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 swapped to an L31 intake and wired the injectors parallel like your supposed to do when you are running MPFI on a 7427, I finished it all up today and went to start it and it has spark but no fuel, good pressure but its not flashing a noid light. I also did the mem-cal mod and removed the current sensing resistors for the PnH injectors in the PCM and replaced with jumpers. I also tried with a non-modded PCM and mem-cal and still I coudnt get fuel and when trying to connect to it with TPRT it just sais connection failed after trying for about 30 seconds.
Anyone have any ideas?
Edit- In my eagerness to finish I didnt stop to think, I got it figured out, I have a broken wire somewhere, the acc. wire to the PCM has no power. Hopefully after I get it fixed it will start up. Battery is dead though so I'm gonna give it some time to charge.
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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; 08-22-2009 at 07:02 PM.
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Re: MPFI swap, no start and conection to PCM failed
Sorry I meant parallel, I always get those terms mixed up, and yes, jumpers and in place of the resistors.
Its running now, I'll attach some pictures in a minute.
__________________ 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!
