What have you done to your square lately??

[Blue Ox]

Ummm, does the spare PMD have a resistor chip in it? Otherwise that might be a problem. Most people don't know about the calibration resistor and go swapping PMDs willy-nilly.

 

[78C10BigTen]

Not that i needed it but i thought id give the pex trick a try. Damn i didnt think it would work that well!

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[Goldie Driver]

Not that i needed it but i thought id give the pex trick a try. Damn i didnt think it would work that well!

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What exactly is PEX ? I have read about this trick and would like to try it.

 

[bucket]

What exactly is PEX ? I have read about this trick and would like to try it.

It's the modern version of copper water pipe.

 

[78C10BigTen]

What exactly is PEX ? I have read about this trick and would like to try it.

Got to the harware store and look for shark bites in the plumbing section, itll be very close by. Ill post you a pic of it tomorrow.

 

[MrMarty51]

Ummm, does the spare PMD have a resistor chip in it? Otherwise that might be a problem. Most people don't know about the calibration resistor and go swapping PMDs willy-nilly.

HA, I`ll have to take a look in the connector. I do have a spare no.9 in the tool box, I run a no.5 in My grey box Stanadyne that's mounted to the heat sink, behind the bumper.

 

[Blue Ox]

HA, I`ll have to take a look in the connector. I do have a spare no.9 in the tool box, I run a no.5 in My grey box Stanadyne that's mounted to the heat sink, behind the bumper.

The resistor is matched to the pump's calibration, so unless the rebuilder was thoughtful enough to stamp the resistor number on the pump somewhere you're kind of SOL if the resistor is missing.

 

[MrMarty51]

The resistor is matched to the pump's calibration, so unless the rebuilder was thoughtful enough to stamp the resistor number on the pump somewhere you're kind of SOL if the resistor is missing.

The pump can be forced into relearn mode, KOEO, accel pedal to the floor for 45 seconds and engine temp over 170 or 175 degrees, I dont remember, then, key off for 30 seconds, then, start the engine, engine will run very rough and even to the point of dying, it is relearning timing too, restart the engine if it dies and then it will proceed through the learning curve and idle at a normal rate. It too will relearn after 50 key cycles, from what I have been told by those with much more experience in such matters. LOL
Scared the crap out of Me the first time I run through the relearn process, after installing new timing chain/sprocket components. Engine started running rough and died and I thought, oh S#*t. LOL

 

[Blue Ox]

Which has absolutely nothing to do with the calibration resistor. Sorry.

 

[MrMarty51]

Which has absolutely nothing to do with the calibration resistor. Sorry.

Even after the 50 key cycles, from what I read is after so long, if a resistor is not installed, the pump will fail to function after a while, so, there must be a relearn process in there somewhere, I switched Mine to a no. 5 after removing a no. 9 and have not had a problem.

 

[Blue Ox]

Even after the 50 key cycles, from what I read is after so long, if a resistor is not installed, the pump will fail to function after a while, so, there must be a relearn process in there somewhere, I switched Mine to a no. 5 after removing a no. 9 and have not had a problem.

The "relearn" process is to put the pump on a test bench and go through the calibration procedure. The test equipment will then assign a resistor number to install and then retest the pump to verify it. There's no procedure that can be done on the vehicle.

You can probably get away with substituting a resistor. Depending on the actual calibration vs. the resistor it may or may not be noticeable.

 

[bucket]

This resistor stuff sounds like complicated nonsense...

Glad I like gassers, lol

 

[Poppy 87]

This resistor stuff sounds like complicated nonsense...

Glad I like gassers, lol

Without the said "test equipment", probably similar to the hit or miss trial and error process of changing jets in the carburetor and timing the distributor

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[bucket]

Without the said "test equipment", probably similar to the hit or miss trial and error process of changing jets in the carburetor and timing the distributor

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Good point. But familiar things = easier things to me.

 

[FireTruck1984]

Got rid of the ugly hex bolts that fasten the rally center caps, and added polished stainless button head machine bolts. Also have 5 per wheel (not 3).
A much cleaner look

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