b.lee

"I did some experimenting and found that an electrolytic capacitor (440 microFarads, 35 Vdc) with the negative side connected to the SIG RETURN wire and the positive side hooked to the TPS SIG wire gave me absolutely *troublefree* operation! Even though my TPS is basically trashed, the capacitor filters out almost all of the electrical noise, and my auto tranny once again shifts like factory-new!

I dug into the wire bundle coming out of the PCM and soldered the capacitor as close to the plug as I could manage - thinking some "TPS problems" may actually be wiring/connector problems in disguise.

Results with other values were:

220 mF, 35 Vdc - too little filtering. Tranny a little flaky.
1000 mF, 35 Vdc - far too much filtering, and a 1.5 second delay in transmission shift response crept in.
BTW, I might add that since I added the capacitor, my cruise control hasn't dropped out even once in 15K miles - usually a twice-per-week occurence (I drive 1500 miles a week). What I believe is that the dropout problem is caused by an electrical noise spike from the TPS - which is *exactly* what the capacitor filters out.

Please consider this tip a free gift for oilburner fans! The capacitor costs just 40 cents, and I hope it will save TDR members and others lots of money! After all, you can by a lot of #2 diesel for $200! :-) "

================================================== ====

I copied this from http://dodgeram.org/tech/transmissio...TPS_adjust.htm
I was curious if anyone has done this?
And is the "TPS SIG RETURN LINE" the purple/white wire?

Anyone?

b.lee

nobody has tried this?

I just got a 'noise filter' free from goerend trans, and I was wondering if it is the same thing as the above?

The goerend filter hooks to the 'TPS SIG' (orange/blue) wire and grounds out to the mounting screw of the 'computer' under neath the hood by the airfilter.

I noticed the above method uses the 'TPS SIG RETURN' instead of using a ground.

Anyone know the difference?