[twisty]

imported post

Oregonwinger wrote:

3k at 60. About right. My Toronado is doing about 1500 at 60. Quite a difference. But at light throttle, it pulses. Very annoying. Put a switch in the lock-up to kill the surge. Hurts mileage, tho, and it runs about 2k w/o lockup.

Oregonwinger, those older GM vehicles lock the converter solid when in TCC lock up,, the newer GM vehicles pulse width modulate the converters to allow slight slippage depending on the vehicle speed & load & throttle opening.

You might try putting a TEE in the EGR vacuum hose with a .012" orifice in the open end of the TEE then placing an old small paper fuel filter over the open end to filter the incoming air..

That takes some of thevacuum signal off the EGR at low speed high load & takes most of that surging out when it TCC lock-up..

Twisty

 

[twisty]

imported post

Oregonwinger wrote:

This is a "diesel" Don't laugh. I have it very reliable. What a pain it was in the beginning. None of the fuel system is original, except nozzles, and inj. lines. Cat bolts on the heads, and mains. Had a few of them break. Got rid of the troublesome, unreliable glowplug system. Just have a set of limiting glow plugs, and a return to center toggle switch. So, it's like starting a D-8, or such. Very reliable. Still no power, tho. It does have a EGR. Think that might work on the diesel? I thot about blocking it off. Don't have to do I-M anymore.

Oregonwinger, yes, that original low voltage fast rise glow plug system was a real pain as the plugs burnt out quickly. What is your glow time now before cranking?

On the EGR for surge on a diesel? I don't know,, it would be easy to block it off & see if it helps. If your exhaust system is plugging even a little it doesn't take much EGR opening to really skew the low speed runability.

Twisty