TPS and battery - Kawasaki KFX450 Forum

Duster · 04-08-2009, 04:28 PM

OK fellas... I went to check my throttle position sensor today because I have been having problems with starting, and very easy stalling... and I checked the battery first as I read to do.

The voltage was low, so I went to crank it and check it running....

Well, it wouldn't start... battery dead!
That is just my luck!
But at least it didn't happen after a stall out in the woods I guess.
Reads 11.0 Volts

So what is the deal?
Never properly charged?
Just needs charged already?
Needs replacing?

Also, could this thing with the battery be my whole problem?
(Poor starting & easy stalling)

If not, "where" do you guys access the wiring "at" to check things.
The TPS for one, is not in an easy spot to get to.

offroadhunter · 04-08-2009, 09:24 PM

You should keep you quad in neutral while stored...ive had mine tested and there is a draw when its in gear, that caused my battery to drain.. as for the tps.. you'd notice that much more so during a hot start.. after riding for a while it will take forever to start up..

Duster · 04-09-2009, 09:22 AM

I'll be d@mn!!!

I don't even remember rather or not it was in gear.

offroadhunter · 04-10-2009, 09:27 PM

Can't guarantee that's it but... it worked for me and a few others that have the same issue.

Duster · 04-11-2009, 11:15 PM

Well, I got the battery charged up, and it seemed to hold it, so I put it back in to see how it went.

It's about the same as it was the time BEFORE I found the battery to be dead.

Cranks the same and stalls the same, so I am going to have to look deeper....

For now, I killed it with the kill button while in neutral and set the parking brake.
I'll check it Sunday or Monday to see if it's draining.
If not, I'll assume killing in-gear did the deed to the battery.

For the cranking and stalling, the next step will be checking the EFI... starting with the TPS.

But I have to figure out how to get to the dang thing!
Any tips?

Duster · 05-24-2009, 02:02 AM

For future searchers... the best way to get to the TPS to check it is with the factory test lead.

Throttle Sensor Setting Adaptor.... part# 57001-1538

You unplug the TPS wire, plug the adapter into the TPS, then plug the wire into the other end.
It's and "in-line" plug, and provides you 3 test leads off of the wiring...
These 3 leads (W/R/

allow you to do both tests with your meter.

04-08-2009, 04:28 PM	#1 (permalink)
Duster Senior Member Join Date: Mar 2009 Location: North Carolina Posts: 139	OK fellas... I went to check my throttle position sensor today because I have been having problems with starting, and very easy stalling... and I checked the battery first as I read to do. The voltage was low, so I went to crank it and check it running.... Well, it wouldn't start... battery dead! That is just my luck! But at least it didn't happen after a stall out in the woods I guess. Reads 11.0 Volts So what is the deal? Never properly charged? Just needs charged already? Needs replacing? Also, could this thing with the battery be my whole problem? (Poor starting & easy stalling) If not, "where" do you guys access the wiring "at" to check things. The TPS for one, is not in an easy spot to get to. __________________ '00 TRX400EX A project in progress... ...brought to a screeching halt (3/09) Time for a new 450R! '08 Monster Energy KFX450R (Black) Jardine RT99 Exhaust Procom ECU (fully programmable) Holeshot GNCC's ProArmor Tether & Install Kit ProArmor PowerGRIP System ProArmor Dominator Bumper ProArmor full skid protection '99 Sport 400 Out of a time capsule... Bone stock, new condition (6/08)

04-09-2009, 09:22 AM	#3 (permalink)
Duster Senior Member Join Date: Mar 2009 Location: North Carolina Posts: 139	I'll be d@mn!!! I don't even remember rather or not it was in gear. __________________ '00 TRX400EX A project in progress... ...brought to a screeching halt (3/09) Time for a new 450R! '08 Monster Energy KFX450R (Black) Jardine RT99 Exhaust Procom ECU (fully programmable) Holeshot GNCC's ProArmor Tether & Install Kit ProArmor PowerGRIP System ProArmor Dominator Bumper ProArmor full skid protection '99 Sport 400 Out of a time capsule... Bone stock, new condition (6/08)

04-11-2009, 11:15 PM	#5 (permalink)
Duster Senior Member Join Date: Mar 2009 Location: North Carolina Posts: 139	Well, I got the battery charged up, and it seemed to hold it, so I put it back in to see how it went. It's about the same as it was the time BEFORE I found the battery to be dead. Cranks the same and stalls the same, so I am going to have to look deeper.... For now, I killed it with the kill button while in neutral and set the parking brake. I'll check it Sunday or Monday to see if it's draining. If not, I'll assume killing in-gear did the deed to the battery. For the cranking and stalling, the next step will be checking the EFI... starting with the TPS. But I have to figure out how to get to the dang thing! Any tips? __________________ '00 TRX400EX A project in progress... ...brought to a screeching halt (3/09) Time for a new 450R! '08 Monster Energy KFX450R (Black) Jardine RT99 Exhaust Procom ECU (fully programmable) Holeshot GNCC's ProArmor Tether & Install Kit ProArmor PowerGRIP System ProArmor Dominator Bumper ProArmor full skid protection '99 Sport 400 Out of a time capsule... Bone stock, new condition (6/08)

05-24-2009, 02:02 AM	#6 (permalink)
Duster Senior Member Join Date: Mar 2009 Location: North Carolina Posts: 139	For future searchers... the best way to get to the TPS to check it is with the factory test lead. Throttle Sensor Setting Adaptor.... part# 57001-1538 You unplug the TPS wire, plug the adapter into the TPS, then plug the wire into the other end. It's and "in-line" plug, and provides you 3 test leads off of the wiring... These 3 leads (W/R/ allow you to do both tests with your meter. __________________ '00 TRX400EX A project in progress... ...brought to a screeching halt (3/09) Time for a new 450R! '08 Monster Energy KFX450R (Black) Jardine RT99 Exhaust Procom ECU (fully programmable) Holeshot GNCC's ProArmor Tether & Install Kit ProArmor PowerGRIP System ProArmor Dominator Bumper ProArmor full skid protection '99 Sport 400 Out of a time capsule... Bone stock, new condition (6/08)

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04-08-2009, 09:24 PM	#2 (permalink)
offroadhunter Senior Member Join Date: Oct 2007 Location: Anthem, AZ Posts: 637	You should keep you quad in neutral while stored...ive had mine tested and there is a draw when its in gear, that caused my battery to drain.. as for the tps.. you'd notice that much more so during a hot start.. after riding for a while it will take forever to start up..

04-10-2009, 09:27 PM	#4 (permalink)
offroadhunter Senior Member Join Date: Oct 2007 Location: Anthem, AZ Posts: 637	Can't guarantee that's it but... it worked for me and a few others that have the same issue.

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