So I Beleive I Just Solved The Infamous S14 Tach Glitch - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Sileighty_85 · 11-28-2010, 12:25 PM

Sorry Guys I like to tell stories on how i figure shit out haha

The Story:
So while ago I noticed my Tach was glitching (bouncing around and reading way higher than I was actually reving at) while Im driving and then began to just Peg out at 8K as soon as the engine starts.

I knew it was Tach related and not wiring cuz if i hit the dash it would Peg out if it was bouncing around.

So i pulled it out today to check it out and see if I could find anything oblivious wrong with it.

Well couldnt see anything that stood out so with the engine running and custer pluged in I was doing the "Wiggle Test" well when i was screwing in the Tach "Signal" screw I noticed that the Tach would jump.

Pulled out the Tach and inspected the Signal screw solder points to see that i looked like the Solder points were cracked.

The Fix:

Just took a Soldering Iron to the solder joints of the screw plate and bam she worked again! Dont Add Solder just "Re-Melt" Them

So if you got this issue try this before trying to source a "Newer" Tach.
Its Free and Easy

FYI: This was for a Kouki S14, Not sure if the Zenki is the same way, But just look for the Words "Sig" on the top side of the board

Ceepo · 11-28-2010, 12:28 PM

Nice, good write up, ill keep this in mine if my tach does this ever, i havn't had any issues with it yet...

holemilk00 · 11-28-2010, 12:49 PM

sweet the car I just bought is doing the same thing, I'll have to try this out. haha

Sileighty_85 · 11-28-2010, 01:02 PM

Quote:

Originally Posted by holemilk00

sweet the car I just bought is doing the same thing, I'll have to try this out. haha

Let me know if this works to see if its just not mine

sal240sx · 11-28-2010, 02:45 PM

Mine started doing the same thing recently, was just too lazy to inspect. Thanks for the heads up.

redline racer510 · 11-28-2010, 08:31 PM

on the topic of tachs what did you do to have the correct tach readout for your rb swapped s14 sileighty?

Sileighty_85 · 11-28-2010, 10:07 PM

Quote:

Originally Posted by redline racer510

on the topic of tachs what did you do to have the correct tach readout for your rb swapped s14 sileighty?

There is a Potentiometer on the Tach that you can use to adjust it.

I dialed it in by ear but think its a little off, cuz 5,000 RPM's sounds like 8,000 unless thats just how RB's are

I have an Aftermarket Tach I'll probably wire up to calibrate it better

***S14DB*** · 11-29-2010, 09:12 AM

Mine just started doing this. Going to Re-Flow that joint before I go hunting for a new tach...

Thank You for posting this.

Mirage · 11-29-2010, 09:32 AM

Sorry to be a killjoy but the UK guys have been doing this on SXOC for awhile

. Those UK guys get cluster problems way worse than we do.

Good info to share nonetheless, i'm sure it will help people out.

It fixed my tach bouncing like crazy between 3500-5500, but I think I overheated it because afterwards the needle was slow, I would bounce off the limiter at 7500 when the tach was only at ~6900, but if the rpms were steady they would read fine (matching with PowerFC rpm readout). I ended up mixing and matching parts from clusters I already had laying around to keep my 7000 rpm redline tach and 260 km/h speedo

Sileighty_85 · 11-29-2010, 10:32 AM

Quote:

Originally Posted by S14DB

Mine just started doing this. Going to Re-Flow that joint before I go hunting for a new tach...

Thank You for posting this.

NP

I hope if fixes your issues

Quote:

Originally Posted by Mirage

Sorry to be a killjoy but the UK guys have been doing this on SXOC for awhile

. Those UK guys get cluster problems way worse than we do.

Well i dont go on the UK fourms and not too sure how many other ppl do here.

I search quiet a bit when it started happening only to find ppl saying to source a used tach that worked.

mendozasport · 11-29-2010, 11:02 AM

i also think its a kouki only problem havent seen any zenkis doing this but dont hold that against me i could be wrong

***S14DB*** · 11-30-2010, 09:19 AM

I found this last night.

S14a speedo gauges - SXOC Bulletin Board

***S14DB*** · 12-02-2010, 03:50 PM

The Screw posts looked intact but the signal one was low on solder. The motor mounts looked to have a lot of flux on them.

I re-flowed all of them. Cooked off the flux off the motor connectors and it still acts up. It doesn't slam into the clock post and hover at 8k. It only goes to 7k. idles about 1k lower too at 2500-3k. I think I'm going to give up and hunt for a new tach.

Sileighty_85 · 12-02-2010, 04:56 PM

damn that sucks to hear I was hoping that would be it.

Maybe just on some tachs?

But hell still worth a shot before getting another one

P-Funk alot · 12-06-2010, 04:00 PM

i have pretty much the same problem bouncing tach imma try this tomorrow afternoon and see if it the issue. i kind of figured it to be something like this seeing as how on cold days it will work. but as it heats up it starts getting all jumpy. ill do a step by step write up with pictures to help out.

***S14DB*** · 12-06-2010, 04:11 PM

I put another cluster in and it reads fine. Guess I have to go tach shopping.

holemilk00 · 12-06-2010, 04:35 PM

Ok I did this, and it fixed my problem. All I had to do was basically touch my iron to the contacts and pull away. I put the cluster back in and it works great. Thanks again man, good find.

koukistylejdm · 12-08-2010, 08:36 PM

hope it could work on a silvia kouki it does the exact same problem sometimes hit 8k on idle n stuff like that i will try it

jtmny1999 · 12-09-2010, 06:26 PM

Good info thanks!

SLEEPYDUB · 05-16-2011, 12:05 AM

Pat, what about if your gauge works just fine, but just reads higher than the actual rpms? It seems to work fine, but when its at say 2000rpm, its readying around 4000, and it even gets into redline with normal driving, i mean its way off. Do you think this could be the fix for that too?

DriftEmperor88 · 06-21-2011, 06:45 PM

Your fuckn awesome. I would love to keep reading about your stories

for they will help me in the future!!

Sileighty_85 · 06-21-2011, 06:58 PM

haha thanks guys, unfortunately it seems like it was only a temp fix for me

Mine started messing up again a few months ago, I pulled the Tach again and re-flowed all the major points again, but no luck, I think It might be an issue with the tach motor

Im thinking about trying to use some Zenki components to see if I can fix the Kouki one since Kouki clusters are more scarce/expensive

EDIT: NVR mind didnt realize the Zenki Cluster was so different

DriftEmperor88 · 06-29-2011, 08:27 PM

damn that sucks. Well i just fixed mine. lets hope mine last forever!!

oh yeah and for the guy above me. mine was doing that for a little while and then start jumping all over the place again. so it might just work. doesn't hurt to give it a try unless you totally just blow and mess everything up haha. its pretty simple but takes time 15mins for me.

Okinawandrifter87 · 05-17-2012, 02:56 PM

Has anyone ever come up with an official solution to this problem? Yes I know you can just replace the cluster, however Im not just looking to replace the problem I would like to actually fix and solve it.

240zach · 05-18-2012, 09:35 PM

@Sileighty_85

check out my thread if you could and put in your .02.. cause i have no idea wtf is goin on. lol

http://zilvia.net/f/tech-talk/448700...ach-issue.html

Okinawandrifter87 · 05-20-2012, 02:25 PM

Hey Sileighty did you try this as well?

http://zilvia.net/f/s-chassis/382091...-problems.html

240zach · 05-20-2012, 07:05 PM

^^wtf are you doing? just posting stupid shit?

Breitling · 07-17-2012, 07:39 PM

Quote:

Originally Posted by Sileighty_85

Sorry Guys I like to tell stories on how i figure shit out haha

The Story:
So while ago I noticed my Tach was glitching (bouncing around and reading way higher than I was actually reving at) while Im driving and then began to just Peg out at 8K as soon as the engine starts.

I knew it was Tach related and not wiring cuz if i hit the dash it would Peg out if it was bouncing around.

So i pulled it out today to check it out and see if I could find anything oblivious wrong with it.

Well couldnt see anything that stood out so with the engine running and custer pluged in I was doing the "Wiggle Test" well when i was screwing in the Tach "Signal" screw I noticed that the Tach would jump.

Pulled out the Tach and inspected the Signal screw solder points to see that i looked like the Solder points were cracked.

The Fix:

Just took a Soldering Iron to the solder joints of the screw plate and bam she worked again! Dont Add Solder just "Re-Melt" Them

So if you got this issue try this before trying to source a "Newer" Tach.
Its Free and Easy

FYI: This was for a Kouki S14, Not sure if the Zenki is the same way, But just look for the Words "Sig" on the top side of the board

Old thread bump.... what points is he referring to?

Skilz10179 · 07-23-2012, 07:27 AM

Quote:

Originally Posted by Breitling

Old thread bump.... what points is he referring to?

Probably the two with red circles around them...

1slowsilvia · 07-23-2012, 02:43 PM

THANK YOU THANK YOU THANK YOU!

I was was in doubt like man this isnt gonna work

reflowed and it kept small hope.... and bam worked!

you are the man!

11-28-2010, 12:25 PM	#1
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	So I Beleive I Just Solved The Infamous S14 Tach Glitch Sorry Guys I like to tell stories on how i figure shit out haha The Story: So while ago I noticed my Tach was glitching (bouncing around and reading way higher than I was actually reving at) while Im driving and then began to just Peg out at 8K as soon as the engine starts. I knew it was Tach related and not wiring cuz if i hit the dash it would Peg out if it was bouncing around. So i pulled it out today to check it out and see if I could find anything oblivious wrong with it. Well couldnt see anything that stood out so with the engine running and custer pluged in I was doing the "Wiggle Test" well when i was screwing in the Tach "Signal" screw I noticed that the Tach would jump. Pulled out the Tach and inspected the Signal screw solder points to see that i looked like the Solder points were cracked. The Fix: Just took a Soldering Iron to the solder joints of the screw plate and bam she worked again! Dont Add Solder just "Re-Melt" Them So if you got this issue try this before trying to source a "Newer" Tach. Its Free and Easy FYI: This was for a Kouki S14, Not sure if the Zenki is the same way, But just look for the Words "Sig" on the top side of the board __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

11-28-2010, 12:28 PM	#2
Ceepo Nissanaholic! Join Date: Jan 2008 Location: Cedar City, Utah Posts: 2,007 Trader Rating: (9) Rides Gallery: Ceepo Feedback Score: 9 reviews	Nice, good write up, ill keep this in mine if my tach does this ever, i havn't had any issues with it yet... __________________ TW: http://zilvia.net/f/cars-sale/390459...d9s-coils.html

11-28-2010, 12:49 PM	#3
holemilk00 Nissanaholic! Join Date: Oct 2006 Location: Cape Coral, FL Posts: 2,485 Trader Rating: (33) Feedback Score: 33 reviews	sweet the car I just bought is doing the same thing, I'll have to try this out. haha __________________ I had a cool signature

11-29-2010, 09:12 AM	#8
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	Mine just started doing this. Going to Re-Flow that joint before I go hunting for a new tach... Thank You for posting this. __________________ Comments should be taken as Opinions not as Statements of Fact

11-30-2010, 09:19 AM	#12
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	I found this last night. S14a speedo gauges - SXOC Bulletin Board __________________ Comments should be taken as Opinions not as Statements of Fact

11-28-2010, 02:45 PM	#5
sal240sx Leaky Injector Join Date: May 2003 Location: McAllen, Tx Posts: 53 Trader Rating: (0) Feedback Score: 0 reviews	Mine started doing the same thing recently, was just too lazy to inspect. Thanks for the heads up.

11-28-2010, 08:31 PM	#6
redline racer510 Zilvia FREAK! Join Date: Dec 2007 Location: EARFF(earth for you idiots) Posts: 1,072 Trader Rating: (1) Feedback Score: 1 reviews	on the topic of tachs what did you do to have the correct tach readout for your rb swapped s14 sileighty?

11-29-2010, 09:32 AM	#9
Mirage Zilvia Member Join Date: Jul 2003 Location: Greenville, SC Posts: 225 Trader Rating: (7) Feedback Score: 7 reviews	Sorry to be a killjoy but the UK guys have been doing this on SXOC for awhile . Those UK guys get cluster problems way worse than we do. Good info to share nonetheless, i'm sure it will help people out. It fixed my tach bouncing like crazy between 3500-5500, but I think I overheated it because afterwards the needle was slow, I would bounce off the limiter at 7500 when the tach was only at ~6900, but if the rpms were steady they would read fine (matching with PowerFC rpm readout). I ended up mixing and matching parts from clusters I already had laying around to keep my 7000 rpm redline tach and 260 km/h speedo

11-29-2010, 11:02 AM	#11
mendozasport Zilvia Member Join Date: Nov 2003 Location: orlando Fl. Age: 52 Posts: 202 Trader Rating: (2) Feedback Score: 2 reviews	i also think its a kouki only problem havent seen any zenkis doing this but dont hold that against me i could be wrong

12-02-2010, 03:50 PM	#13
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	The Screw posts looked intact but the signal one was low on solder. The motor mounts looked to have a lot of flux on them. I re-flowed all of them. Cooked off the flux off the motor connectors and it still acts up. It doesn't slam into the clock post and hover at 8k. It only goes to 7k. idles about 1k lower too at 2500-3k. I think I'm going to give up and hunt for a new tach. __________________ Comments should be taken as Opinions not as Statements of Fact

12-02-2010, 04:56 PM	#14
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	damn that sucks to hear I was hoping that would be it. Maybe just on some tachs? But hell still worth a shot before getting another one __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

12-06-2010, 04:00 PM	#15
P-Funk alot Zilvia Addict Join Date: Sep 2009 Location: 909 Age: 38 Posts: 831 Trader Rating: (7) Feedback Score: 7 reviews	i have pretty much the same problem bouncing tach imma try this tomorrow afternoon and see if it the issue. i kind of figured it to be something like this seeing as how on cold days it will work. but as it heats up it starts getting all jumpy. ill do a step by step write up with pictures to help out.

12-06-2010, 04:11 PM	#16
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	I put another cluster in and it reads fine. Guess I have to go tach shopping. __________________ Comments should be taken as Opinions not as Statements of Fact

12-06-2010, 04:35 PM	#17
holemilk00 Nissanaholic! Join Date: Oct 2006 Location: Cape Coral, FL Posts: 2,485 Trader Rating: (33) Feedback Score: 33 reviews	Ok I did this, and it fixed my problem. All I had to do was basically touch my iron to the contacts and pull away. I put the cluster back in and it works great. Thanks again man, good find. __________________ I had a cool signature

12-08-2010, 08:36 PM	#18
koukistylejdm Zilvia Member Join Date: May 2009 Location: Baie-comeau Qc Age: 37 Posts: 256 Trader Rating: (2) Feedback Score: 2 reviews	hope it could work on a silvia kouki it does the exact same problem sometimes hit 8k on idle n stuff like that i will try it

12-09-2010, 06:26 PM	#19
jtmny1999 Leaky Injector Join Date: Dec 2010 Location: So cal Posts: 82 Trader Rating: (5) Feedback Score: 5 reviews	Good info thanks!

05-16-2011, 12:05 AM	#20
SLEEPYDUB Zilvia Junkie Join Date: Feb 2011 Location: Shreveport, LA Age: 38 Posts: 446 Trader Rating: (11) Feedback Score: 11 reviews	Pat, what about if your gauge works just fine, but just reads higher than the actual rpms? It seems to work fine, but when its at say 2000rpm, its readying around 4000, and it even gets into redline with normal driving, i mean its way off. Do you think this could be the fix for that too?

06-21-2011, 06:45 PM	#21
DriftEmperor88 Leaky Injector Join Date: Nov 2008 Location: Salem Age: 35 Posts: 67 Trader Rating: (4) Feedback Score: 4 reviews	Your fuckn awesome. I would love to keep reading about your stories for they will help me in the future!!

06-21-2011, 06:58 PM	#22
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	haha thanks guys, unfortunately it seems like it was only a temp fix for me Mine started messing up again a few months ago, I pulled the Tach again and re-flowed all the major points again, but no luck, I think It might be an issue with the tach motor Im thinking about trying to use some Zenki components to see if I can fix the Kouki one since Kouki clusters are more scarce/expensive EDIT: NVR mind didnt realize the Zenki Cluster was so different __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

06-29-2011, 08:27 PM	#23
DriftEmperor88 Leaky Injector Join Date: Nov 2008 Location: Salem Age: 35 Posts: 67 Trader Rating: (4) Feedback Score: 4 reviews	damn that sucks. Well i just fixed mine. lets hope mine last forever!! oh yeah and for the guy above me. mine was doing that for a little while and then start jumping all over the place again. so it might just work. doesn't hurt to give it a try unless you totally just blow and mess everything up haha. its pretty simple but takes time 15mins for me.

05-17-2012, 02:56 PM	#24
Okinawandrifter87 Post Whore! Join Date: Jun 2006 Location: Sacramento, CA Posts: 3,959 Trader Rating: (22) Feedback Score: 22 reviews	Has anyone ever come up with an official solution to this problem? Yes I know you can just replace the cluster, however Im not just looking to replace the problem I would like to actually fix and solve it. __________________ Driftphreak87

05-18-2012, 09:35 PM	#25
240zach Zilvia Addict Join Date: Sep 2010 Location: 916 Posts: 941 Trader Rating: (10) Feedback Score: 10 reviews	@Sileighty_85 check out my thread if you could and put in your .02.. cause i have no idea wtf is goin on. lol http://zilvia.net/f/tech-talk/448700...ach-issue.html

05-20-2012, 02:25 PM	#26
Okinawandrifter87 Post Whore! Join Date: Jun 2006 Location: Sacramento, CA Posts: 3,959 Trader Rating: (22) Feedback Score: 22 reviews	Hey Sileighty did you try this as well? http://zilvia.net/f/s-chassis/382091...-problems.html __________________ Driftphreak87

05-20-2012, 07:05 PM	#27
240zach Zilvia Addict Join Date: Sep 2010 Location: 916 Posts: 941 Trader Rating: (10) Feedback Score: 10 reviews	^^wtf are you doing? just posting stupid shit?

07-23-2012, 02:43 PM	#30
1slowsilvia Zilvia Junkie Join Date: May 2012 Location: Palm Bay, FL Age: 36 Posts: 310 Trader Rating: (0) Feedback Score: 0 reviews	THANK YOU THANK YOU THANK YOU! I was was in doubt like man this isnt gonna work reflowed and it kept small hope.... and bam worked! you are the man!