Have a 2008 Pontiac Grand Prix with 223000 miles on it. About 500 miles ago I changed the Camshaft, all 12 roller lifters and the Timing chain. Since then, the car runs great, but at times it will not start or if it does start it feels like it sputters and runs very rough and dies. I can disconnect the battery for a few minutes and it seems to correct it for a few days and then comes back. The check engine light never comes on. Any ideas?

Question edited for clarity and 'spake' to 'spark'.
Question moved to model category.

Likely to be no fuel at the injectors or a sensor. If that is the case, you need an auto electrician.

https://www.google.com/search?q=auto+electrician+near+me

https://www.google.com/search?q=Pontiac+Grand+Prix.+Crank%2C+no+start


No crank and no start

nowhere. it has a timing chain that should last forever as long as you keep your oil in good shape. doesn't matter if you have a 4 cylinder or a v6, they both use chains.

Hi,
No one has ever used plastic gears and chains. Some of the older big block models used timing gears with nylon teeth. This is true for all manufacturers and I believe ford still uses them in some engines. The disavantage to the nylon teeth was they would wear out somewhat faster, usually in the 80K-100K range. The pontiac V6 3800 engine has had steel toothed gears from 1986 to present and considered the most reliable V6 model ever built. While it is rare to actually break a timing chain under normal driving conditions, it does happen in race applications. However, when teeth and chains wear out, rough running and high fuel consumption due to poor mechanical time is the result. 350 GM engines were recommended to replace timing sets at 80K miles for optimum performance and were notorious for chewing off teeth. The aftermarket high performance replacement sets were made of cast iron or tempered steel. Double roller chain types, while noisier, lasted longer with fewer timing relasted issues. I had a 1979 firebird for 17 years with 200K+ miles on it and it still ran like a champ, so like anything else, proper maintenance and good driving habits have a huge affect on engine component life....Mike

Hi
The car has a timing belt - [ rubber] and should be changed at 100,000 miles - each 100,000 miles = new belt.
To save problems many people do this at about 90,000 miles and it is also best to change the water pump while you're in there.

Best of it.
Gary @ Fix Ya

faulty lifter that collapses after it gets warmed up

The timing chain usually lasts a long time, and if you don't hear a lot of rattling, it's probably ok.

Timinig belts(replace every 80,000 mi.) seem to wear out faster than timing chains which when properly maintained through oil changes can last for the life of the car's engine.

I expect to get about 200,000 mi. on my 1990 Cadillac Deville which has a timing chain in it, and has just gotten to 192,000 mi. recently.

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the 2005 pont, grand prix, doesnt have a timing belt, rather it has a timing chain, this chain is good for 150,000 or more miles.

This vehicle does not have a timing belt it has a timing chain.You can go to the library and get a book or if you want to buy one you can usually get one at any part stores for about 15 bucks.Hope this helps.Good luck.

replace the timing belt tensioner if belt or chain still loose.

follow maintaince suggestions. it's over kill but you should never have a problem if you do. I have a 99 gmc truck with 156000 and i've only changed tranni fluid once about 30000 ago. runs like a top. i don't abuse my vechile, so as long as you don't abuse and follow suggestions, it should outlast you. what i do, is i look at the fluid, when it turns a dark red and or get's a burning odor to it, deffinatly time to change fluid. try to do it BEFORE it get's that bad.