TPS harness or? no shift,no cruise,ac problem

[DPKetchum]

First off I was deactivated! I am a member,got magazine today. Issue 40. Anyway truck has sat a few days. Heavy rain etc. Left to go get dinner and drove it. Erratic lights dimming and volt meter in wide swings,noticed a rapid clicking under hood with defroster on. drove a short distance and erratic up shift to o/d then no o/d. Stopped and unplugged tps. Wasn't wet or even felt damp. Has elect. grease in connector etc. Plugged it back in and all worked well. Cruise was in-op also. had this happen before after cleaning engine once. Unplug connector and plug back in all works as it should. In the plug harness or ??

 

[dodgenstein]

Sound like the problems I had last summer when the connector on my crank position sensor was loose. It is in the same harness as the TPS and you might be moving it when you work on the TPS.

 

[Philip]

Something to look at. On my truck the wiring was ran over the top of the #2 injection line ( you can see the shiny spot on the line on the inside of the bend closest to the camera). It had the wiring pulled kind of tight. This might be putting vibration into your plugs on the TPS and RPM sensor. The vibrations could be causing a intermittent connection problem like you are having.



I rerouted mine to take the stain off and secured it better. Here is a pic of the way I did mine a while back.

 

[DPKetchum]

Thanks for the tips. I wonder if this harness can be ordered. If its a harness just to those two sensors with a plug in. I did'nt touch harness just parked truck. Sat two or three days and started it and drove off. Unplugged tbs under a lighted sign and it was ok after this. Think harness may have a clitch.

 

[dodgenstein]

My TPS connector went bad(intermittent short found by moving wires with volt meter connected). DC has a repair plug with short wires attached to repair with . I can't find the invoice,but if I do I will add to this post.

 

[DPKetchum]

GREAT!

 

[dodgenstein]

Found invoice. Part number 4728883 wire pkg-thro. price May 02 $39. 13. Hope this helps.

 

[DPKetchum]

Thank you.

 

["Mad Max"]

TPS/overdrive fix

Fellas - I have been fighting this TPS -vs- overdrive battle for a while - od doesn't seem to want to kick in so have to ease offa the gas to get it in, then kick back out at 50 mph, blah blah. So, go to check volts, etc, and seems there wasn't a lot of adjustablity in the TPS switch on top of the pump. Dealer friend and I found a neato fix - remove the two little metal crush sleeves inside the bolt holes and you'll gain an extra ende on voltage. If you crush the switch because you tightened the bolts down they yer usin' too mucho force! Was going for max voltage (loosened two allen bolts and turned switch clockwise) and got to about 8. 6 and thought that would do it. No good - made it worse. So, in a fit of madness I turned the switch completely the other way (counterclockwise), bolted it up, and presto! the od kicks in nice and firm every time, right around 35 or so, later if yer in the gas. AND now I can control when it kicks in on a hill hauling a load - it will be on unless I say no I want it off, and that is all up to me, not the volts.

2 cents worth -

- S

 

["Mad Max"]

Forgot to mention - Affter removing the crush sleeves there may be a dendancy for the bolt heads to try to burrow down in the switch holes. So, put a little washer under each bolt head and whammo - no more problem, plus the washer will spread out the load on the switch housing. Works great for me...

Here's a pic:

- S

#ad

 

[DPKetchum]

Ordered tbs harness this A. M. 11 in Atlanta depot! Cost was $30. 89.

 

[Philip]

There is plenty of adjustment on the TPS. You do it on the bolt that goes into the throttle linkage. If you notice there is a flat spot on the piece that comes out the bottom of the TPS. Just put a wrench on it and turn the bolt as needed. No need to remove the crush sleeves.



If you have a TPS that is changing settings on its own. Just space the bracket up on the pump and install a nut on that same bolt to lock in down.