Had my check engine light come today. I pushed the On-star button and ask for a diagonistic and was told it was from an "engine mis-fire" and should proceed cautiously to the nearest dealer. Gonna go to the GM dealer in town, if that not good enough I can go to a Chevy dealer in Muskogee. I'll keep you informed.

I have an appoinment at 8:30 in the morning tomorrow. The service guy at the GM dealer thought it might be the coil. They couldn't see the car till 2:00 tomorrow afternoon. I'll let you know what the verdict is.:confused:

I hope it's a quick fix!

Good luck.
Hope they get it fixed for you.

I'm sure they'll get the problem licked in no time! Besides, it's a day outta' the uniform!

I'm sure they'll get the problem licked in no time! Besides, it's a day outta' the uniform!
I'm here waiting in the service dept waiting room. The unifrom is not a prob because I'm on leave. Plus wearing a flight suit to work isn't too bad. They have an internet cafe(2 comps) for use in the waiting room. befor I leave they will have CHEVYHHR.NET as their home pages.:nuts:

That's the Navy spirit!

HEY, I had the same problem. It turned out one of my injectors was bad. They changed the injector and I have not had a problem since. Good luck!:thumb:

HEY, I had the same problem. It turned out one of my injectors was bad. They changed the injector and I have not had a problem since. Good luck!:thumb:
That is what they said is wrong with mine. I had to leave it there till tomorrow though. Have to wait for parts. They gave me a red cobalt for a rental till it's fixed. I don't like it compared to my HHR.:nono: :hhr:

It took two day's for them to get my part. When I saw my car in the dealership in looked like the Matrix. All those wires checking the computer system was crazy. Glad they found the problem! I know you will miss you Baby, I missed mine.:red:

I got my HHR back today. All is good in the universe again.:thumb: I'm glad I took the 8:30 appointment instead of the 2:00 one. who knows if I would be waiting till Monday for the part. I am very happy with the service I received form Muskogee.:one:

Glad to hear you're up and running. Kudos to the dealer for such prompt service. :bow:

I'm a little dismayed to find that dealerships don't stock common parts for these things. Rotors take a week when and if they can be found. Injectors, that are shared with many GM vehicles, are not stocked. Thinking they won't ever need maintenance is just wishful thinking and keeps people without their vehicles.

Price list for replacing the injector
Diag. remove and replace
clear codes
and test drive.....................................$58.54

Injector.......................................... ...$33.14

Rental car..........................................$84.0 0

My price. $0.00 Gotta love the waranty.

Well, now that she's back, it's time to take her down the road and BLOW ALL THE CARBON OUT! :lol:

Glad they got it fixed...................driving anything esle is just not the same!:thumb: :nuts: :nuts:

was the misfire going on while driveing or when you started it?

It happened while I was driving.

My engine light came on a couple of days ago and I took it in to the dealer here in the town where I work. This dealer and the dealer where I bought the car are affiliated and the service manager from where I bought the car was at this location. He hooked the scan tool up and said it wasn't showing an active code even while the check-engine light was still visible on the dash. He said there was a misfire code in history and about that time the check-engine light disappeared. He cleared it I guess, but he asked if I had ran the tank real low of gas. I said the low fuel message came on once about 600 miles ago and that was the only time it has been less that 1/4 tank. He then said that going around corners low on gas will cause it to misfire sometimes! That's when I got on-line and searched on here for "misfire" and found out about the injectors. Well now the light is back on, so I called and the same guy was out and whoever answers the phone in the shop when he's gone picked-up. I told him the problem and what was done yesterday and did he think the dealer here in the town I work could take care of it. He said he didn't know about that and would have to ask the service guy who was out. What does a 3yr-36000mi warranty really mean? Any GM dealer or just the one where you buy? Should the service department personnel know? Do I feel confident they know enough to test the fuel injectors as per service bullentin #08-06-04-001A and replace all four injectors and reprogram the ECM?

Well now the light is back on, so I called and the same guy was out and whoever answers the phone in the shop when he's gone picked-up. I told him the problem and what was done yesterday and did he think the dealer here in the town I work could take care of it. He said he didn't know about that and would have to ask the service guy who was out. What does a 3yr-36000mi warranty really mean? Any GM dealer or just the one where you buy? Should the service department personnel know? Do I feel confident they know enough to test the fuel injectors as per service bullentin #08-06-04-001A and replace all four injectors and reprogram the ECM?

I'm not sure who you spoke to, but if he doesn't know service then you don't need his help. Was he a service employee?

Nobody but psychics can fix cars over the phone or on a forum. I can guess what your problem is all day long, but the truth will be found during the hands-on diagnostics.

Your 3/36 is good at ANY chevrolet dealership. You can always mention the TSB to the service advisor, but good techs know these or perform a search at the GM Service Information site, once codes are pulled and they know what to look for.

I'm not sure who you spoke to, but if he doesn't know service then you don't need his help. Was he a service employee?

Nobody but psychics can fix cars over the phone or on a forum. I can guess what your problem is all day long, but the truth will be found during the hands-on diagnostics.

Your 3/36 is good at ANY chevrolet dealership. You can always mention the TSB to the service advisor, but good techs know these or perform a search at the GM Service Information site, once codes are pulled and they know what to look for.

Yes, he was a service employee I talked to this morning, but it was the Service Manager who pulled the code yesterday. He was at their other dealership. He did not say what the number was, just that it had a misfire in history. He did not do any tests, only pulled the code and then cleared it. Then told me about corning with low fuel levels sometimes causing a misfire (more than half a tank at that time he pulled the code). Are there any bullentins you know of about low fuel levels causing this? If there isn't any bullentins how would he know this, unless he's the phychic? The light is back on after less than 30 miles of driving still with more than a half a tank of gas. Don't you think he should have told me to bring it in for the diagnostics once he pulled that code? It don't seem right that I would have to demand that the diagnostics be done to see why the check-engine light keeps coming on, they should say "bring it on in." This vehicle is the only transportation to and from work for both me and my wife.

dscogin, what year and what engine are we working with here?

The following is called a Preliminary Investigation. For what ever reason GM never made it into a TSB.

Service Information 2007 Chevrolet HHR | HHR (VIN A) Service Manual | Document ID: 1998023
--------------------------------------------------------------------------------

#PIP3333A: Cylinder Miss On Left Turns And Cylinder 4 Miss On Right Turns - Possible Fuel Contamination - keywords CEL contaminated controls cylinders gas injector intermittent MIL misfire P0300 P0301 rail rust - (Jul 12, 2007)


Subject: Cylinder 1 Miss on Left Turns and Cylinder 4 Miss on Right Turns - Possible Fuel Contamination


Models: 2004-2008 Chevrolet Aveo
2004-2006 Chevrolet Cavalier
2005-2008 Chevrolet Cobalt, Cobalt SS
2006-2008 Chevrolet HHR
2004-2008 Chevrolet Malibu
2007-2008 Pontiac G5
2006-2008 Pontiac G6
2005-2006 Pontiac Pursuit (Canada Only)
2004-2006 Pontiac Sunfire
2003-2008 Pontiac Vibe, Vibe GT
2003-2008 Saturn Ion, Ion Redline
2007-2008 Saturn Aura, Aura Hybrid
2004-2008 Saturn Vue
2007-2008 Saturn Vue Hybrid

with a 4 Cylinder Engine
(RPOs L61, L91, LAT, LE5, LNK, LSJ, LV6, or LXT)
-------------------------------------------------------------------------------

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
On rare occasions, an intermittent engine misfire may be experienced on cylinder 1 during/following a left turn or on cylinder 4 during/following a right turn. The misfire may / will typically last up to 10 seconds. A SES light and DTCs P0300, P0301, and/or P0304 may also be present if the misfire lasts long enough.

This may be the result of fuel contamination and is more likely to occur on vehicles with a returnless fuel rail because it is easier for fuel contaminates to become trapped in a returnless fuel rail since they do not have a fuel return line that returns fuel back to the fuel tank. As a result, any fuel contaminates that make it to the fuel rail tend to gather over the #1 fuel injector inlet when turning left and tend to gather over the #4 fuel injector inlet when turning right, causing this concern. The cylinder next to the fuel feed line (1 or 4 depending on the model) may also experience some random misfires at idle as contaminates enter the fuel rail from the fuel tank.

Recommendation/Instructions:
If the SI diagnostics do not isolate a cause for this concern, inspect the inside of the fuel rail and/or fuel tank for fuel contamination. If this concern occurs intermittently, it is unlikely that fuel contamination will be found by simply taking a fuel sample from the fuel feed line/fuel pressure test port. Typically, it will be necessary to turn the engine off as the misfire is occurring, carefully remove the fuel rail (while keeping the fuel in the rail), and drain it into a clear container for inspection. If this is not possible due to the intermittent nature of the concern, or if no fuel contamination is found by doing this, it may be necessary to inspect the inside of the fuel tank for fuel contamination.

Notice: The Aveo and Vibe have an access cover under the rear seat so the fuel pump module can be removed for inspection without removing the fuel tank.

If fuel contamination is present, refer to the "Fuel System Cleaning" procedure in SI and clean the inside of the fuel tank, fuel lines, and fuel rail. Once the repairs are complete, advise the customer to only use fuel from high quality, high volume Top Tier filling stations. Repairs made as a result of fuel contamination should not be considered as a warranty repair.

dscogin, what year and what engine are we working with here?

It's a 2007 HHR 2.4 with 8,300 miles on it. It has all the options except anti-locking brakes, traction control and on-star.

The following is called a Preliminary Investigation. For what ever reason GM never made it into a TSB.

Service Information 2007 Chevrolet HHR | HHR (VIN A) Service Manual | Document ID: 1998023
--------------------------------------------------------------------------------

#PIP3333A: Cylinder Miss On Left Turns And Cylinder 4 Miss On Right Turns - Possible Fuel Contamination - keywords CEL contaminated controls cylinders gas injector intermittent MIL misfire P0300 P0301 rail rust - (Jul 12, 2007)


Subject: Cylinder 1 Miss on Left Turns and Cylinder 4 Miss on Right Turns - Possible Fuel Contamination


Models: 2004-2008 Chevrolet Aveo
2004-2006 Chevrolet Cavalier
2005-2008 Chevrolet Cobalt, Cobalt SS
2006-2008 Chevrolet HHR
2004-2008 Chevrolet Malibu
2007-2008 Pontiac G5
2006-2008 Pontiac G6
2005-2006 Pontiac Pursuit (Canada Only)
2004-2006 Pontiac Sunfire
2003-2008 Pontiac Vibe, Vibe GT
2003-2008 Saturn Ion, Ion Redline
2007-2008 Saturn Aura, Aura Hybrid
2004-2008 Saturn Vue
2007-2008 Saturn Vue Hybrid

with a 4 Cylinder Engine
(RPOs L61, L91, LAT, LE5, LNK, LSJ, LV6, or LXT)
-------------------------------------------------------------------------------

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
On rare occasions, an intermittent engine misfire may be experienced on cylinder 1 during/following a left turn or on cylinder 4 during/following a right turn. The misfire may / will typically last up to 10 seconds. A SES light and DTCs P0300, P0301, and/or P0304 may also be present if the misfire lasts long enough.

###

If fuel contamination is present, refer to the "Fuel System Cleaning" procedure in SI and clean the inside of the fuel tank, fuel lines, and fuel rail. Once the repairs are complete, advise the customer to only use fuel from high quality, high volume Top Tier filling stations. Repairs made as a result of fuel contamination should not be considered as a warranty repair.


This looks like a "Get Out of Warranty Free" card. Are the fuel filters made in Mexico?

There are PIs and TSBs concerning loose grounds and chaffed engine harnes wires and ECM pin connections.

First the Service Manager shouldn't of blown you off. Second is there another dealer around? Third now that he cleared the history code, whatever turned the SES light on today should be stored. It will need to go to the dealer to diagnose whatever code it is setting.

There are PIs and TSBs concerning loose grounds and chaffed engine harnes wires and ECM pin connections.

First the Service Manager shouldn't of blown you off. Second is there another dealer around? Third now that he cleared the history code, whatever turned the SES light on today should be stored. It will need to go to the dealer to diagnose whatever code it is setting.


Thanks for being a straight-shooter ChevyMgr. That piece about the contaminated fuel don't make me feel very good though. I'd have to sue the gas station where I last filled up to maybe get my money back for all the labor that would cost.

This looks like a "Get Out of Warranty Free" card. Are the fuel filters made in Mexico?

There is no fuel filter. Next time I see a fuel sender assy out I will see where it's made.

And before someone starts a "WTF NO FUEL FILTER" post, check this thread.

http://chevyhhr.net/forums/showthread.php?t=14359#4

dscogin, it is very unlikely that it is fuel contamination. I just wanted to show you where the service managers idea came from. Maybe 1 out of every 500 vehicles we see have contaminated fuel. Most likely an electrical issue or simply a bad injector(s).