Prom needed
06-12-2008, 05:11 PM
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Prom needed Just one more step in diagnosing my issue, I want to replace my prom. Where could I find a NOS prom for my 93?
My local auto parts place couldnt find me one.
My local auto parts place couldnt find me one.
06-12-2008, 06:16 PM
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Yeah. My ecm/prom was/is under suspicion of failure. I replaced the ecm, which was a challenge enough finding one... But, reused my prom from the old computer, and the condition still exists.
06-14-2008, 06:21 PM
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www.speeddensity.org
moates.net, you could invest and get your own burner and sister chip for later down the road. And Craig Moates is a badass.
Tony.
moates.net, you could invest and get your own burner and sister chip for later down the road. And Craig Moates is a badass.
Tony.
06-14-2008, 10:59 PM
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This is what I'm contemplating on buying. It'll burn the EEPROM too, so you don't need to light-erase the PROMs, instead it'll erase them for you. 28C256 I think is the EEPROM chip (Amtel).
http://cgi.ebay.com/Dual-Powered-Wil...QQcmdZViewItem
Then get the adapter board (sadly too expensive IMO) so you don't have to unsolder the original PROM, which I did. It's a hassle, and unless you're poor like me, I don't really recommend it. I did it with my TPI too, didn't solder it back in and had no problems, but this time it wouldn't make good enough connections so I had to solder the tuned prom in.
If you have any of the aftermarket big-name chips, they come with that adapter and you just need to pop out their PROM and slap yours in
http://cgi.ebay.com/Dual-Powered-Wil...QQcmdZViewItem
Then get the adapter board (sadly too expensive IMO) so you don't have to unsolder the original PROM, which I did. It's a hassle, and unless you're poor like me, I don't really recommend it. I did it with my TPI too, didn't solder it back in and had no problems, but this time it wouldn't make good enough connections so I had to solder the tuned prom in.
If you have any of the aftermarket big-name chips, they come with that adapter and you just need to pop out their PROM and slap yours in
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06-15-2008, 09:34 PM
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well, I just bought the generic jet stg 2 chip from summit this evening. Id still like to get into tuning my own chips though. Hopefully, this clears up my issue. If not, Im kinda lost...
06-15-2008, 11:21 PM
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Even if you do decide to tune, that peice JET's chip comes on, is what you need to do your own. You burn a chip. pop theirs out, and use that housing it came in.
06-16-2008, 06:49 PM
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I didnt really research enough as far as the moates stuff goes. I just bought something generic, that is pre-programed to see if in fact my prom is failing. But, I probably will buy the moates stuff in the future
06-16-2008, 08:12 PM
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06-17-2008, 05:57 PM
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yeah.. so no change, although it does have a bit more response with the "jet" chip.
So.. I know an opti can cause a misfire, but... will the car idle to 1800rpm because of a bad opti as well? ( only have about 8,ooo miles on the msd unit.)
So.. I know an opti can cause a misfire, but... will the car idle to 1800rpm because of a bad opti as well? ( only have about 8,ooo miles on the msd unit.)
06-17-2008, 06:12 PM
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Plugs are new ngk's, wires are msd's with 8000 miles, no burns, or freys anywhere.
When scanned, the car is putting up a repeating TPS sensor error, but replaced that early on when diagnosing, and still have the error. The car will run great for 17-20 minutes( timed) and is not dependent on temp, or wether or not it idled for that 20 minutes, or driving wot for 20 minutes. I wanted to completely replace the prom, but was led to believe that was the case with the jet chip, buts it only one of those memory adapters. I still want to completely replace the stock chip, unfortunatly, they're hard to find.
When scanned, the car is putting up a repeating TPS sensor error, but replaced that early on when diagnosing, and still have the error. The car will run great for 17-20 minutes( timed) and is not dependent on temp, or wether or not it idled for that 20 minutes, or driving wot for 20 minutes. I wanted to completely replace the prom, but was led to believe that was the case with the jet chip, buts it only one of those memory adapters. I still want to completely replace the stock chip, unfortunatly, they're hard to find.
06-17-2008, 08:33 PM
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Plugs are new ngk's, wires are msd's with 8000 miles, no burns, or freys anywhere.
When scanned, the car is putting up a repeating TPS sensor error, but replaced that early on when diagnosing, and still have the error. The car will run great for 17-20 minutes( timed) and is not dependent on temp, or wether or not it idled for that 20 minutes, or driving wot for 20 minutes. I wanted to completely replace the prom, but was led to believe that was the case with the jet chip, buts it only one of those memory adapters. I still want to completely replace the stock chip, unfortunatly, they're hard to find.
When scanned, the car is putting up a repeating TPS sensor error, but replaced that early on when diagnosing, and still have the error. The car will run great for 17-20 minutes( timed) and is not dependent on temp, or wether or not it idled for that 20 minutes, or driving wot for 20 minutes. I wanted to completely replace the prom, but was led to believe that was the case with the jet chip, buts it only one of those memory adapters. I still want to completely replace the stock chip, unfortunatly, they're hard to find.
Check the TPS voltage. Should be .67. I've been running mine @ .54 w/o any problems, but plan to change it to .67 real soon.
Speed: Can you burn a prom for me, or possibly help with adjusting timing? I changed mine just slightly (timing) and I think it might have hurt more than helped. What I DID do, overall, helped a bunch though.
