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Sandrion

Stumbling on take-off.

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My 1993 2wd Loyale with a 3eat, stumbles/surges on takeoff, from my driveway, a stop light or any other time I am stopped.  It acts like I am patting the gas pedal (if the pedal was super responsive)

 

It only happens when I lightly press the gas, as in... I just want to drive the car, not floor it and race from A to B.  I can drop the hammer and it doesnt stumble, but who wants to drive like that?

 

I have a clean fuel pump, that pumps great, no obstructions. And im pretty sure I am getting good fuel pressure. Any ideas? Throttle postioning sensor? Something else?

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my first thought would be basic tune up stuff like cap/rotor/plugs/wires.  other than that I would probably start by checking for a vacuum leak.

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Just replaced the wires, plugs, rotor and cap 10,000 miles ago. Vacuum leaks I could see, most all of the tubing is getting less flexible and all the vacuum tees and such are getting dry and brittle. Any other guesses?

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Isn't the cts on the manifold and the fan sensor on the rad? Kinda sorta have the same thing going on but just a little tiny lag before it pics up from a stop, I would like to know what you find:) I have done all the tune up stuff also and it just seems to be missing a little off the line:) we all know it's not a race car but it feels like a bog more than a power thing if that makes sense.

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Exhaust leaks also can cause stumbling problems on a turbo model. The fan sensor, is a coolant temperature sensor/switch. The only thing that it can sense is temperature of the coolant and the radiator that it attaches to. They tend to come apart real easily, for some reason.

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