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97 GLT/T5 ECU FLASH no a/c

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97 GLT/T5 ECU FLASH no a/c

Post by 1ezliving4ume » Wed Oct 14, 2015 10:57 am

Ok, I've kinda made a mess out of my car. I just recently reworked the head gasket and rebuilt a 15g turbo. While I was in there I decided to install the white injectors, a TCU and a CBV from IPD. I used the blue spring in the CBV. All new vacuum lines, radiator etc. My plan was to use a 4.4 ECU out of the 1998 T5 car.

The ECU problem, Come to fine'd out my 97 GLT already had a 4.4 in it BUT the a/c controller is a 4.3 so this ECU works like it should except I'm dumping all my boost out of the waste gate. The ECU I got from the T5 has the power that I want, its a 4.4 and the a/c is a 4.4. So, when I run the T5 ECU the a/c will not work.

So I'm stuck in the middle between A/C and no power or power and no A/C. What I need is:
A. take the T5 ECU and flash the 4.3 a/c controller on it
B. Take the GLT ECU and flash the T5 tune on it.

I would really like to flash the A/C onto the T5 ECU but I haven't a clue and the reading I've done isn't helping.

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Re: 97 GLT/T5 ECU FLASH no a/c

Post by erikv11 » Sun Dec 20, 2015 11:38 am

I'm partly to blame for this mess ... did you get the A/C sorted out yet? I know the online instructions have a steep learning curve plus you need the right hardware, it is a hassle to get going. I can flash on the A/C for you no charge, would split shipping with you, let me know. PM me here unless you still have my email from before.
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 286k
'06 S60 R, 167k
'99 Camry V6 :shock: 125k
gone: '96 NA 850 210k, '98 NA V70 182k

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Re: 97 GLT/T5 ECU FLASH no a/c

Post by tryingbe » Thu Dec 24, 2015 9:52 am

You can change the M4.4 ECU to use the M4.3 a/c.

85 GLH, 367 whp
00 Insight, 72 mpg

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