Windshield wiper and blinker problem perhaps wiper pump also

[Green57]

Gents,

I'm having a strange problem with my left hand blinker. When I turn my left hand blinker on, my windshield wipers start wiping and the blinker light on the dash does not flash. From out side the bulbs light up but don't flash and are very dim. I though the bulb was burned out so I replaced it but it did not fix the problem.

Also when I try and wash the windshield the pump seems to have lost pressure as the cleaning fluid just dribbles out. At first I thought the spray nozzle was clogged so I cleaned it by back flushing it and hitting it with some compressed air, but no change.

Is there a common ground that these items share? Where should I look to trouble shoot this?

Thanks for any help.

G57

[SVOeric]

I'd double check the connections on both blinker/hi/lo stalk and wiper stalk. the plastic connectors on the wiring harness are 40 years old now, and are brittle. if the clips have broken, the connectors could be coming loose and causing all kinds of weird stuff to happen.
That's where I'd start.
I'd also check voltage at the pump when activated, to see if you're getting a full 12+ volts (battery voltage) at the pump. this will give you an idea if the issue with dribbling fluid is a blockage, or weak pump.

[scenario]

GROUND issue!

They def utilize the grounds at the front header area one on each side. (either side of top of radiator)

I had 100% same symptoms when I disconnected those grounds when I painted the car

[Green57]

TLDR: no ground signal from ignition to TFI where to look for damage/how to fix?


Hello Gents,

A quick follow up. I Have checked all the grounds front for broken wires and cleaned the contact surfaces and still have the same problems with an additional problem that just showed up.

The car stalled in traffic and all symptoms pointed to the TFI. I replace it and the car ran normal but seemed to stagger or cut out at high rpm. I thought I had altered the timing a little so the following day I went to check the timing. I tried to start the car but it would not fire. I didn't think my new TFI was bad but checked it anyways with an Ohm meter and everything was normal.

I checked the signals coming from he TFI harness and found that there was no ground coming from the ignition. I replaced the switch thinking it had gone bat but that did not solve the problem.

Online AI says there appears to be a fault/break in the ground wire to the TFI.

This makes sense as all test and replacement parts point to this being the problem.

Question is where do I look?

Steering collum?

Wiring harness?

Computer side?

I'm stumped...

TIA for any help.

G57