New GM Fuel Injectors (Phantom Stalling issue)

[tom.whitez34]

The following is an excerpt from http://www.findarticles.com/p/articl...02/ai_n8837187

A 1991-93 Chevrolet Lumina, Oldsmobile Cutlass Supreme or Pontiac Grand Prix with the 3.4-liter Twin D O H C V6 (VIN X) may show up in your shop with the owner complaining of phantom stalls during parking lot maneuvers when the throttle is closed and there are high loads on the engine from the power steering system and possibly the a/c. Problem for you is, the engine always restarts immediately, so how can you duplicate the conditions? You can't.

But if there doesn't seem to be anything else wrong with the car, know that GM has come up with new fuel injectors (Part No. 25170699) that flow richer at lower pulse widths to solve this problem. Before installing the six new injectors, though, go over the minimum air rate setting and the power steering pressure switch with a fine-tooth comb. Also, make sure the PCM has the latest calibration software installed. That should do it for the '91s to '93s.

MY QUESTIONS ARE: (I have a 1991 Z34 Lumina 3.4L)
1. Is there any way other than having to buy these new GM fuel injectors to solve the "phantom stalling" problem?
2. When above states... go over minimum air rate setting, can I adjust this for more fuel to go in to stop the low speed stalling?
3. How and where do I get the "PCM's latest calibration software".
4. Does Ben have a new ECU with a chip installed that will raise the stock idle so the engine will not stall at low speeds?
Thanks in advance for any input, Tom.

[pocket-rocket]

You can take care of #3 and 4 in the same go if you get a chip from Ben. You will have to read the code on your current chip to see if you have the latest. Either way if you buy a chip from Ben he can raise the idle and he uses the latest calibration to base the tune off of.

The PO if my 92 claimed that the Magnecor KV85 spark plug wires he put on the car fixed the phantom stalling problem it had.

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[tom.whitez34]

Thanks pocket-rocket. My ECM/chip has never been changed or modified, so I must still have the original 1991 calibration. How do I ask Ben... how much and how to get the latest chip?
Also, so your 92' has no current stalling or low idle rpm drop issues at low speeds with the Magnacor spark plug wires?

[pocket-rocket]

Right now it's on stands in preparation for paint and currently not on the road. It didn't stall, but it would dip down in the rpms from time and stumble but most of the time (not every time though) it would recover.

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[tom.whitez34]

Thanks. Can you let me how to contact Ben to inquire about getting the latest chip? Is there an e-mail address or a way through this site to ask him about it? Thanks, Tom.

[pocket-rocket]

He owns WOT-Tech, there should be a banner at the top if the page if you are on a computer.

Has SN on here is sappyse107.

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[tom.whitez34]

Thanks again for your help.

[TGP37]

So instead of modifying the MAF curve in the PCM they are making new injectors? lol, money money money

[pocket-rocket]

So instead of modifying the MAF curve in the PCM they are making new injectors? lol, money money money

91-93 LQ1 cars did not have MAF, they were MAP (speed density) based fueling.

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[TGP37]

91-93 LQ1 cars did not have MAF, they were MAP (speed density) based fueling.

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I see......well then carry on GM...lol

[pocket-rocket]

I see......well then carry on GM...lol

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