checkmate1996

No. I am not running any cats. headers, straight pipes....only.

hupp

My shark smelled rich with no cat installed. With the cat, no rich smell.

telidor99

I had a similar Problem with my Euro 928 (1981). Took a number of trys to get it to start. I had to give it a small amount of gas for a minute or so..then it was fine. Turned out being the Warm-up Reg.
Had mine refurbed.

checkmate1996

Ok, I just got a brand NEW switch out of the box PLUS two other used switches.
Results:
BRAND NEW SWITCH:
- W & G Connected together- (WSM=20-40 OHMS (Mine = 35.6)) (In-Spec)
- W to Ground - (WSM=0 OHMS (Mine = 0.9))
- G to Ground - (WSM=0 OHMS (Mine = 36.0))

Switch#2:
- W & G Connected together- (WSM=20-40 OHMS (Mine = 39.3)) (In-Spec)
- W to Ground - (WSM=0 OHMS (Mine = 2.8)) (Out of Spec)
- G to Ground - (WSM=0 OHMS (Mine = 37.5)) (Out of Spec)

Switch#3
- W & G Connected together- (WSM=20-40 OHMS (Mine = 38.4)) (In-Spec)
- W to Ground - (WSM=0 OHMS (Mine = 7.9)) (Out of Spec)
- G to Ground - (WSM=0 OHMS (Mine = 38.6)) (Out of Spec)

So, is the WSM on CRACK? 3 switches can't lie.

Switch#2 seems reasonably in check. I hate to spend $80 if I don't have too...now I"m really confused...or is there that much difference between 0.9 and 2.8?

checkmate1996

I think you mean AIR!!

Dennis Wilson

If your meter is reading correct (appears to be since the connector to connector is in spec) the new one is also bad. It won't be the first time a new part was defective.

Dennis

Optimator

In this case, I think so! DON'T RTFM?? Look at the schematic representation of the switch as shown in both the WSM and the wiring diagram. When the switch is cold, "W" is grounded, which means that "G-to-W" and G-to-ground" are essentially the same thing. Therefore, you would expect the resistance readings to be about the same. The 0 ohm for G-to-ground spec in the service manual must be a mistake. Am I wrong?

I'm not sure how low the resistance needs to be for the CSV to open reliably. As shown in my last post, my switch measured nearly identical to your new switch. My switch works - I watched it open and close my CSV. If you are curious about any of your new or used switches, you can perform the same test, which should be pretty conclusive....

checkmate1996

OK. I think we have come to the end of the road with this saga.

I put the new thermotine switch in, filled all the fluids back up and VOILA, it turned over in 2 seconds after sitting for 2.5 weeks!!!! I tested it again today after sitting for two days, and again, it turned over in less than 2 seconds.

I think I'm going to call this mystery solved.

What did I learn: 36,1,36 are good measurements to go by! Don't RTFM on this one!!

I also embedded an updated shot of my engine put back together with upgraded silicone hoses and refinished *EDIT* stiffening brace. Thanks for all of the help!

hupp

Checkmate,

Where did you buy the hoses?

Dennis Wilson

It appears the design of the switch has been modified to ground internally rather than relying on a wire connection. This is alright as long as nothing else is being powered on the negative side of the switch. Did we miss an update to the WSM?

Dennis

checkmate1996

Hupp,

Boostcontroller.com. Good prices and great service. Everything is in METRIC!!

The hoses fit AWESOME and take considerable force to pull off.

Good luck!

jpitman2

Hupp, thats not the 'anti-sway' bar as I know it. My anti-sway bar is connected to the lower suspension arm and the body underneath....A stiffening brace is more what it is.
jp 83 Euro S AT 50k

hupp

jpitman,

I'm with you on that one, but take a look at checkmate's comment with the engine pic......

He know's what he's talking about though...

checkmate1996

I'm learning everyday...if stiffening brace is the right terminology...then I want to use it!

Dennis Wilson

It is called a shock brace and it is a MUST. There have been instances when raising the front end of the car without the brace has resulted in a broken windshield. Also, with that much movement, your alignment would be adversely affected.

Dennis