Ωhm

If 2.5L learned anything from the 4.0L, both being RENIX, I would hope it would be the TPS & MAP way of how to do fuel strategy. 2.5L still had ISA, with build-in Closed Throttle (CT) Switch. 4.0L learned CT.

87 vs 88 electrical manual wise, show ECU pin C200_8 as WOT(87) or PSPS(88). WOT needed to add fuel while PSPS needed to kick idle up (used when in parking lots to prevent stalling). IIRC

You need to determine if your vehicle has a WOT Switch or PSPS Switch?

All photos look good. You didn't jump a tooth or two. Indexing is not your problem.

Good video. One man show with him.

Plug removed, thumb over the hole, only tells you when that cylinder is on the compression stoke. Time to fire (ECU) the plug (distributor) for that cylinder.

Yea. Plugging the hole and rotating the engine needs two people. Let see if I can make this even more confusing. Instead of Cyl#1 plug, remove Cyl#4's plug (easier to get to). Then the next time the timing mark shows up, you're on TDC compression stroke Cyl#1.

That timing mark on the crank (0°) can show up on either TDC for Cyl#1 or Cyl#6, depends on where the camshaft (valvetrain timing) is. Need to determine which one. Tip 12 tells how to do that.

Is this the tip 12 you're talking about? Tip 12

No, if your timing was off, it would be the fault of the ECU or ECU inputs. Timing is controlled by the ECU. Indexing is where the tip of the rotor is in relation to the distributor tower terminal. Crossfire, weak spark are some of the symptoms. Try and determine if your setup (index) is like that as shown in the photos. No need to cut tabs or remove distributor. Just check indexing.

Distributor could have jump a gear on the camshaft.

Happy Comanche buildday.

88 FSM Computer Relearn Procedures.pdf

Front to Rear = 1 thru 6

Excellent version. Thanks

Injector Pulse Width (IPW) seem high (Engine Running at Idle 6.9) for factory stuff. Should see between 5.3mS & 5.8mS. I wonder if ECU INJ codes could be true. This would force the ECU to increase PW for the INJs that are working properly.

PDF good by me. Must be signed in.

Great tool for rolling coins. https://banksupplies.com/color-coded-funnel-style-coin-sorting-tube-set-129-40004?utm_source=google&utm_medium=ads&utm_campaign=23706638831&utm_content=198477787561&utm_term=&gadid=802925818783&gad_source=1&gad_campaignid=23706638831&gbraid=0AAAAAD_up3dCEDjl2ONmggnklBXGsEeoe&gclid=Cj0KCQjwrZTRBhDSARIsAHidYfeke4Ub0tOnqYJ_-KVkv4e3AIvFkt4_XDhtSNToieP0qZK8elEnzCMaAoyQEALw_wcB

She'll love it. Not sure about posting her age online . Was it easy to find them pennies by the year?

Good time to flush the block out.