Ranger 3.0 No Spark

PMoreau · #1 02-20-2011, 03:22 PM

I have a 1993 Ranger XLT 3.0 2x4 with the manual trans.

When this problem began it would start fine, but die after 3 or 4 minutes, then require a 5 min rest before it would fire again. I checked the fuel pump, it is putting out about 35psi with out fail. Checked spark, found that I am not getting a spark when it isnt starting. Therefore this problem lies in the ignition system.

Here is what I have done so far;
- Tested for spark at the coil, not getting any there ( cap and rotor are good ). Was advised to replace the EEC relay in fuse box under the hood, did so and thought that fixed my problem for awhile. But 25 miles later it began cutting out. I left the clutch engaged when it did to use the momentum of the truck to turn the motor and it always came back to life, unlike before.
- Now that I knew the problem still lived I decided to pull the harness off the coil, TFI ( ICM up by the radiator ), and distributer to check the connectors. They all looked good but when I put everything back together I was back to square one with it dying very frequently and not restarting for awhile.
- Replaced the coil. No luck. Decided that it was either ICM or something in the distributer ( Stator, Crank potions sensor, pick up coil... ). Took the ICM to the parts store and it tested fine, all 7 times we tested it. I decided it must be the Ignition pickup on the side of the distributer so I ordered one. It will come in tomorrow but if that doesn't do it, I don't know where to turn.

I want to get it fixed tomorrow so Im hoping to have a plan in place if it still doesn't run right after the new ignition pickup.

Thanks

PMoreau · #2 02-26-2011, 10:24 PM

Rebuilt to distributer with a new pickup coil.
Nope.
Put a new ICM in.
Nadda.
Pulled apart all the plugs/connectors, cleaned and regressed em.
Nothing.

I have replaced every component if the ignition system! And the problem still lives. Ideas? Seems like it has to be the harness or EEC, but Ive said that before and it wasn't what I thought.

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Hitting a bump dosent always but seems to trigger the problem. Dose it other times too but bumps are definitely connected to it cutting out.

[Although the ICM didnt fix the problem it made the truck run better.]

DiabloBlanco · #3 02-26-2011, 10:50 PM

throwing any codes?

PMoreau · #4 02-27-2011, 10:52 AM

Check engine light dose not stay on, Ive not read any stored codes yet, figured Id do that later.

PMoreau · #5 02-27-2011, 03:47 PM

Cant get it to give me any codes wile its running, but I did get some KeyOnEngineOff codes.
-Manual trans lever position sensor open / vehicle in gear ( it was in neutral )
-MAF below min voltage
-Coolant temp sensor out of self test range
-Fuel pump circuit open; battery to PCM
And the most relevant;
-PIP circuit failure

I pulled the wiring diagram and the PIP wire goes to the ICM, Pickup coil ( inside distributer ), and the EEC ( brain box ). I tested the wire from the ICM to the pickup coil and got 2 ohms, seems good there.