Is the CHTS for the non-turbo compatible with the Turbo? Also how much room for error does the CHTS allow for in OHMing it?

 

I've swapped turbo & na head temp sensors before.... they worked the same.

 

Cool, thanks for the info. I'm gonna swap around the CHTS sensors from my N/A to Turbo and see if that makes any difference.

 

oh good. I did the same because my NA had a fairly new one, but it made no difference. My car still runs like crap. I'm getting very frustrated with this junk engine...

 

junk "electronics" not "engine"

 

so true... stupid 25 yr old electronics. I almost think the wiring harness could be bad. That's my last thing to change out.

Maybe if I do the Z31 ECU swap, I'll just swap in the Z31 wiring harness too. I think that is one method of the swap, correct?

 

Quite a bit more work, but yes, fresher/updated wires.

 

Ok, so I OHMed my Turbo Z and I was getting a reading of 1.9 from the CHTS. The garage door had been open for a few hours, but it felt slightly warmer in the garage and I was getting a reading of 2.1 OHMs. I'm thinking maybe the CHTS is just off by a little on the turbo. It's really hard to figure out. I was thinking I should get an A/F gauge like Nismopick has said, but then it occured to me that if the O2 sensor doesn't work until a certain temperature that the A/F gauge would be of no use to me because generally by the time the O2 would be working the car's running fine.

 

At that point, I would actually consider making an entirely new harness. The only problem would be finding the right color coded wires or you would have to make a detailed crib sheet for the new colors.

With some time and a little elbow grease, you could do it. If you're careful, you could re-use the connectors as well.

How much time do you have...?

 

Sorry to hear you're still having issues with the motor Bleach, I know how hard you've been working on it. I hope you get it figured out soon... or stumble across an unexpected chunk of change that will afford you the ability to scrap all that 1980's crap in favor of a full tilt MegaSquirt wideband set up

Rod

 

How much coolant would need to be drained to pull out my CHTS or should I just drain it all?

 

You don't drain any... it's not a coolant temp sensor, it's a HEAD temp sensor. It's not in a coolant passage.

 

...
Yeah I found this out after I drained the coolant from my 2+2. Another thing that goes to show this Haynes guide isn't exactly accurate. It's too bad they didn't wait until 1983. In the Haynes guide they give info to remove Water/Cylinder Head Temp Sensors. It says you need to drain coolant. I noticed the CHTS that came from my 2+2 was not wet at all, and I didn't have containers so I could drain the coolant and reuse it from my Turbo Z. So I started undoing the Turbo Z's CHTS to find no coolant came out. Then I realized Haynes was again not to helpful when it comes to the 82-83 Zs.

 

sorry to thread hijack here, but is your maf ok(dirty?)? what is your engine doing exactly?

 

He had clogged injectors, but thas fixed now.

 

boost leak at the base of the injectors. I changed to a different style of injector holder. All fixed.

I changed the fuel pump in my car without draining the tank. The main fuel feed line poured out fuel for that brief moment when I moved it from one pump to the next.

 

Ah yes... I had that happen too. The next time I did that, I clamped on some vice grips so I didn't get hella sprayed.

 

I just held my mouth under the line so I wouldn't get the extra fuel on the garage floor. It was only about 1/4 cup of gas.