issues with a/c compressor and speedo. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

smdodgers · 07-15-2012, 07:46 PM

Well, I swapped my s13 redtop sr about 4 months ago. when i plug in the speed sensor the speedo reads double the speed im going.
if im going 20 it says 40..so on and it maxes out on 60 mph. which reads 120 on the dash. it has a fuel cut off after that. any ideas?

i also have an A/c issue. I had custom lines made to fit the compressor on my sr. the thing is that the ac button has a green light which should mean it has a connection but everytime i turn on the a/c i blow a fuse immediately. the a/c was working fine when i was filling it up with freon. but then after that it just keeps blowing fuses. what could it be?

240sx s14 95' SE
with s13 redtop sr20det swap.

thanks for viewing.

codyace · 07-15-2012, 07:48 PM

Stinks you didn't have a custom setup by me to make it all work.

In order to fix your setup you need to decide and determine what lines control what off the TP switch. Once you determine that I can help you out.

smdodgers · 07-15-2012, 07:54 PM

how can i get a custom setup by you sir?

smdodgers · 07-15-2012, 08:02 PM

Oh i saw your page, but the lines are already connected and have freon. I just need to know why it keeps on blowing fuses

Agamemnon · 07-15-2012, 08:25 PM

Your speed reads double because you're using an S13 speedo sensor on an S14 cluster. Get your self an S14 sensor and all should be well.

smdodgers · 07-15-2012, 08:34 PM

Quote:

Originally Posted by Agamemnon

Your speed reads double because you're using an S13 speedo sensor on an S14 cluster. Get your self an S14 sensor and all should be well.

just the plug itself? because i ordered a lower harness from wiring specialties

Agamemnon · 07-15-2012, 09:28 PM

Quote:

Originally Posted by smdodgers

just the plug itself? because i ordered a lower harness from wiring specialties

What plug are you referring to?

S14 sensor for an S14 cluster.

smdodgers · 07-15-2012, 09:48 PM

Quote:

Originally Posted by Agamemnon

Your speed reads double because you're using an S13 speedo sensor on an S14 cluster. Get your self an S14 sensor and all should be well.

Quote:

Originally Posted by Agamemnon

What plug are you referring to?

S14 sensor for an S14 cluster.

oh naw nvm i get you now. i have to put an s14 speed sensor. well that solves that lol.

now the ac....

ultimateirving · 07-17-2012, 04:36 PM

My little a/c box was shorting out and causing the green light to pop on and off inconsistently. I bought a new box and that fixed my issue, But other wise you need to track down the a/c(compressor power) switch wire, and find out where the short is.

Make sure its plugged into your compressor too, if it came out and the lead is touching grounds it could pop fuses

07-15-2012, 07:46 PM	#1
smdodgers Leaky Injector Join Date: Oct 2011 Location: miami Age: 32 Posts: 126 Trader Rating: (0) Feedback Score: 0 reviews	issues with a/c compressor and speedo. Well, I swapped my s13 redtop sr about 4 months ago. when i plug in the speed sensor the speedo reads double the speed im going. if im going 20 it says 40..so on and it maxes out on 60 mph. which reads 120 on the dash. it has a fuel cut off after that. any ideas? i also have an A/c issue. I had custom lines made to fit the compressor on my sr. the thing is that the ac button has a green light which should mean it has a connection but everytime i turn on the a/c i blow a fuse immediately. the a/c was working fine when i was filling it up with freon. but then after that it just keeps blowing fuses. what could it be? 240sx s14 95' SE with s13 redtop sr20det swap. thanks for viewing.

07-15-2012, 07:48 PM	#2
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 40 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	Stinks you didn't have a custom setup by me to make it all work. In order to fix your setup you need to decide and determine what lines control what off the TP switch. Once you determine that I can help you out. __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

07-17-2012, 04:36 PM	#9
ultimateirving Zilvia FREAK! Join Date: Nov 2010 Location: arizona Age: 37 Posts: 1,521 Trader Rating: (1) Feedback Score: 1 reviews	My little a/c box was shorting out and causing the green light to pop on and off inconsistently. I bought a new box and that fixed my issue, But other wise you need to track down the a/c(compressor power) switch wire, and find out where the short is. Make sure its plugged into your compressor too, if it came out and the lead is touching grounds it could pop fuses __________________ Z32 with lq4 swap Desert Street Scene \|\| Dssevents.com

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07-15-2012, 07:54 PM	#3
smdodgers Leaky Injector Join Date: Oct 2011 Location: miami Age: 32 Posts: 126 Trader Rating: (0) Feedback Score: 0 reviews	how can i get a custom setup by you sir?

07-15-2012, 08:02 PM	#4
smdodgers Leaky Injector Join Date: Oct 2011 Location: miami Age: 32 Posts: 126 Trader Rating: (0) Feedback Score: 0 reviews	Oh i saw your page, but the lines are already connected and have freon. I just need to know why it keeps on blowing fuses

07-15-2012, 08:25 PM	#5
Agamemnon Post Whore! Join Date: Sep 2003 Location: Lake Stevens, WA Age: 42 Posts: 2,667 Trader Rating: (20) Feedback Score: 20 reviews	Your speed reads double because you're using an S13 speedo sensor on an S14 cluster. Get your self an S14 sensor and all should be well.