2005 sportsman 700 efi problem - Polaris ATV Forum
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post #1 of 27 (permalink) Old 03-12-2014, 02:24 PM Thread Starter
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2005 sportsman 700 efi problem

Hi everyone,

I have a 2005 Polaris Sporstman 700 EFI.

Issue:
- Lack of power
- engine revs slowly until it finally reaches redline.
- when in any gear, it's gutless

Here's what's been done to my quad to try to fix the issue:
- new spark plugs (old ones were black and one was a little wet)
- new spark plug wires
- checked for codes
- checked voltage on yellow wire on tps sensor (.710 volts with key on)
- checked wiring to tbap (one wire was frayed a little)
HAVE REPLACED TBAP WIRING WITH OTB's WIRING HARNESS AND THERE'S NO DIFFERENCE SO FAR.

This issue seems to have started after the quad was ridden in heavy rain. This was at the end of last summer. Haven't had time to fix it till now.

Any help would be greatly appreciated.

Last edited by vroompsh; 07-26-2014 at 05:45 PM. Reason: spelling
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post #2 of 27 (permalink) Old 03-12-2014, 03:41 PM
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Have u checked the air filter and by the sounds of the plugs your running rich. Maybe you got water in the gas. Im not to familiar with efi so hopefully someone else will chime in to futher assist u.

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post #3 of 27 (permalink) Old 03-12-2014, 03:45 PM Thread Starter
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I've checked my K&N filter. I've even ran it quickly without a filter. Same issue. I've cleaned out the tank and put in new fuel. I've also installed a new airtex fuel pump since I thought that was the issue at first.
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post #4 of 27 (permalink) Old 03-12-2014, 06:00 PM Thread Starter
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Does anyone know what voltage is supposed to come out of the wires going to the tbap? My harness has a pink, pink with white stripe, purple, and orange wires. I'd like to rule out any broken wires. When I tested these wires for voltage, only two of the wires registered any voltage. The other two had none at all. I'm just wondering if those two wires are broken, or if those two wires are supposed to have 0 volts. This testing was done with the key in the on position.
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post #5 of 27 (permalink) Old 03-13-2014, 04:47 PM Thread Starter
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I figured something out today. I unplugged the coolant sensor and the bike started running almost perfectly. Going to test the sensor tomorrow.
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post #6 of 27 (permalink) Old 03-14-2014, 03:13 PM Thread Starter
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Replaced the coolant thermistor and made no difference. Still runs perfectly if I disconnect the plug to this sensor. Does anyone have any ideas?

Last edited by vroompsh; 03-14-2014 at 03:22 PM.
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post #7 of 27 (permalink) Old 07-26-2014, 05:42 PM Thread Starter
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Thought I'd bump this thread since I still haven't figured out the issue yet...
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post #8 of 27 (permalink) Old 07-26-2014, 07:20 PM
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Is there a possibility there could be an air lock around the sensor location? I have read somewhere that you need to bring the front end of the wheeler up higher than the rear to burp air through the cooling system.
I feel your pain as I have an issue I need to resolve and have not had any responses either.
Good Luck!!
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post #9 of 27 (permalink) Old 07-26-2014, 07:23 PM Thread Starter
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Quote:
Originally Posted by 71Gibby View Post
Is there a possibility there could be an air lock around the sensor location? I have read somewhere that you need to bring the front end of the wheeler up higher than the rear to burp air through the cooling system.
I feel your pain as I have an issue I need to resolve and have not had any responses either.
Good Luck!!

Wouldn't that just cause the machine to overheat?
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post #10 of 27 (permalink) Old 07-30-2014, 07:55 AM Thread Starter
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bump
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