Thanks bro...will check that. is it normal to have in the neighborhood of 10-12 hg at idle on these?
a healthy engine with correct cam timing, idle speed, ignition timing should be up to 17-18"
it is very common for a mechanic or even experienced TD owner to install a cam "one tooth off",
which - depending on which way it's off - can kill idle quality and vacuum
so add 'check cam timing' to yur troubleshooting list
it's not too hard to pop the valvecover off to inspect the cam,,,
and a good time to upgrade to 88+ roller cam (and PT lifters),
and 89+ "one-piece gasket" valve cover.
Edit: Ok, just went out and checked the cts. Unhooked, it gets 5.5v to the connector. Connect the power only to the cts, and get 5.5 through to the output post of the CTS. here is where it gets hokey...Hook the signal wire up, and the power side reads 0.65 and the signal side says 0.07. This all while the car was just shut off from a 1/2 long idle...definately up to temp. key was on during test.
yes something seems hokey there...
power side should stay near 5V even when hooked to sensor...
either sensor is bad (most likely),
or there's a problem in the wiring harness/connectors or (less likely) ECM
I would be interested in whats happening to the 5V supply to e.g. the TPS ?
if that's dropping too, or not ?