Electrical Gremlins? ABS A/C etc - Page 2 - ZR-1 Net Registry Forums

emmvette · 08-27-2013

I think about everything is sorted out now - except the A/C. Keeps blowing fuses and can't find where the problem is.

gbrtng · 08-27-2013

Check the resistance of the AC compressor coil first - should be about 3.4 ohms.
When that fuse blows, you get SYS messages and not much else works either.

batchman · 08-27-2013

I will say that I've found a few things "autocross related" worth mentioning:

- door switches will indicate "door open" in spirited cornering

- doesn't take much stress for battery connection to be "iffy" and give intermittent "sys"
- hub play can lead to ABS light

I always thought "I never kick into ABS", learned different when one day the only spare hub I had was from the '88. Boy did I ever make some flat spots that day.

Sounds like you're on the right track though.

Cheers,
- Jeff

emmvette · 08-29-2013

Quote:

Originally Posted by gbrtng

Check the resistance of the AC compressor coil first - should be about 3.4 ohms.
When that fuse blows, you get SYS messages and not much else works either.

I haven't done this yet; guess its time to pull the plenum. Will the coil cause the fuse to blow?

By the way, here's a pic from the other weekend. It was kind of funny, somebody took this pic right as I realized my ABS was gone - it looks like I slid a little right as this was taken - I'm a long ways from the near side cone!

ABS or not, I had a great time and the car performed very well. Now the driver - lots to learn and having fun doing it!

gbrtng · 08-29-2013

Quote:

Originally Posted by gbrtng

Check the resistance of the AC compressor coil first - should be about 3.4 ohms.
When that fuse blows, you get SYS messages and not much else works either.

More to the story - I fought an intermittent AC fuse blow condition on Mary's 91 L98 - drove me nuts for several years - turned out to be a bad clutch bearing and the clutch finally ate into the clutch coil causing a dead short to ground.
Replacing the bearing and coil fixed the problem. Did not have to replace the compressor assembly at a much higher cost - phew ...

08-27-2013	#11
emmvette Join Date: Jul 2013 Location: Central Iowa Posts: 190	Re: Electrical Gremlins? ABS A/C etc I think about everything is sorted out now - except the A/C. Keeps blowing fuses and can't find where the problem is. __________________ [CENTER][SIZE=4][COLOR=red]1990 ZR-1 Red / Red[/COLOR][/SIZE][/CENTER]

08-27-2013	#12
gbrtng Join Date: Feb 2006 Location: San Antonio area Posts: 1,179	Re: Electrical Gremlins? ABS A/C etc Check the resistance of the AC compressor coil first - should be about 3.4 ohms. When that fuse blows, you get SYS messages and not much else works either. __________________ “Buy the best example of what you want, and pay whatever it takes. That way, you cry only once.” ~ Bruce Meyer

08-27-2013	#13
batchman Join Date: Jun 2009 Location: I live at Devens, one run at a time Posts: 455	Re: Electrical Gremlins? ABS A/C etc I will say that I've found a few things "autocross related" worth mentioning: - door switches will indicate "door open" in spirited cornering - doesn't take much stress for battery connection to be "iffy" and give intermittent "sys" - hub play can lead to ABS light I always thought "I never kick into ABS", learned different when one day the only spare hub I had was from the '88. Boy did I ever make some flat spots that day. Sounds like you're on the right track though. Cheers, - Jeff __________________ [I]91 ZR-1 #1840, autocrossing in SCCA BSP. FIC S/S's DRM chip/Watson/Borla/lid/LW batt&headlights, springs, shocks, pads & lines, quick rack & Turn One, camber brace, 32/22mm sways, A/C halfway deleted 17x11 & 12 CCW's, 315 & 335 Hoosier A6s [/I]