THIS IS FOR RONNIEH49 THANX FOR THE TIMING CHAIN AND GEARS IDEA I KINDA FIGURED THAT WAS IT,COULD THERE BE A RELAY OR FUSE PROBLEM THOUGH? I NOTICED IN THE OWNERS MANUAL THAT THERE IS A 20 AMP MINI FUSE FOR THE "ENGINE CONTROL MODULE"AND AN "AUTOMATIC SHUT DOWN" RELAY...COULD ANY OF THESE CAUSE IT TO NOT START? I AM NOT IN FRONT OF THE VEHICLE NOW BUT COULD VISUALLY CHECK THESE IF YOU THINK IT MIGHT BE A VIABLE CAUSE..THANX AGAIN!
AFTER FURTHER INVESTIGATION ON MY PART IT TURNED OUT TO BE A FUEL PROBLEM.I PUMPED THE ACCELERATOR AND HELD TO FLOOR AND TURNED IT OVER AND IT STARTED . THANX FOR THE ASSISTANCE THOUGH YOUR RESPONSE TIME WAS EXCELLENT
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That depends on which engine you have. Both 4.0 and V8 engines have a chain. The chain has no real time limit on how long it's good but from experience I've found that most, when well maintained will stretch to the point that they should be replaced at around 225 thousand miles. Chain and gears are not super expensive and if you buy the best ones you can find, if you replace yours at 225-250 thousand miles the new one should outlast the vehicle.
Just wrap the chain around the gears and lineup the dots. dot to dot and put them on. That's how it goes. The timing itself is not adjustable. It's controlled by the engines computer. It's that simple.
If you look at the distributor, you will see that the hold down is a bolt through an "ear which is part of the casting of the distributor housing. By design, it is not-adjustable. Actual timing changes are made by the engine control module. I had a problem with my 95, that seemed like symptoms of just about everything else except timing. After checking everything else twice, I removed the distributor, ground off part of the "ear" and used a smallblock chevy dist holddown, making timing possible. It worked! However this solution indicates that my timing chain is worn beyond the parameters of the computer. Therefore, as soon as Spring arrives, the chain & gear will be changed! If you want to make timing adjustment, don't. But if you must, it is possible!