Fazer Owners Club - Unofficial

Bikes, Hints'n'Tips => Fazer 1000/FZ1 corner => Topic started by: Don71uk on 29 July 2021, 04:32:49 pm

Title: Rev counter
Post by: Don71uk on 29 July 2021, 04:32:49 pm: Hi, looking for advice.

2001, FZS1000 Fazer, 89k on the clock and based the UK.

Been out riding for two days, first day ok, second day the tacho-Rev counter shows the revs, but suddenly drops to zero, engine all ok still running, then after a few seconds tacho Rev counter back to normal. This does not happen all the time, occurred about 10 times in a fifty mile ride. Nno other tacho Rev counter error codes, like the 3k , 7k etc. Speedo, lights, turn signals, neutral lights all working, clock keeping time, mileage working ok. Any ideas? Before I start pulling things apart,

thanks,

Don.

[cleaned up the html - bkd]
Title: Re: Rev counter
Post by: FazThou on 29 July 2021, 05:21:52 pm: You could check the big white connector under the left fairing infil as these are prone to corrosion
Pull the connector apart and spray some contact cleaner in both sides and see if there is any difference
Title: Re: Rev counter
Post by: Don71uk on 29 July 2021, 05:45:33 pm: Yer, I did think about that, so tomorrow I’ll have look.
Title: Re: Rev counter
Post by: Gnasher on 29 July 2021, 05:48:26 pm: Check the EXUP valve, I know the manual states it should jump from 0 - 7k and back to engine rpm then 3 secs and 0 - 7k etc but they don't always. The usual suspect is the EXUP valve sticking, start there.
Title: Re: Rev counter
Post by: Don71uk on 02 August 2021, 05:54:26 pm: Looked at the white connector a little bit of white oxide on the contacts so cleared with contact cleaner, and re connected. Short 40 miles and all appears to be ok,

Only time will tell.

Exup all ok.
Title: Re: Rev counter
Post by: Gnasher on 02 August 2021, 06:19:26 pm: Quote from: Don71uk on 02 August 2021, 05:54:26 pm
Looked at the white connector a little bit of white oxide on the contacts so cleared with contact cleaner, and re connected.

Yep, that will give you the same behaviour.

Quote from: Don71uk on 02 August 2021, 05:54:26 pm
Exup all ok.

:thumbup
Title: Re: Rev counter
Post by: FazThou on 02 August 2021, 07:10:57 pm: Quote from: Don71uk on 02 August 2021, 05:54:26 pm

Looked at the white connector a little bit of white oxide on the contacts so cleared with contact cleaner, and re connected. Short 40 miles and all appears to be ok,

Only time will tell.

Exup all ok.

:thumbup :thumbup :thumbup
Title: Re: Rev counter
Post by: Don71uk on 23 September 2021, 06:22:18 am: Update, problem still exists, cut out the white connector and joined the wires soldering in new sections, but the tacho is still jumping around.

I have noticed that when the riding the engine sometimes feels a bit woolly, as if there is a lack of power or someone has touched the brakes, the bike does not slow down, there is no misfire pops bangs and it only lasts for a second or two then eventhing is back to normal. It feels if it is electrical rather than mechanical if you know what I mean.

any ideas?
Title: Re: Rev counter
Post by: unfazed on 23 September 2021, 03:10:01 pm: Test your TPS with a meter, they can go a bit off internally. You need to test it carefully with a Meter, the resistance should move smoothly up through the range with no jumping from. If there is any doubt change it. The one from the DR400 fits and is usually half the price of the Yamaha one. You will need to swap a wire in the plug and I posted a "How to" int the downloads section.
Yamaha Part Number is 4XY–85885–00 and compatible Suzuki Part Number is 13580-21F00
https://foc-u.co.uk/index.php?action=downloads;sa=view;down=65
Title: Re: Rev counter
Post by: Don71uk on 02 November 2021, 02:59:45 pm: Been a while, but I think the problem is fixed.

Thanks to unfazed who mention that the TPS can go off, well on checking mine it was completely wanked., the readings both for the static test were higher that should be, and the test when you twist the throttle we’re all over the space, jumping from anything from 3 to 18 k ohms.

So looked for a TPS on eBay but nothing apart from one in Germany £120 plus postage, unknown make, so I bit the bullet and got an OEM one from Fowler’s £150 delivered.

All fitted and have had a couple of rides now, the tacho is behaving itself, but the biggest difference is that the bike, now at nearly 90,000 miles feels like a new bike, the throttle pickup is so smooth, guess the TPS has been on the way out for sometime.

Thanks for the advice,

Don. :)
Title: Re: Rev counter
Post by: FazThou on 02 November 2021, 06:11:15 pm: Glad you got it sorted mate
Shame you had to buy a brand new one but at least it will last for a good while
Title: Re: Rev counter
Post by: Don71uk on 02 November 2021, 06:51:17 pm: Hope so, not bad for a 20 year old bike.
Title: Re: Rev counter
Post by: teecee90 on 04 November 2021, 03:03:46 pm: I managed to pick up and OEM TPS for £30 on Ebay a few months ago. It sits in my spare parts tin.... :D
Title: Re: Rev counter
Post by: Don71uk on 04 November 2021, 03:21:45 pm: Nothing when I looked on eBay, Fowler’s only have 2 left now, csml the Dutch parts company don’t have any.
Title: Re: Rev counter
Post by: NitramA on 04 November 2021, 04:55:32 pm: I assume that the TPS is different between the FZS and FZ1?
There are a couple on eBay at a reasonable price
Title: Re: Rev counter
Post by: Don71uk on 04 November 2021, 06:35:15 pm: Yes different