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[Doug]

same here with the unique plug for each sensor ….no idea why they didn’t do it that way on this one…

so glad i was able to help someone else. i remember being really frustrated and out of options just before finding it

[Doug]

what actually fixed mine was: there are two identical sensors on the the back side (between the trans and the firewall/ attached to the trans) that have the same identical connection. I had those two connections swapped and didn’t know it. i swapped the two and it fixed everything.

hope this helps.

[Doug]

I was able to get the idle to smooth out by bleeding the coolant system. And it idled ok for a short while then went back to surging and the P2279 code came back.

I rechecked for leaks with carb cleaner and don’t find anything?

[Doug]

sorry. I accidentally double posted this thread. please delete one.

[Doug]

cool thanks.

best i tell this car doesn’t have the capillary tube type bulb….
so the test might not work the same.

[Doug]

is there any way to test the expansion valve short of just replacing it and recharging?

[Doug]

its kind of both.
you can select the exact temp you want or – in this case- i just have it on Max Cool.
It will let you scroll the temp down to a certain degree then it just hits Max.

[Doug]

i suppose I should just unwrap as much of that sensor’s lead as I can and check for continuity thru the end of the plug…..

[Author]

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