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Unread 01-10-2010, 02:54 PM   #1
Kryptae
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1985 CJ7 
 
Join Date: Jul 2009
Location: Texas
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Fuel Injector/Throttle Body Injector ID

Can anyone help me identify my Fuel Injector form these pics?



If so, does anyone have any info on how it would be wired into an '85 CJ7?

My fuel pump is not getting power. Coil, relay, and fuse are all good. Tracing the red wire leads into the computer which does not show a fuel injector connection (Chilton's). I'd like to contact the manufacturer for installation directions since I can't locate the PO's mechanic who installed the system. My friend (mechanic) does not think the ignition switch is bad but is looking for any info on how the system was wired in.

Any help is appreciated.


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Unread 01-10-2010, 03:05 PM   #2
CJunk
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1984 CJ7 
 
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Look on the computer. If it says Howell on it, you can call them for help. If not than do a search on here for "Junkyard TBI" because you have one or the other. (pretty much the same thing anyway)
Someone will probably chime in here to help with the problem, but a search will help you familiarize yourself with the system.
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Unread 01-10-2010, 06:33 PM   #3
jfwireless
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Here is a link that will show you how most 1227747 ECM's are wired into the system if it is a junkyard TBI install. Take a look at your computer and see if it is a 1227747 ECM.

Connection Drawings

Jim
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Unread 01-10-2010, 09:16 PM   #4
1986cj
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In your second picture , On the firewall right above the oil breather Green connector on the fire wall is your map sensor, to the right of that on the firewall just to the right of the air cleaner hold down bolt is your fuel pump relay, Not sure if Howell's harness has it but most GMs have a short wire out of the relay that goes nowhere about 4" long, this is a fuel pump test connector. Good place to start. If you know nothing about this system this is the best diagram I have ever found, easy to read and very complete by a guy named Dave Clifton, http://www.binderplanet.com/forums/showthread.php?t=54400
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Unread 01-11-2010, 08:04 AM   #5
Kryptae
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Thanks everyone for the info. I'll pass it along to my mechanic and see what he can do with it.
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Unread 01-11-2010, 12:59 PM   #6
gmakra
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That is a Rochester TBI sitting on a Howell adapter plate. You can down load instructions from the Howell site
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Unread 01-11-2010, 02:01 PM   #7
CSP
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Yep, the triangular piece on the linkage is a dead giveaway for a Howell modified throttle body.

The first place I'd look for a lack of power to the fuel pump would be the fuel pump relay fuse located on the firewall. It's in the second picture just to the right of the air filter hold-down stud.
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Unread 01-19-2010, 09:29 AM   #8
Kryptae
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Update

Thanks everyone for the input. It was a GM#1227747 ECM stuffed behind the glove box, over the ductwork.

Turns out the problem was two-fold. One issue was a loose "vampire" clip tapping off a hot line to the ECM fuel pump pin. The second was that not one but two fuel pump relays had gone/were bad. Took some time testing to figure out a "new" in the box unit was no good.

Got everything up and running again yesterday, so thanks again for the input.
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Unread 01-19-2010, 03:17 PM   #9
jfwireless
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Glad it is up and running, strange it had two fuel pump relays?

Jim
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Unread 01-19-2010, 03:51 PM   #10
CSP
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Not two relays in the system. The existing one was bad as was a new replacement.
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Unread 01-19-2010, 05:49 PM   #11
jfwireless
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Quote:
Originally Posted by CSP View Post
Not two relays in the system. The existing one was bad as was a new replacement.
wow, like you needed that. At least you figured it out

Jim
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