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Type: Posts; User: Ethan

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  1. Anybody? This is proving to be a real issue. If...

    Anybody? This is proving to be a real issue. If ya'll need more information, I've replaced all the sensors, the map, coolant temp sensor, IAC, TPS sensor. The only sensors I didn't replace were the...
  2. Why do you have a turbo 350 in a truck that...

    Why do you have a turbo 350 in a truck that should have a 4l60e? And my best guess on the leaking is that the front pump is toast.
  3. Timing Advance issues and a Performance Chip for 1994 Chevy

    So my 94 is having what I think is timing issues concerning the timing advance. The truck stays constantly 20 degrees advanced at idol and under heavy load and anything inbetween. My MPG is lacking...
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    Timing issue on a 1994 350 TBI

    I recently did a intake manifold gasket on my truck, and have been trying to get the timing right, but a few things are striking me as odd. First off, I have access to a GM Tech 2 with an OBD 1...
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    Since I got no help on this, I went ahead and...

    Since I got no help on this, I went ahead and ordered a complete rebuild kit for the 2-4 band apply servo, and did some research. My research shows that the 2-4 band apply servo is a weak point of...
  6. Could be alot of things, maybe the 1st clutch...

    Could be alot of things, maybe the 1st clutch pack is worn out, and slipping, and grabs once it heats up and expands, could be the stator in the torque converter is slipping( a very good...
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    I honestly don't see how it would affect anything...

    I honestly don't see how it would affect anything running over the carbon that fast. I mean, it's not like it's BG fuel injector cleaner or something. I've cleaned parts in SeaFoam and it takes a...
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    Me and my dad have been running SeaFoam in my...

    Me and my dad have been running SeaFoam in my truck since 1994 every single month through the gas. The engine still pulls 22 inches of vacuum at almost 170,000 miles on the engine. But I would never...
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    Yes and no. If you change out the intake manifold...

    Yes and no. If you change out the intake manifold to accept a carb, the engine will run just fine, but the transmission wont like you. Likewise, TBI is still using electronically controlled fuel...
  10. Well, you can do it by pulling the engine up...

    Well, you can do it by pulling the engine up above the hood line and tilting it back a little...so at least you don't have to take it ALL the way out...but otherwise, no, it's impossible to get a 1...
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    The side that has all the clean spark plugs is...

    The side that has all the clean spark plugs is the classic sign of coolant getting into the cylinders...could be a blown head gasket, or just a blown intake manifold gasket on that side, but I'd put...
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    Like I said, OBD I does not have a flood mode, so...

    Like I said, OBD I does not have a flood mode, so holding it to the floor will create a super rich start, and some other issues you might not like. And a TBI system does hold fuel pressure, just not...
  13. The bi metal fan clutches Chevy uses do not have...

    The bi metal fan clutches Chevy uses do not have fluid in them, I doubt Chevy has ever used a vicious fan clutch, that's more of a Toyota/Honda/Nissan thing. Its not metal on metal, it's more like a...
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    Like I said, it only goes in two ways, it's not...

    Like I said, it only goes in two ways, it's not like with traditional distributors where you can be one tooth off, it's keyed so it only goes in two ways. I'd time it because there is no guarantee...
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    If the crank sensor was bad the engine wouldn't...

    If the crank sensor was bad the engine wouldn't even run. Maybe this second sensor is farther up in the pedal area...I'd get a scan tool to figure out exactly whats wrong, just guessing and replacing...
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    The P1125 code is Average pump period system, or...

    The P1125 code is Average pump period system, or pedal position system. It makes sense, at idle you aren't pressing the gas pedal, when you press the pedal down you get the code relating to your...
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    How long has it been since you replaced the EGR...

    How long has it been since you replaced the EGR valve? Sounds like its stuck open, flooding the cylinder with exhaust gas, prevent start up, and backfiring once you quit cranking.

    You could try...
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    No problem, I could write a lesson on doing it...

    No problem, I could write a lesson on doing it myself.

    A few other things I should mention just to make sure you don't run into any problems. I'm pretty sure yours still has a distributor, when...
  19. Thread: 4 WD Problems

    by Ethan
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    Have you lifted the truck completely off the...

    Have you lifted the truck completely off the ground, and then put it in 4wd and confirmed the front tires spin? Is the 4wd engage system electronic, or mechanical?

    It might be that it is engaging,...
  20. If you use the cheap fan clutches they tend to...

    If you use the cheap fan clutches they tend to not work very well, my 94 has the same bi metal fan clutch, the metal grips the shaft on the water pump pully harder when the metal heats up, it expands...
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    Hopefully I'm not too late to tell you this, when...

    Hopefully I'm not too late to tell you this, when you drop the manifold in place, DO NOT move it back and fourth, just drop it straight down, if you don't get it aligned, pick it back up, and drop it...
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    Here's the exact replacement engine you'll need,...

    Here's the exact replacement engine you'll need, everything else you can take from your old engine, like the TBI and intake and all the sensors.
    Not a bad price either, $1768.
    ...
  23. Absolutely nothing, the only difference is one is...

    Absolutely nothing, the only difference is one is more expensive than the other, and a different emblem. GMC's tend to be more like fancy Chevy's, but since they make all the trucks like Cadillac's...
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    OBD I doesn't have the flood mode, so holding the...

    OBD I doesn't have the flood mode, so holding the pedal to the floor does nothing but inject the maximum amount of fuel possible. From what I gathered from my 94 doing a fuel pressure test, it'll run...
  25. First off, I wouldn't do anything to it until you...

    First off, I wouldn't do anything to it until you find out from the dealer what you can do to it without voiding the warranty. Second, if you want gas mileage and performance, you can't just do the...
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