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www.ColoradoClassicBroncos.com :: View topic - Help needed on TBI conversion
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Help needed on TBI conversion
https://coloradoclassicbroncos.com/viewtopic.php?f=4&t=2827
Page 1 of 1

Author:  landshark [ Mon Oct 31, 2011 9:33 pm ]
Post subject:  Help needed on TBI conversion

Hey guys, i know iam the new guy on here and this is a Bronco forum, however I really need to get this FJ40 out of my garage so i can get the bronco into it. I helped or rather dove into a TBI conversion on the installed chevy 350 however i'm running into a bit of problem trying to get the thing fired up.

As I said he has a chevy 350 installed in it, i pieced together all the parts, computer, wire harness etc etc.. I have everything installed and wired up however I'm stumbling a bit on getting it to fire. I have spark, the timing is dead on and I hear the fuel pump kick on and see the fuel pressure hit 13psi when i crank it however still no start up. I think the injectors are not kicking on.. or i have something mis-wired however not too sure. I have been working on this by myself for the most part and not sure where to go from here. (complete newbie on this)

As i said I know iam the new guy on here however I thought i would reach out and see if anyone has some experience getting on of these fired up and would be willing to lend a hand. I would be more than willing to float some $, food, beer or all the above to help get this rust bucket out of my garage.

Thanks!

Author:  Jesus_man [ Tue Nov 01, 2011 1:31 pm ]
Post subject:  Re: Help needed on TBI conversion

You may get help here (I have been surprised before), but you may seek help over on , Coloradok5.com, Colorado4x4.org, or maybe an FJ-40 site as I am sure the issues are much more common there than here.

J.D.

Author:  landshark [ Wed Nov 02, 2011 9:22 pm ]
Post subject:  Re: Help needed on TBI conversion

its ALIVE.. took a few calls to people in the know.. but in the end i figured it out... now to get the front end together and its OUT OF HERE!

Author:  Booger [ Thu Nov 03, 2011 3:30 am ]
Post subject:  Re: Help needed on TBI conversion

So what was it? Something simple I bet.

Author:  landshark [ Thu Nov 03, 2011 1:19 pm ]
Post subject:  Re: Help needed on TBI conversion

I didn't supply 12v start/run power to the injectors. There are two service hookups on the wire harness I picked up (from a 92 camero) - well two of the wires going into the service connector were for the injectors and were not hooked up to anything.. hence no power. I overlooked it due to poor wiring schematics and honestly this was my first conversion.

Not any one wiring schematic helped me.. it was a conglomerate of 5 that eventually pointed the way. Then, a little trouble shooting and checking voltages ended up eliminating almost all problem areas and I was able to finally nail down the fact that.. hey.. no 12v, no fuel, no start.. and so i tied the injectors into the pink and black wire and it fired right up.

Glad I got it running.. set the timing last night and started putting the front end together. I think i can have it out of the garage tonight and get things cleaned before i work on redoing my powersteering/York/upper intake maintenance on the fullsize.. have a slight leak on the lower intake, new bracket for the York and I want to install a real Power steering resevior for my Hydro assist...

Anyway It was a good learning experience, even if it wasn't my truck ;)

I will be going EFI on the 76 bronco eventually - probably move the 302 from the fullsize (EFI, Mass air, roller) to the 76.. but we will see.. thats a ways down the road.

Author:  ZOSO [ Thu Nov 03, 2011 4:39 pm ]
Post subject:  Re: Help needed on TBI conversion

How hard was that tbi to do? Id like to look into something like that for my 79.

Author:  Gunnibronco [ Thu Nov 03, 2011 5:05 pm ]
Post subject:  Re: Help needed on TBI conversion

I'm hijacking for a second,

Zoso, have you ever seen this company:
http://www.pricemotorsport.com/
I can't link to the exact page, but they have an adapter plate to put 351W stuff on the 351M/400.
Click on "Intake Adapters" then "AP-34".

You should try it. Yeah.

Chad

Author:  ZOSO [ Fri Nov 04, 2011 6:01 am ]
Post subject:  Re: Help needed on TBI conversion

I've got a 460 in my bronco. And the only downfall with goin to stock 460 efi I would need to change the heads to the efi ones. It wouldnt be cheap with my valve train. Thats why Im just lookin into a tbi setup. I really like the fast ez-efi as it's bolt on and is self tuning.

Author:  Gunnibronco [ Fri Nov 04, 2011 7:27 am ]
Post subject:  Re: Help needed on TBI conversion

Sorry for the unnecessary hijack. I saw those adapters a few years ago when I wanted to put a 400 in my Bronco.

Chad

Author:  landshark [ Mon Nov 07, 2011 10:16 am ]
Post subject:  Re: Help needed on TBI conversion


Author:  landshark [ Tue Nov 08, 2011 10:48 am ]
Post subject:  Re: Help needed on TBI conversion

Figured I would post up the rust bucket i was working on..

fj40.jpg

runs great! drives like crap!

Author:  Jesus_man [ Tue Nov 08, 2011 10:58 am ]
Post subject:  Re: Help needed on TBI conversion

FJ-40's are still cool!

Author:  Dukietown [ Tue Nov 08, 2011 11:02 am ]
Post subject:  Re: Help needed on TBI conversion

Those old land cruisers are really cool though. Would love to rebuild one some day.

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