Five problems related to manifold/header/muffler/tail pipe have been reported for the 2006 Jeep Grand Cherokee. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Jeep Grand Cherokee based on all problems reported for the 2006 Grand Cherokee.
Exhaust manifold bolts broke on 4. 7l v8 engine while driving down the street.
Driving approx 50 mph, the Jeep quit, no warning signs, no power steering. Momentum got me off the road. Dealership wasn't able to fix the problem. This happened in March 2011. Sept 2011 I was passing a transit bus on the way to work and as I started to pull back into my own lane the Jeep quit again. No warnings, it just quit. I had to coast into the front yard of someones house because I had no steering. I sat for a few minutes, started it up and drove back home. The onboard diagnostics light, esp, bas and traction control lights were on. From that point the Jeep was running very badly. Dealer had my Jeep for 6 days and said it was a map sensor on the manifold. Got the Jeep back and backing out of my driveway in the middle of the road, it quit. A couple tries and it restarted. I'm very upset that this vehicle has put me in harms way on 3 separate occasions. I couldn't imagine driving on a twisting steep road and having it quit. I'm lucky I wasn't killed the day I was passing the bus. I'm not convinced the map sensor is the problem and I don't trust this vehicle. I drive a lot and transport my kids. We are all in danger in this vehicle. Mainly because, it gives you absolutely no warning that it's going to quit, it just shuts down as if I shut the key off. I have only the ignition key on the keyring so I know it has nothing to do with heavy keys pulling on the ignition switch. I am not the only complaint, they are all over the web, it is an issue and someone needs to address it. This vehicle has become dangerous.
The left rear exhaust manifold bolt broke causing an exhaust leak must be an issue with the 2006 seen other reports of the same bolt breaking, car was in motion city street.
Exhaust manifolds leak, potentially introducing exhaust gases, including carbon monoxide, into the passenger area. I initially took my vehicle to lithia Dodge in santa fe, nm to report an exhaust leak that sounded like it was coming from the passenger side and was to be repaired under warranty. They only repaired the passenger side without apparently performing a leak check. The fix for this is to replace the oem gasket with one that incorporates metal to apparently compensate for the expansion of the dissimilar metals of the head/exhaust manifold. Since there is a defect, the gaskets leak, and the uneven expansion causes the bolts/studs to break, exacerbating the problem. After the repair the sound seemed similar but I assumed it must be injector or valve/lifter noise. Recently I had my transmission serviced by a local shop and they noted that I had an exhaust leak. Again I listened and it sounded like it was coming from passenger side. This time when I took it to the dealer the mechanic performed an inspection and found the driver's side to be leaking. Again he attempted to replace the oem gasket with the upgraded gasket, but in the process broke a stud off in the head and was unable to repair without excess expense, now not under warranty, of course. The service manager also told me that the other side was leaking and that they would have to repair it, but the mechanic said that the passenger side was not leaking. It's obvious the manufacturer knows there is a defect, since they issued an upgraded gasket. These vehicles with the 4. 7l v8 should be recalled and the proper gasket installed. I have read on various forums online that this has been an issue since the introduction of the 4. 7l v8 in Chrysler products. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
The contact owns a 2006 Jeep Grand Cherokee. The contact stated that the engine light would intermittently illuminate. The vehicle was taken to an authorized dealership who stated that it was probably caused by the gasoline cap. The dealer inspected the vehicle and stated that there was a misfire in the engine but they could not determine where. The contact then stated that after a few months, a constant cloud of smoke emitted from the tail pipe. The vehicle was taken to a local mechanic who stated that antifreeze was mixing with the engine oil. The contact consulted the dealership who stated that the antifreeze could not have caused the failure. The contact called the manufacturer who offered no assistance. The vehicle was repaired by the local mechanic. The VIN was unavailable when the complaint was filed. The current mileage was approximately 43,800. The failure mileage was approximately 42,000.