LQ9 Swap!!!!! Help

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Nov 25, 2008 | 04:39 PM

Rafko

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LQ9 Swap!!!!! Help

I just swapped a 2003 6.0 into my 88 s10 blazer. I took it to a reputable shop to remove the Vats. He said he removed the Vats. When i try to crank it now it will run a little longer but after about 5 secounds it will shut off an give me a code for fuel pump relay circuit code: P0230B. I checked the wire coming out of my computer feeding the fuel pump. It has 12 volts but dies off with engine running..?...any idea what this could be..?..oh and the intake has been swapped to a cable driven throttle body and the harness and computer is from a 2000 sierra with a 5.3. Any help would be appreciated.

Nov 25, 2008 | 07:00 PM

poconojoe

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From: Northeast PA

Jump the fuel pump circiut to keep the pump running and see if the motor runs then.

Nov 25, 2008 | 08:07 PM

98blackSS

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How is your FP relay wired up?

Nov 26, 2008 | 07:50 AM

Rafko

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first question is how do i jump power...?..not to sound like a dumbass i don't wanna **** anything up....It is wired up like this....the 87 pole on the relay which is a blue wire is going to the pump i just tapped into the stock power wire. 85 is white and is going to ground. 86 is keyed power. 30 is a green wire and is going to the pcm #9 on the red connector...do i need anymore wires..?...maybe the voltage is dropping...?...could that be causing this problem?

Nov 26, 2008 | 08:12 AM

95 bright teal

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Sound like vats is still working

Nov 26, 2008 | 03:36 PM

jfg455

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From: nh

Quote:

Originally Posted by Rafko

no no no. 30 is power in from a 20A fuse, 87 is power out to pump, 86 goes to ground an 85 goes to #9 on the pcm. You are sucking all of the power throught the PCM trying to power the pump and you are getting a massive voltage drop (and will probably smoke the PCM eventually). I'll try and post the schematic from GM. G