I'm thinking that if you didn't get cash for it it's NOT a clunker. I'm thinking my F150 is MORE valuable now that they have smushed all of his relatives.
not for keeping a clunker running before it's warmed up...!
CLUNKER! I'm standing right here! :'( :P
It's not a clunker anymore, right??
By that definition, Nope Drove it out to dinner tonight, it's running pretty decently now. New top speed of 35mph :P Tomorrow I might try some highway driving (70mph) with it and see what it needs. Still has a little surge going up hill, I have to data log my last changes (made a few last minute VE table changes before going to a dinner appointment) to see if it's a lean surge or if it's noise in my TPS causing the enrichment to kick in. I have the nDotTPS(?) turned up as high as I'm comfortable with to filter out the noise, but I'm not sure it's filtering it all. I'm kind of hoping by the end of next week to be able to drive it to Las Vegas and back (500+ mile round trip)
Did some driving today I took it out on the highway and did some steady state cruising on our empty highway. Also did a test run out to work and back, so I think I'll take the car tomorrow ;D I don't have the vacuum advance hooked up so I think I can pull a bit more vacuum as it seems slightly down from my carb set up, and is limiting itself to around 34* total. Seems to do pretty good at 75-80mph @2300-2400rpm and runs decent with around 15:1 A/F. It's a bit bouncy from 14.5:1 to 15.5:1, I'll get DG opinion on it later ;) But ran smooth there. However at 70mph and at 2100rpm I'm running into a mean stumble. And it seems to be noise induced, like electronic harmonics add up at that throttle position and it starts kicking in my Decel Cut repeatedly even though I'm keeping my foot in the same place. I do have some kind of noise I haven't traced in my ground (as all the sensors on the common ground have it) so it's a matter of finding the source. It's a good chance that it's spark plug wires, but I'm going to try and hold off on getting them until I get to civilization to warranty them, meanwhile I'll move my ground wire again and see what happens.
Did some driving today I took it out on the highway and did some steady state cruising on our empty highway. Also did a test run out to work and back, so I think I'll take the car tomorrow ;D I don't have the vacuum advance hooked up so I think I can pull a bit more vacuum as it seems slightly down from my carb set up, and is limiting itself to around 34* total. Seems to do pretty good at 75-80mph @2300-2400rpm and runs decent with around 15:1 A/F. It's a bit bouncy from 14.5:1 to 15.5:1, I'll get DG opinion on it later ;) But ran smooth there. However at 70mph and at 2100rpm I'm running into a mean stumble. And it seems to be noise induced, like electronic harmonics add up at that throttle position and it starts kicking in my Decel Cut repeatedly even though I'm keeping my foot in the same place. I do have some kind of noise I haven't traced in my ground (as all the sensors on the common ground have it) so it's a matter of finding the source. It's a good chance that it's spark plug wires, but I'm going to try and hold off on getting them until I get to civilization to warranty them, meanwhile I'll move my ground wire again and see what happens.
I'm thinking, disable the decel fuel cut, and raise the minimum threshold for now, until the noise issue is taken care of.
The pattern of the noise, looked JUST like a single cylinder's spark leaking to ground. Rythmic, and looked like it increased frequency with engine RPM.
Also can be a worn out cap & rotor.
In the meantime until you get that fixed, I'd consider loosening up the accel enrichment threshold just to make sure that your misfire is fuel related, and not an ignition or tach signal problem...
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The Tach signal is smooth as a baby's bottom. The data logs show the decel rapidly kicking on as well, with the TPS noise. I have the tps threshold set high enough I don't think it reads the lowest accel enrichment, and I still have what enrichment it's getting a tad high. I do have a new cap and rotor I could through on there. I'll send you two data logs and the MSQ.
Just found another use of the IAC. Buick 455's have a semi-inefficient water pump and they don't flow much at low idle, the factory installed a temperature switch that applied manifold vacuum to the vacuum advance to speed up the idle when the engine got too warm. Now I can just set the IAC to open up a bit more at 200*F to bring the idle up enough to cool it back down.
you mean you replaced a perfectly good mechanism with a few ones and zeros? Sacrilege!
In all fairness, I've never found one that actually worked :P I've tried a few I've pulled from the junkyard on my Centurion, because that one didn't work, and none have actually worked. I had to read in the Service Manual on what the function was. The cars to get warm just sitting there at 600rpm, run the idle up to 900rpm and they cool right down.
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