Update:
A few weeks after the repair, the engine began running rough as if the timing chain had jumped. It triggered a P0010 and P0011 code, which is for the Cam Actuator Solenoids. My daughter took into a shop and they replaced one of the solenoids, which had some crud on the screen. I don't know if my replacement of all of the parts, kicked up some crud, but it has been running well since then. The solenoids are fairly easy to replace as shown in this video from lastmoto777:
• Replace a Camshaft Pos...
Hello All,
Getting ready to drive my daughter's HHR from TN to CA which will be a 2,100 mile, 32 hour drive and I needed to replace the water pump (which normally fails around 150k miles on these 2.2L engines) as well as the Timing/Balance chains (which when they go out, will cause major valve/head damage, due to this being an interference engine). This preventive repair can cost in excess of $2,000, due to the number of repair hours as well as the parts. I purchased a complete kit on Ebay from Mizumoauto for $160, which I had used on another 2.2L engine. It includes the water pump, both chains, all guides, both tensioners and the timing cover (item # 221850527479). Also purchased the wp gasket kit(for tube and thermostat o-rings), thermostat, 1 gallon of Dexcool, timing chain oiler, valve cover gasket w/grommets and the cam sprockets w/bolts (from AM-autoparts, for $160 - item # 371098518163) as my engine did not use the sprockets provided in the kit.
It turns out my water pump had a small leak and while not overheating, before the repair my temp gauge would operate at around 200 degrees on the hwy and sometimes hit 210-215 in city traffic on hot days. After the repair, the engine operates at 190 on the hwy and 200 in traffic.
On a side note, my radiator fan motor went out about a month before, so if you are making a long drive, I would recommend you replace the OE unit as the complete assembly was only around $70 from Advance and comes with a lifetime warranty.
When I did this repair on a Pontiac G6 a few years ago, I could not find any youtube videos. This time however Davidmezera (always a good source) had a video and I also used a Cloyes video as a reference (as it shows an engine out of a vehicle). Here are the links:
• Timing chain replaceme...
• GM 2.0/2.2/2.4L, Timin...
As I load this video, I am sitting in my daughter's apt in Sunny CA and can tell you that I had no issues on the 3 days I took, to make the drive.
On a scale of 1 to 10 (10 being the most difficult), I would rate this job as 9 if you have never done this repair and maybe a 7 if you have. Would not recommend this repair to a novice mechanic who has never done a timing chain/belt on a interference engine.
Good Luck!
PS
A fellow worker with a 2008 HHR, with 140k miles had his timing chain go out and instead of paying $2,500+ to repair the valve/head damage, he chose to drop a used engine in, for about $2,000. Problem with that is if he doesn't do this preventative repair on the used engine, he may have the same problem on the replacement engine.
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