Question about 1988 Jeep Wrangler
After changing the fuel pump,, wires plugs, filters it still has no power for
a simple hill
Got a 4.0 in there? I'll bet the timing chain has streched. At about 160K, the strech on the chain causes the distributor (cam sensor) to be "out of phase" with the crank sensor, effectively messing just enough with the engine ignition timing, to give you these symptoms. On older vehicles, you could simply adjust the base timing by turning the distributor. Yours is locked in one position, therefore you can't do that. I don't recommend you do this but there is a way to "cheat".
You need to remove the distributor and grind off the hold down tab so it is now able to turn past the hold-down bolt. Place a large flat washer under the bolt(with one edge ground down to conform to the distributor housing) The timing can then be changed. If you turn it about 1/4" CCW, you will note an immediate change in performance. Use a timing light to bring timing up to about 4 degrees advanced.(back off a bit if getting into knock on hills). This will buy you some time before changing chain. Remember though this is temporary and that the base problem needs to be dealt with!!!
Posted on Jan 04, 2009
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