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  1. V

    88 XJ 4.0L Will not start

    Found the problem. Having checked my ignition coil (per my Haynes manual), I was leaning towards a faulty ignition module. I borrowed one of my co-worcers ignition coil / module assembly. The thing fired up no problem. I kept swapping the items coil and module untill I pinpointed the coil...
  2. V

    88 XJ 4.0L Will not start

    Alright, I've read over every single no-start post on this site tried everything... still no start. The frame and the engine are properly grounded. I measured my CPS resitance at 194 OHMs which is within specs (200 Ohms +- 75) Proper voltage on the MAP sensor. Ignition coil checks out...
  3. V

    Swapping a '91 4.0 with a '99 4.0

    I've installed a '99 motor into a '88 XJ about 3 years ago. I believe '88 to '92 is identical. Here are the issues that came up: - Intake and Exhaust ports are slightly different. I bought both gasket set, for my 88 and the '99 engine. One of them fit better than the other. Forget which, but if...
  4. V

    90 4.0 Automatic XJ No start.

    I had this problem for the longest time. Internal light is on. Turn the key, buzzing comes on, turn to start... click. Even the int. light turns off. I found the source of my problem. It was the cables not making proper contact with the battery terminals. I would normally give it 1/4 of a twist...
  5. V

    88 XJ 4.0L Will not start

    Whats the CPS? If it's the base that the ignition coil plugs into... I've already cleaned all of the terminals. Oh... crankshaft position sensor. K i'll giver a try.
  6. V

    88 XJ 4.0L Will not start

    I have 88 XJ with a 99 straight six engine. About 1.5 years ago I decided to park it. Yea when gas prices started going through the roof. I've been starting it at least once evey two weeks. Untill about two months ago it decided to quit. This weekend I tried to find what was up. I have fuel...
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