DIY PROMDo It Yourself PROM chip burning help. No PROM begging. No PROMs for sale. No commercial exchange. Not a referral service.
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I'm new at tuning so bear with me, I want to be able to control my fan with my PCM. Is there a way to add a output, or since I dont have AC a way to change the AC clutch enable to be temp related and not user requested and just rewire the AC clutch signal to my fan relay?
The truck was not equipped with a E-fan and does not have wiring for it.
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__________________ Dan - ASE certified-A1, A4, A5, A8 This is for all things four wheeled and fast...
95 S10 ecsb-350ci, Ported 906 vortec's, L31 intake, 9.5:1, Crane(.484/.512 216/228 112LSA), Hooker Super comps, 2.5" ORY, E-cutout, 40 series flow, 4L60E, 8.8 f*rd posi w/ 3.73's, 7427 PCM, MPFI mode, $OD, WB02. - Daily Driven!
Last edited by Drumer919; 05-12-2009 at 07:59 PM.
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Knowing the ECM and code you're dealing with will help emensly.
If it's the '95 S-10 that is in your signature, I would have to, at this point, say, while it may not be impossible, it will likey be something that no one or next to no one has dealt with doing.
__________________ If you're not living on the edge, you're taking up too much space.
Sorry, it is my S10 but it is a 16197427 ECM from a 94 full size, using $OD and tuning with TunerPro
__________________ Dan - ASE certified-A1, A4, A5, A8 This is for all things four wheeled and fast...
95 S10 ecsb-350ci, Ported 906 vortec's, L31 intake, 9.5:1, Crane(.484/.512 216/228 112LSA), Hooker Super comps, 2.5" ORY, E-cutout, 40 series flow, 4L60E, 8.8 f*rd posi w/ 3.73's, 7427 PCM, MPFI mode, $OD, WB02. - Daily Driven!
Its possible to control the fan with the PCM, but this requires actually editing the software code. I have a hack for the $0D posted here on DIY-Prom that assembles, and can be edited. On the TBI board, my MAF code for the TBI/CPI PCMs has a basic fan control routine that can be applied, but with the trucks that have E-trans', the outputs are pretty much all in use. Finding something to control the relay may mean having to part with something else, like the CCP or EGR.
The other option, of course, is to change over to the MAF code. It runs better than SD on some setups. BUT, the MAF code does not support emmissions due to processing time constraints within the code.
Its possible to control the fan with the PCM, but this requires actually editing the software code. I have a hack for the $0D posted here on DIY-Prom that assembles, and can be edited. On the TBI board, my MAF code for the TBI/CPI PCMs has a basic fan control routine that can be applied, but with the trucks that have E-trans', the outputs are pretty much all in use. Finding something to control the relay may mean having to part with something else, like the CCP or EGR.
What is CCP?
__________________ Dan - ASE certified-A1, A4, A5, A8 This is for all things four wheeled and fast...
95 S10 ecsb-350ci, Ported 906 vortec's, L31 intake, 9.5:1, Crane(.484/.512 216/228 112LSA), Hooker Super comps, 2.5" ORY, E-cutout, 40 series flow, 4L60E, 8.8 f*rd posi w/ 3.73's, 7427 PCM, MPFI mode, $OD, WB02. - Daily Driven!
Ha, another thing I dont have, no emissions here in Ohio!
__________________ Dan - ASE certified-A1, A4, A5, A8 This is for all things four wheeled and fast...
95 S10 ecsb-350ci, Ported 906 vortec's, L31 intake, 9.5:1, Crane(.484/.512 216/228 112LSA), Hooker Super comps, 2.5" ORY, E-cutout, 40 series flow, 4L60E, 8.8 f*rd posi w/ 3.73's, 7427 PCM, MPFI mode, $OD, WB02. - Daily Driven!
