PSI Conversion

[cpd004]

Do you 'feel' the other relay click when you turn the key?

[Swain]

Originally Posted by dhutton

What about all your grounds? How is everything grounded?

Don

I have grounds all over the place. I will see what PSI can come up with later this week. Hopefully it is my wiring or something easy. They will make sure the ECU is programmed to my specs.

[dhutton]

Originally Posted by Swain

I have grounds all over the place. I will see what PSI can come up with later this week. Hopefully it is my wiring or something easy. They will make sure the ECU is programmed to my specs.

Heavy grounds from the battery to the block and body? Ground strap from the block to the body? ECM needs a nice clean ground.

Don

[Swain]

Originally Posted by dhutton

Heavy grounds from the battery to the block and body? Ground strap from the block to the body? ECM needs a nice clean ground.

Don

I have a heavy wire straight to the block. then Ground to the Subframe. I have sold mounts on the subframe.

Only thing it could be maybe I need a better clean ground to the body.

The ECU is grounded to the body.

[TomM]

Originally Posted by Swain

I have a scanner it will no link to ECU.

Tried everything lol.

This might be a clue......

You need to constant hot to the PCM, fused from the battery. The you need your keyed hot(which you have already verified). Once you plug in your scanner and turn the key, you should be able to connect to your PCM. If not, either the OBD connector is not wired correctly, or you don't have computer power, i.e., computer not booting up.

Your OBD connector should have a hot wire from the keyed hot and then a ground. The other wire goes to the PCM. You can check the pin with a volt meter once you turn the key on and see if there is power at the OBD connector.

That is what I would check first.

T,

[cpd004]

Originally Posted by TomM

This might be a clue......

You need to constant hot to the PCM, fused from the battery. The you need your keyed hot(which you have already verified). Once you plug in your scanner and turn the key, you should be able to connect to your PCM. If not, either the OBD connector is not wired correctly, or you don't have computer power, i.e., computer not booting up.

Your OBD connector should have a hot wire from the keyed hot and then a ground. The other wire goes to the PCM. You can check the pin with a volt meter once you turn the key on and see if there is power at the OBD connector.

That is what I would check first.

T,

That is why I asked if the other relay 'clicks'. It is possible the feed to one of the terminals from the back has come loose (possibly at 85). Also possible but rare is a bad relay. This connection is made by the end user with a provided female terminal.

See pages 13 & 14 here for some specific info:

http://www.psiconversion.com/tech_ar...structions.pdf

[dhutton]

Originally Posted by Swain

I have a heavy wire straight to the block. then Ground to the Subframe. I have sold mounts on the subframe.

Only thing it could be maybe I need a better clean ground to the body.

The ECU is grounded to the body.

There is normally a good thick braided ground from the block to the body. The ECM is normally grounded to the block in the factory harness if I remember right.

Don

[Swain]

Thanks for all the feedback everyone. I will let everyone know what they say when they get to it. I will go over all my grounds tonight. Maybe add a few more.

I will keep everyone posted.

[dhutton]

Originally Posted by Swain

Thanks for all the feedback everyone. I will let everyone know what they say when they get to it. I will go over all my grounds tonight. Maybe add a few more.

I will keep everyone posted.

See steps 5.7 through 5.9 on page 7 for detailed grounding instructions for your harness:

http://www.psiconversion.com/tech_ar...structions.pdf


Don

[youthpastor]

I had 2 PSI computers that had the VAT's removed but...there was a security feature that was not turned off. Would crank but no fire

Does it fire with a little air intake cleaner sprayed in the throttle body?

Injector pulse?

That is my guess.