getting ready to do maf swap

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Mar 18, 2011 | 09:55 AM

#16

rla2005

Fleet Owner

Joined: Oct 2005

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From: Kentucky

If you are using a 1994 and later truck MAF computer there is no input for the BAP. The BAP is the same as a MAP sensor. Instead of plugging the port into the manifold (Manifold Absolute Pressure) it is left open to sense barometric pressure.

Mar 18, 2011 | 10:39 AM

#17

Conanski

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From: Ottawa, Ontario

There is no MAP sensor on MAF truck systems so you can simply disconnect and ignore it. Same goes for the knock sensor, the 5.8 doesn't use one and it's absence won't upset a 5.0 EEC anyway so it too can just be ignored.

Mar 18, 2011 | 11:24 AM

#18

darkhorse2011

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no knock or bap ...this keeps gettin better.... less crap to kick a code and that knock sensor is a biotch
to get to

what did you notice after makeing this upgrade to your trucks ,mpg increase smoother idle,more power?

Aug 10, 2020 | 03:40 AM

#19

crankyray

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Joined: Aug 2013

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From: Sweet Home Alabama

I swapped a 95' motor for my 93' before I got my education on the MAF change Ford made. I am trying to start my donor motor with no luck. I kept my 93 harness and computer (Still looking for the rest of the MAF donor parts). You mentioned something here about the computer knowing which cylinder was #1. Is there a sync process? The firing order for #1 didn't appear to move as both were in the same location on the cap. I'm really stuck here.

Aug 10, 2020 | 01:13 PM

#20

raystankewitz

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Joined: May 2010

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From: Central Indiana

Start your own thread

Quote:

Originally Posted by crankyray

Might be better to start your own thread rather than to jump into a nine year old thread that's been long forgotten.

Aug 10, 2020 | 01:49 PM

#21

Glaser67

More Turbo

Joined: Feb 2015

Posts: 508

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From: NE Ohio

Quote:

Originally Posted by Conanski

What transmission does each of these trucks have? The 5.0 MAF EEC will run a 5.8 no problem but it's very likely these trucks have computer controlled transmissions and that will present issues(problems) if both trucks dont have the exact same trasnmission.

For these trucks it's easier to make an overlay harness from the donor than to swap out the whole thing because the engine harness is integrated with the chassis harness so it won't simply disconnect you have to cut a lot of wires. It's also easier because you don't need the whole harness you just need the portions for the injectors and MAF meter.. about 13 wires total. I suggest you strip all the tape and loom off the donor harness and seperate these wires, and then wrap them up seperately in preparation to add them to your truck. Note: these wires have to be complete from the component connectors all the way back to the pins that go into the EEC connector because these pins do not exist in the SD EEC connector. But fear not because the EEC connector comes apart to facilitate adding or moving pins, so its also an option to remove the SD injector wiring(3 wires) while you're in there since you have to pull these pins out of the EEC connector anyway. Follow the link to see how the connector comes apart... http://ww.fordfuelinjection.com/index.php?p=74

I did what Konanski describes above with the overlay. It takes some time, but I think it was better to leave as much of the existing, complete, WORKING wire harness intact. It's also a great opportunity to completely re-loom and wrap your old harness. I didn't have the means to do so when converted, but also a good opportunity to check continuity from sensor clip down to the main ECM plug while your at it.

Aug 10, 2020 | 03:50 PM

#22

crankyray

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Joined: Aug 2013

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From: Sweet Home Alabama

Thanks for your input, I'm told that since I have two O2 sensors this is not a 94' or 95' so now my search for a donor 96' EEC/ inlet tube with MAF/ partial harness. I can't hardly believe how much fun I'm having.

Aug 10, 2020 | 04:09 PM

#23

Conanski

FTE Legend

Joined: Jun 2006

Posts: 31,930

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From: Ottawa, Ontario

Crankray, you have some simple problem you are overlooking don't go jumping to conclusions, O2 sensors are NOT causing your no start issue.. no sensor will do that, you problem is more basic you just have to find it.
Don't fret... take a break and have a beer.. or six... if that's your thing.. LOL, and come back for another look.