutes when it hits over about 190 degrees it will seem to run fine but I can still feel a skip every few miles on the highway.
it has now officially turned the check engine light on.
and is also showing a few misfire codes.
I did clean the MAF sensor again last night and it ran just fine afterwards until this morning.
the code that turned the check engine light on is
P101 Mass or Volume Air Flow Circuit Range/Performance Problem
it is also showing pending
P106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
P300Random Multiple cylinder misfire detected
P301 Cylinder 1 misfire detected
P303 Cylinder 3 misfire detected
P304 Cylinder 4 Misfire detected
It is now at the dealers but they said they may not be able to look at it until Monday.
Any ideas what I am looking at here Did the Mass air flow sensor actually go bad after using a K&n filter. I would not think that is the case
well I did have some other info on another thread concerning a possible air filter issue and Mass air flow sensor issue.
Thought I would be better to start another thread since most have looked at the other thread when there was not an issue.
here is the original thread on K&n air filters
https://www.chevyhhr.net/forums/2-0l-performance-tech-46/what-my-chances-getting-code-k-n-filter-46411/
Now for two days in a row the car will start up fine run through its high idle cycle then I can back out of my driveway and everything seems fine.
But then about a couple seconds after I start to accelerate some where around 10 mph the car starts bucking (like its misfiring) then it will usually shut off. After restarting with a key off key on the car will run better but still skips here and there finally after a few minutes when it hits over about 190 degrees it will seem to run fine but I can still feel a skip every few miles on the highway.
it has now officially turned the check engine light on.
and is also showing a few misfire codes.
I did clean the MAF sensor again last night and it ran just fine afterwards until this morning.
the code that turned the check engine light on is
P101 Mass or Volume Air Flow Circuit Range/Performance Problem
it is also showing pending
P106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
P300Random Multiple cylinder misfire detected
P301 Cylinder 1 misfire detected
P303 Cylinder 3 misfire detected
P304 Cylinder 4 Misfire detected
It is now at the dealers but they said they may not be able to look at it until Monday.
Any ideas what I am looking at here Did the Mass air flow sensor actually go bad after using a K&n filter. I would not think that is the case
Senior Member
Joined: 11-05-2010
Posts: 1,492
From: Detroit, Michigan USA
HHR SS Shutting off / Running rough for about the first few minutes each morning ?'s
well I did have some other info on another thread concerning a possible air filter issue and Mass air flow sensor issue.
Thought I would be better to start another thread since most have looked at the other thread when there was not an issue.
here is the original thread on K&n air filters
https://www.chevyhhr.net/forums/showthread.php?t=46411
Now for two days in a row the car will start up fine run through its high idle cycle then I can back out of my driveway and everything seems fine.
But then about a couple seconds after I start to accelerate some where around 10 mph the car starts bucking (like its misfiring) then it will usually shut off. After restarting with a key off key on the car will run better but still skips here and there finally after a few minutes when it hits over about 190 degrees it will seem to run fine but I can still feel a skip every few miles on the highway.
it has now officially turned the check engine light on.
and is also showing a few misfire codes.
I did clean the MAF sensor again last night and it ran just fine afterwards until this morning.
the code that turned the check engine light on is
P101 Mass or Volume Air Flow Circuit Range/Performance Problem
it is also showing pending
P106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
P300Random Multiple cylinder misfire detected
P301 Cylinder 1 misfire detected
P303 Cylinder 3 misfire detected
P304 Cylinder 4 Misfire detected
Attachment 14891
It is now at the dealers but they said they may not be able to look at it until Monday.
Any ideas what I am looking at here Did the Mass air flow sensor actually go bad after using a K&n filter. I would not think that is the case
well I did have some other info on another thread concerning a possible air filter issue and Mass air flow sensor issue.
Thought I would be better to start another thread since most have looked at the other thread when there was not an issue.
here is the original thread on K&n air filters
https://www.chevyhhr.net/forums/showthread.php?t=46411
Now for two days in a row the car will start up fine run through its high idle cycle then I can back out of my driveway and everything seems fine.
But then about a couple seconds after I start to accelerate some where around 10 mph the car starts bucking (like its misfiring) then it will usually shut off. After restarting with a key off key on the car will run better but still skips here and there finally after a few minutes when it hits over about 190 degrees it will seem to run fine but I can still feel a skip every few miles on the highway.
it has now officially turned the check engine light on.
and is also showing a few misfire codes.
I did clean the MAF sensor again last night and it ran just fine afterwards until this morning.
the code that turned the check engine light on is
P101 Mass or Volume Air Flow Circuit Range/Performance Problem
it is also showing pending
P106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
P300Random Multiple cylinder misfire detected
P301 Cylinder 1 misfire detected
P303 Cylinder 3 misfire detected
P304 Cylinder 4 Misfire detected
Attachment 14891
It is now at the dealers but they said they may not be able to look at it until Monday.
Any ideas what I am looking at here Did the Mass air flow sensor actually go bad after using a K&n filter. I would not think that is the case
I commented on your other post but I would like to get involved. Could you please private message me your name, address, phone number, vehicle identification number, and current mileage?
Thanks,
Jessica L.
Chevrolet Customer Care
Thread Starter
Senior Member
Joined: 10-19-2011
Posts: 1,553
From: N.Y.
Dealer called they pulled all the codes tech drove car and it was still warm and ran ok for the most part.
sending me home with the car since they cannot reproduce the problem?
Even though it was recorded.
So I have to bring it back drop it off a day ahead of time so its cold and they can record the problem.
I thought they could or would at least test the MAF with there tech 2 machine.
sending me home with the car since they cannot reproduce the problem?
Even though it was recorded.
So I have to bring it back drop it off a day ahead of time so its cold and they can record the problem.
I thought they could or would at least test the MAF with there tech 2 machine.
Thread Starter
Senior Member
Joined: 10-19-2011
Posts: 1,553
From: N.Y.
Here is a link to a similar issue
unfortunately it sounds like it was never figured out.
https://www.chevyhhr.net/forums/problems-service-repairs-42/hhr-ss-shop-again-34556/
unfortunately it sounds like it was never figured out.
https://www.chevyhhr.net/forums/problems-service-repairs-42/hhr-ss-shop-again-34556/
Platinum Member
Joined: 04-09-2006
Posts: 7,043
From: Vancouver, BC, Canada
Bigjacksauto - I did a search for bobiroc's postings after reading the link you posted that kinda deadended like you said. However I found a posting by bobiroc that suggested to another person that was having similar problems, that he finally got his problems resolved by finially getting the dealer to solder the connections as many others have done. And his problems were fixed.
Try this: https://www.chevyhhr.net/forums/ss-specific-service-issues-repairs-61/drivability-problems-37846/
And post 6: https://www.chevyhhr.net/forums/show...727#post575727
Try this: https://www.chevyhhr.net/forums/ss-specific-service-issues-repairs-61/drivability-problems-37846/
And post 6: https://www.chevyhhr.net/forums/show...727#post575727
Thread Starter
Senior Member
Joined: 10-19-2011
Posts: 1,553
From: N.Y.
whopper thanks for checking that.
Mine has the plug and play non cut kit but glad you brought this up
one more thing to check that could be it.
Although now it is running poorly and continually is showing a p101 mass air flow pending code.
Still surprised they told me to drive it home and drive it back.
I am not sure it will make it back without being towed since once its cold it acts up badly.
Mine has the plug and play non cut kit but glad you brought this up
one more thing to check that could be it.
Although now it is running poorly and continually is showing a p101 mass air flow pending code.
Still surprised they told me to drive it home and drive it back.
I am not sure it will make it back without being towed since once its cold it acts up badly.
Thread Starter
Senior Member
Joined: 10-19-2011
Posts: 1,553
From: N.Y.
Its alive
Well I did not want to post this sooner and Jinx myself.
After having my car run worse and worse starting Friday Night.
I figured enough was enough and the car was not safe to be able to be driven to the dealer.
Checked everything I could think of to keep the story short.
did a quick boost test
checked the BPV
Checked Plugs
Checked a few other things
Pulled and cleaned Tmap Sensors
The tape around the lower tmap sensor looked to be in great shape
did not look like there was any chance of there being an issue underneath.
Pulled the tape off and to my surprise every one of the four wires insulation had
been broken open.
At this point I cannot be sure if there was moisture inside the tape and wires
or if possiblly the wires where contacting each other at times but one thing can be sure
the engine was hitting the wires at times.
Cleaned the wires sealed them up with Plastidip
and taped up with 3m tape.
Pulled front bumper off, moved intercooler 7/16" forward and cut the charge hose about 1/2" to pull the tmap sensor forward more.I am going to look into possibly rotating the sensor 180 degrees if I have any future clearance problems
Did a battery cable pull and normally any time I have ever done a battery pull in the past the car always takes 20-30 seconds before it starts.
This time it started up immediatley and has been running great ever since.
No codes no pending codes
Air fuel ratios look good from what I can tell etc.
I would like to take this time to thank everyone on this site for all your help with this and for posting up info in the past as well such as moving the intercooler forward and cutting the pipe for clearance.Without the help of you guys and this site as well as a couple other sites, I might have been stuck with my car in and out of the dealer until I gave up.
But with your help it's alive !
hopefully for quite a while.
After having my car run worse and worse starting Friday Night.
I figured enough was enough and the car was not safe to be able to be driven to the dealer.
Checked everything I could think of to keep the story short.
did a quick boost test
checked the BPV
Checked Plugs
Checked a few other things
Pulled and cleaned Tmap Sensors
The tape around the lower tmap sensor looked to be in great shape
did not look like there was any chance of there being an issue underneath.
Pulled the tape off and to my surprise every one of the four wires insulation had
been broken open.
At this point I cannot be sure if there was moisture inside the tape and wires
or if possiblly the wires where contacting each other at times but one thing can be sure
the engine was hitting the wires at times.
Cleaned the wires sealed them up with Plastidip
and taped up with 3m tape.Pulled front bumper off, moved intercooler 7/16" forward and cut the charge hose about 1/2" to pull the tmap sensor forward more.I am going to look into possibly rotating the sensor 180 degrees if I have any future clearance problems
Did a battery cable pull and normally any time I have ever done a battery pull in the past the car always takes 20-30 seconds before it starts.
This time it started up immediatley and has been running great ever since.
No codes no pending codes
Air fuel ratios look good from what I can tell etc.
I would like to take this time to thank everyone on this site for all your help with this and for posting up info in the past as well such as moving the intercooler forward and cutting the pipe for clearance.Without the help of you guys and this site as well as a couple other sites, I might have been stuck with my car in and out of the dealer until I gave up.
But with your help it's alive !
hopefully for quite a while.
Platinum Member
Joined: 12-06-2009
Posts: 11,718
From: Alabama
Uh Oh!
So is this the 1st time we've heard of an issue with the plug-in harness?
Bigjack. Is there a way to tell why this happened to your's? Was it hitting the AC compressor?
I've checked my wiring every time I'm under the car. Mine is no where near the compressor, but I do have the lower hose pushed forward with a bracket.
Fwiw. It might be a good idea to pull the Tmap sensor out and check the
O-ring for any damage.
So is this the 1st time we've heard of an issue with the plug-in harness?
Bigjack. Is there a way to tell why this happened to your's? Was it hitting the AC compressor?
I've checked my wiring every time I'm under the car. Mine is no where near the compressor, but I do have the lower hose pushed forward with a bracket.
Fwiw. It might be a good idea to pull the Tmap sensor out and check the
O-ring for any damage.
Thread Starter
Senior Member
Joined: 10-19-2011
Posts: 1,553
From: N.Y.
Definentley not the harnesses fault.
And there was only about a 1/2“ max between sensor and account pump
No doubt at all the motor was hitting the wiring right near the tmap sensor.
I had the bracket but don't think it helped much
Now that the hose is shortened and intercooler moved forward hope I am ok
And there was only about a 1/2“ max between sensor and account pump
No doubt at all the motor was hitting the wiring right near the tmap sensor.
I had the bracket but don't think it helped much
Now that the hose is shortened and intercooler moved forward hope I am ok