Suzuku DT 65 beeping problems

jvb · 26 April 2010, 16:06

dear all,
i have recently bought a SR5.4 with a DT65 autolube - both old but well taken care of.
it starts perfectly, runs nicely.
instruments display oil level fine.
so all good so far.

here is my problem:
when i go slowly towards full throttle (at about 85%) i get a silent beep beep beep beep beep....
in this case i can go slower and all is fine again - just cant get faster.
so this is a small problem.

but when i go even harder than the beep-beep it becomes a non-stop-beeeeeeeeeeeeeeeep
and the power also dencreases a lot.
in this case a simple reduction of gas then doesnt help anymore - it gets slower and slower.
once i go back to neutral i can speed up again without problems - to about 85%.

am i just too pushy with the old lady?
or is there a problem?

during all this beeping the instruments show no problems (water, revs, oil) but i am not sure if they are wired up correctly.

the gearbox is brand new - and i had the problems already before i mounted it new.

i dont have a manual to look at to see what the beeping codes mean.

any help on this matter would be great all dealers and workshop seem pretty busy these spring days and wont help short noticed.

thank you for your comments and help,
jan

Downhilldai · 26 April 2010, 16:23

There are warning systems on the DT65 for:

Water flow (activated by a water level sensor in the cylinder head)
Water temp (on some versions, incorporated in the water level sensor)
Oil level (a sender unit inside the oil tank)
Oil flow (a small sensor within the oil filter, in the oil line out from the oil tank)
Max RPM

It sounds as if one of the first 4 is causing the buzzer to sound. The oil flow sensor and water level sensors are prone to failure, so I would check these. Muck in the oil can cause the filter gauze to block and the oil flow sensor will then activate. The sensor which has triggered should also show a warning light in the oil level monitor gauge, so that may need checking, if you don't also have a warning light. Is it the correct monitor gauge for the motor? There are different versions, which look similar.

What year is the motor? Got any photos?

jvb · 26 April 2010, 16:46

Quote:

Originally Posted by Downhilldai

Is it the correct monitor gauge for the motor? There are different versions, which look similar.

What year is the motor? Got any photos?

thank you for the reply !
i posted a photo of the plate and the engine.
i have no papers for any of them.
so i guess they are both 85' ish.
will check on the filter and cables tonight.

DM · 26 April 2010, 17:14

Quote:

Originally Posted by Downhilldai

Muck in the oil can cause the filter gauze to block

He's right.

Take the oil flow sensor off, undo the four screws and clean the filter. Try not to damage it as it's fragile and you can't buy the filter separately. Also drain and clean the oil reservoir. Strain the oil before putting it back. It can form clumps over time.

Pic of the offending article below.

Downhilldai · 26 April 2010, 17:32

The motor's 1990

Should have the older style monitor gauge with black and blue colouring on the face.

jvb · 27 April 2010, 20:32

thank you guys.
i unscrewed the oil tank, took out the sensor (was shortly confused as i thought i had to break the seals to clean it... i didnt), blew it out both ways (yummy) and put it back together.
the baby runs like new. 33kn no beeping.
just the instruments still confuse me a little.
they show the oil level fine but never any other signs.
it is the old school display with 3 green points for oil level and a rev/water symbol that could be illuminated i guess.
will take two photos of the display and its cables tomorrow.

thank you again for the great help!

jvb

Downhilldai · 28 April 2010, 01:28

Glad you got it sorted - keep an eye on that filter, as said earlier, they're prone to clogging up, but easily fixed.
On your monitor gauge, with the ignition switched on, but the motor not running, the water symbol should light up and the warning alarm should beep intermittently (notifying you that the motor has no water in the cylinder head) If this alarm does not activate, then someone may have bypassed the water sensor (these are also prone to failure, but the only remedy is really to replace the sensor unit)

DHD

jvb · 28 April 2010, 21:21

great.
all is good now.
had a look tonight when darker - the diode behind the water symbol seems to be a bit weak and the plastic is a bit torn - so i couldnt see it in the sun - that it actually does go on at the start for a bit.

so all is great.

another happy face thanks to united ribnet know how.

thank you!
jvb