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Discussion Starter · #1 ·
I have been getting the code on the check engine light for quite a while. Sometimes it comes on, sometimes it doesn't.
Car runs fine either way. Only difference seems to be the car may stumble slightly at low speeds when accelerating. Since
the car runs fine, what can be causing the ckp to give the code ? Can it be the wiring going to the ckp sensor ? That is what I am guessing, since the car is 28 years old, and wires in several other places have had shorts. I have no idea what else it might be.
 

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Discussion Starter · #3 ·
The only code that usually comes when code 02 ckp is on is code 29 EVAP canister. The Haynes manual talks about a 2 way valve on the fuel tank, and also a 2 way valve near the canister. Have you ever replaced these ? The vacuum lines and soleniod are fine.
 

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Discussion Starter · #4 ·
No codes now for 5 days. Gas mileage average 25 mpg.
Last time codes popped up gave:
code 02 ckp
code 16 egr system
code 29 evap system
code 46 vris #2

Cleared the codes, didn't do anything to the car, and they have not returned. But I am sure they will.
 
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