99 intrepid Timing Chain Problem

Since I have signed onto this forum my intrepid has been going down hill fast. Well I had it towed to the garage the other day and they tell me my timing chain needs to be replaced. That is why I received the errors 1694 and 1391. They say it would not be worth it for them to replace the chain (1000 - 1500).
I am going to attempt to do this on my own, I figure at this point what do I have to lose.
Anyone have any advice for me? If you have done this, what worked the best, what did not work at all?

I have never done a timing chain before so this will be a first.

I look forward to some great suggestion, besides scraping the car. :smile:

your codes you have: P1684 is a communication code and P1391 is a loss of camshaft or crankshaft position sensor. I would check those sensors first before tackling a big job like replacing the timing chain b/c that is a very big job to do on this car for an inexperienced home mechanic. To check your cam sensor, it's located in your driver's side cylinder head by the front timing cover, disconnect the sensor and have a voltmeter and check for supply voltage w/ the key on, you should have 8.0 volts. If you have 8.0 volts, proceed by checking the sensor signal by getting a paper clip and backprobing the tan/yellow wire. Get your meter and place the positive lead on the tan/yellow wire and the negative to a good engine ground. Turn the engine over (best to do it by hand, get a buddy to help you) and look for the voltage to fluctuate between 0V and 5V. If that doesn't happen, replace your cam sensor. Check your crank sensor the same way, it's mounted on the passenger side bellhousing of the tranmission, it might be best to jack the car up to get a better angle on it. Again, disconnect the sensor and read for supply voltage w/ the key on, should be around 8.0 volts. If you have that 8.0 volts supply, plug sensor back in, backprobe the gray/black wire and do the same thing you did before w/ the cam sensor, read for the voltage to fluctuate between 0.0V and 5.0V. If that doesn't happen, replace crank sensor. Even if your cam sensor is good, chances are, you have a cracked or broken tone ring in the cam sensor. Check those sensors first before doing the big work of replacing your timing chain, it's not easy, just telling your from personal experience.