Computer flashed Vats deleted no fuel?
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Computer flashed Vats deleted no fuel? Like the title says I had my computer flashed and vats removed along with the emissions etc for a swap got the engine running today but only if I run power to the fuel pump. The green and white wire that is supposed to turn on the fuel pump relay has no power coming from it when the ignition is turned on I have double and triple checked that it is the correct wire from the harness but nothing. Any Ideas?
Oh and this is a 1998 ls1 ecm,harness and motor.
Oh and this is a 1998 ls1 ecm,harness and motor.
Thread Starter
Teching In
Joined: Jan 2010
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I have no anti-theft light as this is a swap into a 1951 Merc but when I hook up a code reader to it I have no codes being thrown. Motor seems to run fine so far it just is not giving me a 12 volt output on the fuel pump wire. I dont think Vats is doing it though because wouldn't Vats kill the injectors after a few seconds if I was bypassing it by hot-wiring the pump?
VATS should kill the injectors, but I figured I'd ask.
It could be a bad I/O, but I doubt it.
It could be an incorrect flash, but usually that comes with more problems than just the fuel pump.
I suspect a wiring issue with the PCM transplant.
Were you able to have it running on this PCM prior to the flash?
It could be a bad I/O, but I doubt it.
It could be an incorrect flash, but usually that comes with more problems than just the fuel pump.
I suspect a wiring issue with the PCM transplant.
Were you able to have it running on this PCM prior to the flash?
Thread Starter
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Its defiantly think its a 98 pcm and wiring because I wired everything else for a 98 and the tuner also said the computer was a 98 and the wiring harness has the three wire temp gauge and 2 wire oil pressure sender. Which is only 98 I believe? Also every wiring schematic I have referenced for the 98 seems to match.
Thread Starter
Teching In
Joined: Jan 2010
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VATS should kill the injectors, but I figured I'd ask.
It could be a bad I/O, but I doubt it.
It could be an incorrect flash, but usually that comes with more problems than just the fuel pump.
I suspect a wiring issue with the PCM transplant.
Were you able to have it running on this PCM prior to the flash?
It could be a bad I/O, but I doubt it.
It could be an incorrect flash, but usually that comes with more problems than just the fuel pump.
I suspect a wiring issue with the PCM transplant.
Were you able to have it running on this PCM prior to the flash?
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Verdad Gallardo PCM controls the ground side for everything except the fuel pump. I guess they don't want the pump running if the wire would get rubbed through and ground out so they trigger it power side.
