DT/tclh 140 won't Idle

[bartow buddy]

Once you have adjusted air mix screws the same, then try to set tps, by manual if able. If not able by manual, can try as I did, but need to use ohm meter add I did.

My motors are efi, I don't adjust my tps the same as manual/ how you are trying to. Your tps its set according to all 4 butterflies, mine had only the one (if all yours are moving identically, use the one the tps is connected to).

I set mine by ohms, my wot is 440 (yours may read different ohms at wot?), and (throttle cable disconnected), my ohms at idle 210. With throttle connected idle is at 220, half of my wot reading. Basically by my manual, if I remember correctly, my butterfly is set at 3° open, and the tps is supposed to read 3 volts, but that required the jumper wire that connects the volt meter inline between tps and the ecm to measure volts, but I didn't have the jumper write, so I improvised. I had two motors, so I matched my other motor by the ohms at wot, and at idle.

For your motor, I would connect the ohm meter, max out the throttle (key off - not running) adjust tps to highest reading, snug the screws down, return to idle, check ohms, (should read half wot, if not, get as close as you can. disconnect throttle check ohms (mine is 10 ohms less than idle). You might need to adjust the idle stop screw if over 10 ohms to prevent overrevving. Good luck, let us know how you're doing.

Hope the emergency is ok, and everything is better.
When able to get back just let us know how you're doing. Good luck.

My emergency is working itself out maybe after tomorrow I will see the light at the end of the tunnel. does wot mean wide open throttle? Thanks

[bartow buddy]

Solarman is there two different TPS sensors used? one for EFI and one for Carbed motors? because If, this motor is an 87' and a carburated model his TPS may not have Potentiometers in it to set with an ohlm meter, he may have the same one I, do that is simply an on/off signal switch that bumps the timing 5 degrees at 3 degrees advance throttle, and then again at 20 degrees, I, usually set mine with a continuity meter.

How do you use a continuity meter to set them? Thanks

[bartow buddy]

Well got back on it today and the top 2 cylinder are not firing at all, no spark is it the coils under the flywheel or the CDI box?

[Solarman]

dt140, carbs, running issues

Ellis, did you replace the coils that had bad leads, or just the leads? Did you get your manual? You had fire/ spark jumping on #2 lead, now no spark, correct? Have you changed anything since working on the coils? Have you checked plug connectors for all the wires under the flywheel for corrosion/ good connection?
Your one cdi unit sends current to all 4 plugs one at a time, according to the pulse coils/ trigger coils. If the cdi is sending to any plugs, then it is ok.
Let us know if you changed anything.

[bartow buddy]

Ellis, did you replace the coils that had bad leads, or just the leads? Did you get your manual? You had fire/ spark jumping on #2 lead, now no spark, correct? Have you changed anything since working on the coils? Have you checked plug connectors for all the wires under the flywheel for corrosion/ good connection?
Your one cdi unit sends current to all 4 plugs one at a time, according to the pulse coils/ trigger coils. If the cdi is sending to any plugs, then it is ok.
Let us know if you changed anything.

Yes I replaced the coils and yes got the manual and an ohm tester and it looks like that the tps. and idle speed control are bad no reading at all on 3 positions on idle control and incorrect readings on the tps. and looking at the manual and not ever using an ohm tester before I can't figure how to interpret the diagram on the connections for the secondary coils. I did set the gear counter at .003 and moved the idle speed switch back and forth but nothing else that I can think of. Thanks

[Solarman]

dt140, running issues

Ellis, If sure they're bad, I'd take a photo of wiring connections, and mounting if need to. Then take the parts with me to a Suzuki dealer to match up, and while there ask if they can test to make sure. And ask if there's an easy way to set the tps up. They might give a few pointers? unless you plan to order online?
Good luck, let us know what happens.

[bartow buddy]

I'm waiting on parts will post asap.

[Solarman]

dt,140, carbs, running issues.

We hear you Ellis, just post us when parts are installed and able.
Good luck, merry Christmas, happy holidays. Ralph

[bartow buddy]

We hear you Ellis, just post us when parts are installed and able.
Good luck, merry Christmas, happy holidays. Ralph

Merry Christmas to you all and happy new year. Ellis