TOP END REFINISHING

[Franke]

Originally Posted by Schrade

Yeah - had to be a fluke. Problems never 'go away' otherwise...

I'm gonna' get a vid of the singing TPS, and try to get feedback from TCI and RPM Transmissions.

I'm not exactly sure of what you mean by "singing ckt TPS". Are you hearing something or reading something electrically near the trans?

[Schrade]

Originally Posted by Franke

I'm not exactly sure of what you mean by "singing ckt TPS". Are you hearing something or reading something electrically near the trans?

Yep - as the TPS goes range of motion, something in the tranny buzzes. Pitch changes in the buzz, as the TPS arm swings. ONLY Closed Loop too - has something to do with some circuit gettin' energized in CL.

When I un-hook the power to the tranny control module, it does NOT happen.

The shop that did the tranny said it was probably a shielding issue, related to Fluid Pressure Solenoid. Pffft. SOMEthing in the install in not 100% correct, but again, no trouble codes in the programmable tranny controller. It even calibrates for 0% TO, and 100% TO, in it's own Setup Wizard, on the handheld interface for the controller.




Probably time to let this thread drop; maybe resume the 'Hesitation' thread 1990 Throttle Hesitation, FROM which Darryl chopped off for THIS thread... Top end is done - pretty sure it's done right (except for getting the TB to Marc, and re-installed).

[orthodoct]

Mine came off in two pieces and was ROTTEN: Jerry is THE MAN!

[Billy Mild]

Did you find your solution for the idle issue?

[Schrade]

Originally Posted by Billy Mild

Did you find your solution for the idle issue?

No I did not Billy (although it's not an 'idle' condition) - it's an issue that manifests @ 1.6 - 2.4% TO.

Marc H said the 'lope condition' that comes in @ 1.6% TO, and that continues from 1.6% - 2.4%, is a condition that "ALL 7,000 LT5's have".

I don't agree, but he knows more than me.

So until I can properly read AND write to the memory & calibration module, the 1.6 - 2.4% TO glitch is still there. Kind of a bitch at in-town driving / low throttle. But I know that all else is clean and in good burn order...

And the 2nd TB block when removed put back in about a 75 rpm swing, in DM, that was not there WITH the block. Block made rock steady 675 rpm's Open and Closed Loop.

When I get the hang of coding, I'll put the block back in to eliminate air leak in the TB 2nd holes, which is really negligible, as far as tuning.

[orthodoct]

I used CPU heat sink paste, used a finger to coat thin film over entire surface, torqued down in three steps, cleaned excess at margins with a q tip. Idea is to transfer heat from heatsink surface on underside of ignition module to plenum. Covering entire heatsink surface is the goal; can put on too little with result of incomplete transfer of heat resulting in hotspots with potential to burn out IGM, but too much only squeezes out excess when torqued. I play around a lot with electronics and ham radio. KC4NWF

[orthodoct]

I got a 20 grams container from Amazon for about 10 bucks. Will last me a lifetime.

[orthodoct]

Been using Bosch 4503 Platinum/Iridium with 4 prongs. Didn't think that that I would have to replace them until I got the PCV tube leak; fouled them.