EATC only blowing on high

[01BADMERC]

So I cannot shut off my heat. Only high works. So I pulled the blower resistor. Ordered new. From what I read this seems to be the culprit. All vacuum lines look good. Is there possible something else? http://uploads.tapatalk-cdn.com/20160413/e440a9c3421f6a66246c7addc76efc 6e.jpg

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[01BADMERC]

So I cannot shut off my heat. Only high works. So I pulled the blower resistor. Ordered new. From what I read this seems to be the culprit. All vacuum lines look good. Is there possible something else? http://uploads.tapatalk-cdn.com/20160413/e440a9c3421f6a66246c7addc76efc 6e.jpg

Sent from my XT1585 using Tapatalk
Pigtail looks good as well..

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[fastblackmerc]

Let's see the other side.

Did you try tapping it to see if it worked?

[01BADMERC]

Let's see the other side.

Did you try tapping it to see if it worked?
43596

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[01BADMERC]

And &%$@ !! I Should have tried the tapping on it first. The screws were loose so not sure if some moisture got in there.

[01BADMERC]

Also going to replace both hoses coming out of heater core but cant seem to find a part #.??

[fastblackmerc]

43596

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Solder joints don't look bad.

IMHO... could be one of two things.

1 - Bad BCM, that one looks like a aftermarket one

2 - Bad EATC

Try running the EATC self test.

[01BADMERC]

Previous owner had the EATC replaced in 2009..But ya never know. Will run the self test.

[01BADMERC]

All clear on the EATC self check.

[01BADMERC]

So upon further investigation on some maintenance records.. The EATC has been replaced twice and a vacuum leak repaired as well. Hmmm.436044360543606

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[tbone]

I could never get the self test to work, at least on my old EATC unit. I had a circuit board go bad on the old one, could not adjust temp anymore. Never tried with the new, used unit. It is almost certain to be your BCM.

[fastblackmerc]

I still think it's the BCM. I'd suggest only using a Ford replacement part. Seems the cheaper aftermarket BCM have a high failure rate.

[01BADMERC]

BCM installed and system http://www.mercurymarauder.net/forums/data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wCEAAkGBwgHBhUIBxIWFhIXFxkXGB cVFR8bGxshICUZHhcXIB8jICglHSAp IhUbJDEmJykrOi4uGx8zODMwNygtLi sBCgoKDg0OGxAQGzAkHyEtLS03Mjct LTAtKy4vNS8vMi83LysuNTctLystLS 0vLSstLy0tMC0tLS0tLy0tLS0tLf/AABEIAFAAUAMBEQACEQEDEQH/xAAaAAADAQEBAQAAAAAAAAAAAAAEBQ YDAgcA/8QANxAAAQMDAgUBBgMHBQAAAAAAAQI DEQAEBSExBhJBUWFxEyKBkaGxFDLBF SNCgpLR4QckU2Jy/8QAGgEAAgMBAQAAAAAAAAAAAAAAAwQ CBQYBAP/EADMRAAICAQMDAQYFAwUBAAAAAAECA AMRBBIhBTFBURMiYXGh0YGRscHwFTL hIyQzQnIG/9oADAMBAAIRAxEAPwDzZtuvM0pWaP8 AhrCN5d9TbiykJAOgmdY76VU9R1x0q ggZycTtVftCRmN3eGLNViq5xz/Pygk7EaCSJB0NV6dWtFgS2vGfn+8m+ lG3KmLXMQ81jk36ynkVEa667fanF1i Naah3ETalwm/xNHsLdsspdKZC9QE6nvt8agmuqZiuc Y9Zx6LFAOO8ybxd47PI2oxvpRG1dS4 yw5kFrsbsDGqeEX3GQtLqNQDEHrSJ6 yitgqeI4ujYjOYHjcAHcsqxyEghJPu n0g+lMajqG2gXVc8zlVPvlHijM2bNn kl2rBKgggSR4mrDR6hralsYYJnrF2N iK3G6eVp1WhLSKCzQLNKzgYct+sd0f qKoOt81L84fRH3zHbzVrkscvGYlxLf L7qglO28pO28b1VK1lNq3XrnPPeOnD KVUxflGCjhdto/wOJSfgSKb07g6xmHkfaJ25Gl57iN2y UXFs2f+Nf2RSD4K2n4j9TGazjYPh9o pzeYvxfqtbNQSlEAmJJJE09o9HSaw7 jJMU1etNTbRGF5+z2GmLvIrgtp9zU6 mEzoN9hpStXtmayuoZ3Hn6xzKbVZvS L8blmb7iJV4uENhvkSVmJ13pq/SvVpBWOSTnjxApej3fhJJ9ZuX13J/jWpXzOlX9I2IqegAiNtm5zBHUU2rTq tCGkUFzBsY+4cvGcfdF+4JCeU7Ce1V XUKWurCr3zJ6W5Usy0Nf4iecSW8U0G wSSVq3k7mB19ZpNOnqObmz8Ie3qCrw s0xuSVYWHsHUF0yVTI1J1Mz5qOo0vt bNynb4i9HUlAKuJsMst28buH2iORK5 5SDJVG39NCOkCoyq3cj6Qn9UqLBj4z 9YA8oXV25cJSUhRBAUNdgP0pusezRU z2lbrb1st3LNs1eM3bTVu2FSg6kp02 jeh6Slq2dye/3juo1VdlACnkTCxuLS05lXrXtARoIB 9d+9GvrtswK22wWiurQneM5iQplE8v L47eKslPxkSRuOIK6imUMKpmrKaG5k GMOaTSrmLMYa0ilmaLsYWhGlA5Zgo7 mDUM7BV7mV2A4dxV5lF4i+dX+KQgLW hAASgHSCdZO3aZ0mruvptSj3+TNRT0 ahV9/3jMMzwlcWuZTYY6XOdPMmYBSNjzHaP NL3dM94Go4Hx8RXU9EywNJwPOfH89I S/wAAKtrX22QvGmunvJ92TsOYqH2oq9M UDljCr0OsDlzn8JLcRYK9wl0GLlPMC JCkCQR96BdpmpG4niL2dIuX/jO76GT6+VaeZBkeK4pxEsMp2sMEQN5 NMoYZTOmRXHnGh7IpR4s0OZFKvFnjC 1Upp1LqBJSoKAPWCDH0oVVortVz2Bn tNcKb1sPYGeo2vF2Het/xKSQo/mHLrI6E+K1gIIyJvFYMMjsZtwveIyY eyHVTnLG5CUgcqfqT/Ma7OwHjvhS54ot0Is7n2CkpcQZaDiV JcCQsQSIV7ogz1UOtenoh4ttrbE45n FWpJDDISCTJ0jlnzp9ai6B1Kt2M9Jj L4hF2kvWwAd38K8Hz5rE6XWGo7W5X9 J7V6NNQuG7+D6SPd8/I7juK0aHPImXatq3KN3E2xqLdy4Cbt RQjqoCahqGdVJQZM6iqzYY4EIYKVn9 3qJ003+FAfOOYpamG2jmHtgpMKEetK tz2itikcGFNqbLyWnlKShR95SUkkAb xHU7D59KXYHBKjJHj1MP07T0W3ZvYB V55Pf4feV9seEr55NulPIdEpBSpAPZ MkRNKUX6+gEk58nBzNvXqtNe22twT6 Zjh6zewB/F4JPuRDjfeNljyNQfh21uOn9ZU+7ce/mEev0glxx08pvlaQEq7wSflFX4urIz uH5iCwYgt7a7zd970xMqKt/U9hVJ1XrNVNZWs5J8/zzCJWSeZvehCbxaW9gogfDT9Ky9ZJQ Ew5kTxVbhjIB1Ozgn4iAfoRWj6VaWr Kn/r+hlJ1an+2wfI/tFNolbrgbaEqJgAVZWkKCx7CUxUscC UNkhzHKcYuCGnVJHIs6gd9fPeqi8re FdPeUHkRihfYuVfgkcGdXd6gsN2xcD rgJKlAzCexPXWh1Unezhdq+nx+UHru aQHOWB/gm712q6eBaaCEpGpBme3TShrTsGGbJ MR1lld6g1pjHefFSXGyhwSCIIPWvbS DkSsGVYMvBEoMbxq5jbbkyqVOISNHE 6rA/7Dr6jft1pC7phtbNJwT4Pb8PT5Ta9N 62t+KrhhzxnwftFmT/1T4ZSrmZtnHVd+VKR8yZ+lFq/+f1h/usA/MzRGojuI34K4/wAXxKtWPtGyw8ASlCoIV5BETHURSfU ujXaQC1m3r5PpIA+IOsKbUUubgwfXr UxzyJDEl+L1gob7yr7D/FXXSR77fKI9VX/b/iJPWN05avpfZMKBkVd31LYpVuxmeyU bcIfdZG5yFz7a6I0EAJEAdaSq0qULt SR1NxtxkdoXY5By0ZW2ylB5xHvDbfX 60C/TixgSSMQVF/stwIyDCbTJ3NrZlhkJJV1M6aRNAt0q WOGOeJzT6v2KsmODM0uKSgDroJ+589 4ogQFueBFtLRVbeFtbYp7n0hbruFbb 5VLuF6ar5QgeYTBgepNOirTds8/jNlTo+jjCDaT/AOuc/PP2kHnsUzYvf7VwLQdtgodpAJ+dOjI mpKqwwO4/OfcCW1y9xra/g55g6FEjokfnJ8RI+NLdTdF0dm/tg/n4+sq7Uw09Zy9yly/cUjbmNZHT14QA+k4qcyG4kug9eBsbI H1MT9AK0vS6dqFvWU3WbBlah8z+0SN Lq4ZZTMsLbcpdlgGWEtuUBlgSsIS5Q SkEVh2Ku8fb/usqz7RB3cClBxPyMKHyjzSeppub3qX wfTAwZfaHV6V/9K6tR8ccfWN2uFcI+/8AiHr1a7c6pb2PoVDcegHrVe3UtSq7 RUA3r4/L/M0tOlop5rRQfXHMbvZGwFr+At7Zr2A 05FJBnz60ktNu72jWHd65k9uTmYM32 NxjCkYW3SyVfmUIn+5qbVXXMDc5YCF CyayuWTbJ9m1qvt28n+1Wul0bWnJ7R bV6qvSpk9/Ako64SZJk960laBRgTJO7WOXbuYK25 TDLJssJbcoLLAMsIQ5QSkEVmyXaEUg ys7DtR2SOyds3TluZYUU9wNvlQ306W f3CWGm6hqNOMKcj0M3/AGzdgbpP8v8Amgf06v4yzXrr+ax+f+ INcZS6dEFUf+RFHr0FS+MyFnWr3GFA WLlrAGlWCpiVhLOdzHJgrjlHVYRVn//Z burped!! All is good in the neighborhood. Thanks for the feedback! :beer: