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Old 01-24-2012, 09:23 PM   #1
ssommerfield
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Neutral safety switch/no start

Ok, been reading threads all night while working on the bko. Have done all the checks, good starter relay, good ignition switch, etc. To make my question quick, does anybody know if a bad neutral safety switch will prevent power from going to the starter solenoid. Ignition switch is functioning, but i am getting no juice at the wire. I am hoping I don't have a break in the wire itself. Truck will start by jumping with a screwdriver, will not start in neutral or park with key. Tried to keep it brief, thanks guys. P.S. (5.8/c6)
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Old 01-24-2012, 09:58 PM   #2
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That is the job of the neutral safety sw. If its not in N or P it will not power starter. Check the plug(may be loose), check the shifter rod going into the switch. Try adjusting the switch(2 screws mount it)
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Old 01-24-2012, 10:18 PM   #3
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Ok will do, read a good thread on adjustment, will try in the morning. Ive been doing what we refer to in the aviation world as shotgun maintenance, throwing new parts at the problem looking for a hit. Should have done more diagnostic before buying solenoid and switch. Thanks for the two cents.
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Old 01-24-2012, 11:25 PM   #4
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You're SURE it's a C6? That would be rare. Read this caption:



Once you know for sure, edit your profile to include it. You can delete "19__" and "Bronco" since those are assumed here. Use that space for things we DON'T know, like miles, mods, damage, repairs, tire size, gears...

Then read these captions:

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Ive been doing what we refer to in the aviation world as shotgun maintenance, throwing new parts at the problem looking for a hit. Should have done more diagnostic before buying solenoid and switch.
We call that "wasting time & money". I hope you kept all the old parts - they're probably better quality than the replacements.
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Old 01-24-2012, 11:35 PM   #5
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A simple 12v test light works well. It will require a second person working the ignition. I think they are Red w blue striped wire one feeds into the trans and if not in the proper position (park or neutral) should prevent current from getting to the starter solenoid.
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Old 01-25-2012, 06:18 PM   #6
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Ha! yes wasting time and money is one way to put it. Crawled under the truck with a multi-meter and got 12 VDC going in and none coming out. Going to look at the adjustment procedure tonight and see if that gets me anywhere. If not does anyone have a source for a replacement NSS. No parts house in town can get them. I have found them on E-bay but the manufactures are foreign to me.
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Old 01-25-2012, 06:29 PM   #7
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Unplug NSS and try it. Mine fell apart, ordered a new one with the wrong connector, drove it for a week waiting for the right one to come in. Mine starts in any shifter position without NSS plugged up.
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Old 01-25-2012, 11:22 PM   #8
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You're SURE it's a C6? That would be rare.
Why would a 5.8 with a C-6 be rare? ....an AOD maybe....
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Old 01-25-2012, 11:25 PM   #9
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Yes it is no doubt a C6. I dont believe AOD was even an option for a 5.8. Tried the adjustment as outlined with no results. Bypassed the switch and back in business. New switch ordered and on the way. Have to have the rig for the beach this weekend. Thanks for the input guys.
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Old 01-25-2012, 11:34 PM   #10
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Why would a 5.8 with a C-6 be rare?
Because the E4OD came out in '89.
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Yes it is no doubt a C6.
Did you read that caption & look at the code? Is there an "O/D OFF" button on the dash beside the steering wheel?
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Old 01-26-2012, 09:34 AM   #11
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Because the E4OD came out in '89.Did you read that caption & look at the code? Is there an "O/D OFF" button on the dash beside the steering wheel?
Most every '89 Bronco w/ 5.8 that I have seen and read on here has a C-6.
Might have been offered in the '90....but I don't have a sales brochure. I was thinking it wasnt until '92. E4OD was for sure offered in the larger trucks in '90.
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Old 01-26-2012, 10:42 AM   #12
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It for sure was - read the bottom of this caption:

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Old 01-26-2012, 02:47 PM   #13
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It for sure was - read the bottom of this caption:

You mean for sure the E4OD was offered in the 90 model year Bronco?
OK, but it wasnt offered in the FSB in '89. Bronco line seems like it always lagged behind the other lines in new stuff.
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Old 01-26-2012, 03:56 PM   #14
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AFAIK, it was, but I can't find anything that shows it definitively. This site (which is NOT authoritative or error-free) suggests that it was available both years:
89 http://www.fordpartsgiant.com/catalo...-18886685.html
90 http://www.fordpartsgiant.com/catalo...6-1900103.html
It correctly does NOT list it for '88, which suggests some level of accuracy:
88 http://www.fordpartsgiant.com/catalo...-18886685.html
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Old 01-26-2012, 06:26 PM   #15
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I looked it up in the Ford 1989 Truck Light Duty Specification book FPS 12137-89 BOOK 2. January 1989.
The E4OD wasn't listed for the Bronco, only the 3 speed auto is shown for 5.8 vehicles.
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Old 01-26-2012, 11:53 PM   #16
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OK, so NOT rare. But I'd still like to see his door sticker, or trans.
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Old 01-27-2012, 10:25 AM   #17
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can you adjust the cable shift linkage on a 1995 Bronco?
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Old 01-27-2012, 12:43 PM   #18
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Old 01-27-2012, 04:22 PM   #19
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yo
Some 90 MY E4OD Confirmation;
Window Sticker in a 90 EB w/E4OD

Source: by SeattleFSB (Seattle FSB) at SuperMotors.net

1990 Standard Equipment & Option List & w/Option Codes & Prices; Interior & Exterior Color Codes; Engine, Tramsmission & Axle Types & Codes
Source: by SeattleFSB (Seattle FSB) at http://www.supermotors.net/registry/20487/75630

page 2
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Old 01-31-2012, 07:11 PM   #20
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Need a little more help here. Have my problem figured out, bad NSS. Now, I have the old one bypassed so I can still drive the rig, but am having problems finding a replacement. No shop or dealer in town can get one. Found them readily available on e-bay, ordered one up and the connector was wrong. The original has 6 wires and a larger plug, new one has small plug and 4 wires. All my search for 89 with 351/C6 has returned the same four wire plug connector. Am I missing something? Is it possible it has electronic shift? I didn't think it was an option for a 89 C6. Thanks for the help!
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