staring problems

90 xj stock will crank forever until battery dies. no spark, no injector pulse. fuel pump runs for 30 sec prime. replaced crank sensor and distrubtor with new pickup. any ideas where else to check? any help appreciated.

How did you check for spark and injector plulse?

Check the fuses, fuse box.

If it is not a fuse, then it sounds like a wiring (opened, broken wire or grounded power wire, or loose connector involving the ECU) or it could be an internal ECU problem since there is no spark and no injector pulses. If it was just no spark I would look elswhere.

My 87 fuel pump cuts off after 5 seconds. 30 seconds sounds too long for the fuel pump to prime, like a return line valve problem of some kind. I would solve the no spark no fuel injector pulse problem first and ignor the possible fuel pump problem for now, since it does run and does cut off after 30 seconds.

Mike McGinness
South Houston, Tx

noid light and spark tester at each plug and from coil plus I used my scanner to test other sensors.

Hmmm get a test light and hook the test light up to the pos side of the battery and check to see that you have a ground on one terminal of every inj conector.

Also check the ECU, engine, and firewall GROUND to the battery!!! You may get lucky!!!!!

Mike McGinness
South Houston, TX

sounds like a personal problem.....ohhh it says STARTING problem!:looney: