Sounds like the ecu on your jeep is not powering up all the relays properly, allowing spark. Have the ecu checked to see if the capacitors, which regulate power to the main relays, are dead and need to be replaced.
SOURCE: 1993 honda accord 2.2,no injector pulse
This sounds like a main relay problem here is a diagram its located under the dash under steering column its the brownish -orange box in the picture. http://www.tegger.com/hondafaq/mainrelaylocation/7-main_relay_closeup.jpg Good luck and thanks for using FIX YA
SOURCE: no start. i have gas, spark and injector pulse
yes it would due to timing if the sensors are bad the engine want start due to timing
SOURCE: 1999 Jeep Grand Cherokee Larado wont start.
If computer sees no crank sensor signal it shuts down pulses to the injectors. But, you bring something new into the mix. Make sure fender grounding is good so the relay can operate properly and make sure power going to it is not restricted by a loose or dirty contact on the power side.
Testimonial: "Sounds like a good start"
SOURCE: i have no spark or injector pulse sometimes it
You got a crank sensor at back,on top of bellhousing.
Injector pulse, I believe is controlled by hall effect sensor in distributor, as well as spark
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