D-jet troubleshooting, Only one item left on my list! Options

[saigon71]

My 1974 2.0 D-jet is running very strong, but there were two lingering issues with the FI that I wanted to address over the winter:

1. A severe idle "hunt." The engine would rush up to about 1200 RPM, then nearly stall...repeat cycle.

2. Every once in a while the car would buck, most notably at highway speeds...it wasn't bad, just annoying.

Last week I installed a new circuit board in the TPS purchased from Dave Sprinkle a few years back. It was calibrated according to the Pelican tech article using an ohmmeter.

I took a 210 mile road trip over the weekend to test things out. The car now idles perfectly through the entire warm-up sequence. Thanks Dave! (IMG:style_emoticons/default/beerchug.gif)

The problem is that I still have the same bucking issue. All my research points to the TPS. Any suggestions on what to check next?

[914itis]

Bob,
Some may remember my long thread after installing my 2.0 djet bucking at 3300 rpm.
After months and tons if money changing injectors ,tps ecu, vaccum lines trotle body and gasket, the issue was a $100 fix.

It was the vacuum advanced on the dizzy getting stuck. I replaced it and that was it.

I know it could be a number of things as stated in your thread, but you can do a simple test by sucking air out of the tubes and see if the arm moves.

Give it a try
Here is the thread Buckling at 3300