Mcmopar

I'll do it this Sat.

daking

awwww. the pictures are not working any more

SlingShot

This info is not any good with out the pictures.


Are there any different links? I am in the process of learning the electronics under my hood.

wannadiesel

If you take some pics we can do a new thread.

BC847

Is this what y'all are talking about?

sdstriper

In the 89' Diesel Supplement the air intake sensor and engine coolant thermal switch are called "Thermistor". Location A, intake manifold and location B, head water jacket as listed above.

440_D50

Just a little update to hopefully help anyone in the future.

I have ran all over the place ordering sensors, returning them because they didn't work, ordering more. Calling this place and that, just to figure out that the pic and my truck's sensor location are different. My truck has the KSB one in front

The KSB solenoid has 3 pins. The air charge sensor for the grid heaters has 2 pins.

james1

First Picture
1: Grid / Intake heater Relay
2: Grid / Intake heater Relay
3: AC Clutch Relay (Wide Open Throttle Cut Out)
4: Starter Relay
5: Automatic Shutdown Relay



For posterity, the OEM Mopar part numbers are:
3. A/C clutch relay: 4443 907
4. Starter relay: 5600 6179
5. ASD relay: 4443 977

As has been noted, all three relays are identical except for the steel mounting brackets for affixing them to the fender.

oliver foster

Wow a three year old thread pulled out and dusted off!

Bob L

Nice to have a Refresher
Some things (stock) never change.
Thanks.

Ratfink

Still no part number for the Engine Coolant Thermal Switch.... Why bother.... This is 90% of what goes wrong with the OD dropping out.... and no part numbers... ever.... none

bigragu

Genos garage has that part. Pure Diesel power also has that part. In past posts the OD dropping out has been TPS related. Seems 99.9% the cause.

That TPS is like a $185-$225 item. About two months back, there was a link to fleabay for someone re manufacturing these brand new for like $40. I caught that, and ordered a couple as back up. Search on fleabay for that seller. He lives in a town called Fairfield, CA.

Or, you can find them used. Going rate is $125-$180 for 25 year old sensors.

Yours may just need an adjustment, which they do from time to time. Use the search feature and punch in TPS adjustment, or Throttle Position Sensor. Keep an eye out for that sellers link.

mknittle

Also could be as simple as a bad connection in plastic connector.

thrashingcows

Wow....seem a bit angry.

I don't have the part number myself, but I bet I could find it in less than an hour searching on-line. I have always been able to find the OEM or Cummins part numbers with a little research.