Running Then Cuts Off

[88whitemanche]

Hey guys I was at a traffic light heading home and the truck has been running great then boom the engine shuts off...i go to start it nothing looking around the engine bay checking vacume lines electric lines try to start it doesnt start...then I notice it wants to start but doesnt do.it fully so I disconnect c101 then.back together go to start it booms starts right up...and runs good from then.on...just happened five mins ago

 

 

 

Can anyone help?

[cruiser54]

Time to do this then:

 

Renix Jeep C101 Connector Refreshing

 

The C101 connector on 1987 and 1988 Renix Jeeps was a source of electrical resistance when the vehicles were new. So much so that the factory eliminated this connector in the 1989 and 1990 models. The factory recommended cleaning this connector to insure the proper voltage and ground signals between the ECU and the fuel injection sensors. We can only imagine how this connector has become a larger source of voltage loss and increased resistance over a period of almost 25 years. The C101 connector needs to be cleaned at least once in the lifetime of your vehicle. Chances are it’s never been done before.

 

Almost every critical signal between the engine sensors, injectors, ECU, and some to the TCU, travel this path through the C101 connector.

The C101 connector is located on the driver’s side firewall above and behind the brake booster. It is held together with a single bolt in it’s center. To get the connectors apart, simply remove the bolt and pull the halves apart. You will find the connector is packed with a black tar like substance which has hardened over time.

Take a pocket screwdriver or the like and scrape out all the tar crap you can. Follow up by spraying out both connector halves with brake cleaner and then swabbing out the remainder of the tar. Repeat this procedure until the tar is totally removed. This may require 3 or more repetitions. Wipe out the connectors after spraying with a soft cloth.

If you have a small pick or dental tool, tweak the female connectors on the one side so they grab the pins on the opposite side a bit tighter before bolting both halves back together.

 

Revised 07-17-2012

[88whitemanche]

Thanks for the post but ive done the grounds refreshing and cleaned c101 twice so far with in the last 3 months and just got the jeep back yesterday from fixing an electrical problem...ill try again

[88whitemanche]

But do.you think that can.cut.odf the truxk while running?