C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

trouble code 26

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Old Sep 26, 2005 | 12:08 AM
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Default trouble code 26

ok guys i went from three codes to 1 after eplacing the ox sensors i am still getting code 26, i have read tons of treads here trying to find a solution or some direction,, i see some things about could be three diff relays , where are they, somewhere else i read that the IAC could set the code,,,,,

any ideas tracking this down would be great... the car is running rich,,, extremely

thanks in advance
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Old Sep 27, 2005 | 08:22 PM
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with all you tech guys out there no one has ever had a code 26 come up? com on guys i need to pass inspection- here they wont even put it on the machine with the engine light on
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Old Sep 28, 2005 | 02:09 AM
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One of the "relays" it can point to is the cannister purge solenoid. Another possibility is one of the TPS wires shorted.
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Old Sep 28, 2005 | 12:26 PM
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any idea where i can find the solenoid?
thanks
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Old Sep 29, 2005 | 02:18 AM
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Originally Posted by stangetr
any idea where i can find the solenoid?
thanks
Should be on the top of the evaporative fuel cannister, if not on top, follow the lines off the cannister and they will run to it.
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Old Sep 30, 2005 | 06:52 PM
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theres some solonoid valve on top of the intake by the front , it has one vac coming from the canister and one going into the intake with 2 wires coming out of it??????????? could it be
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Old Sep 30, 2005 | 10:12 PM
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Originally Posted by stangetr
theres some solonoid valve on top of the intake by the front , it has one vac coming from the canister and one going into the intake with 2 wires coming out of it??????????? could it be
Should be it.
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Old Oct 2, 2005 | 10:02 PM
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what year is your vette?, i have the same code. mine is a 1992
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Old Oct 2, 2005 | 10:39 PM
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mines a 92 also - i think i have located the solenoid but now how do i test it? it seems to be on top of the intake right side front- two wire connection, two vac lines- any ideas?
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Old Oct 2, 2005 | 10:52 PM
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Originally Posted by stangetr
mines a 92 also - i think i have located the solenoid but now how do i test it? it seems to be on top of the intake right side front- two wire connection, two vac lines- any ideas?
Start the engine and let it run for a few minutes, the relay should be pretty warm. If it isn't, use an ohm meter between the 2 terminals on the relay. If it reads very low or infinite ohms, it is bad.
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