Neutral safety switch/no start - Ford Bronco Forum
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post #1 of 55 (permalink) Old 01-24-2012, 09:23 PM Thread Starter
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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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post #2 of 55 (permalink) Old 01-24-2012, 09:58 PM
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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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post #3 of 55 (permalink) Old 01-24-2012, 10:18 PM Thread Starter
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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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post #4 of 55 (permalink) Old 01-24-2012, 11:25 PM
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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:

.
Quote:
Originally Posted by ssommerfield View Post
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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post #5 of 55 (permalink) Old 01-24-2012, 11:35 PM
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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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post #6 of 55 (permalink) Old 01-25-2012, 06:18 PM Thread Starter
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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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post #7 of 55 (permalink) Old 01-25-2012, 06:29 PM
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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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post #8 of 55 (permalink) Old 01-25-2012, 11:22 PM
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Quote:
Originally Posted by Steve83 View Post
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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post #9 of 55 (permalink) Old 01-25-2012, 11:25 PM Thread Starter
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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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post #10 of 55 (permalink) Old 01-25-2012, 11:34 PM
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Originally Posted by j. r. Nice View Post
Why would a 5.8 with a C-6 be rare?
Because the E4OD came out in '89.
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Originally Posted by ssommerfield View Post
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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post #11 of 55 (permalink) Old 01-26-2012, 09:34 AM
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Originally Posted by Steve83 View Post
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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post #12 of 55 (permalink) Old 01-26-2012, 02:47 PM
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Originally Posted by Steve83 View Post
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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post #13 of 55 (permalink) Old 01-26-2012, 03:56 PM
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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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post #14 of 55 (permalink) Old 01-26-2012, 06:26 PM
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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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post #15 of 55 (permalink) Old 01-26-2012, 11:53 PM
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OK, so NOT rare. But I'd still like to see his door sticker, or trans.
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post #16 of 55 (permalink) Old 01-27-2012, 10:25 AM
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can you adjust the cable shift linkage on a 1995 Bronco?
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post #17 of 55 (permalink) Old 01-27-2012, 12:43 PM
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post #18 of 55 (permalink) Old 01-27-2012, 04:22 PM
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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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post #19 of 55 (permalink) Old 01-31-2012, 07:11 PM Thread Starter
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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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post #20 of 55 (permalink) Old 02-01-2012, 08:11 AM
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Quote:
Originally Posted by ssommerfield View Post
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!
yo ssommerfield,

Installation in an 89 C6 (pics are gone); "...I have another thread about this, but it is unorganized and way bigger. The Nuetral safety switch goes on the outside of your tranny and detects which gear you are in and only lets you start the car if you are in nuetral or park. It it wired between the starter relay and the starter switch. It is located on the drivers side of the transmission where the shift lever and the downshift cable attach. I actually had to get a 90 NSS from the parts store so maybee I had a late production 89. I had to odrer mine from advance auto parts because Napa did not have it. I got a Borg Warner Design part, I am not impressed with the quality but if it fails I can easily repalace it. Here is the old one and new one side by side. You can see how the epoxy sealer has seperated all the way around the edge in the old one. Removing it should take no more than 5 min. There is a little bolt at each end and one nut in the middle the nut is the hardest thing. You have to immobilize the lever attached to it in order to get the nut off. When put it back in you are supposed to adjust it but I just put it in the middle and it works for me..."
Source: by Mad Dog Tannen at FSB
http://www.fullsizebronco.com/forum/23-technical-write-ups/173975-nuetral-safety-switch-info.html

&

Installation in an 89 C6 (pics are gone); "...It probably took me a total of 5 minutes to change this part. As you can see in the pic it has two bolts holding it on and one nut holding on the downshift lever. the hardest part is the downshift lever has to be immobilized while you loosen the nut. You can do this with a screwdriver like me or the book says to use a guage rod or something. You can get to it on the drivers side of the tranny. Here is a pic of it installed..."
Source: by Mad Dog Tannen at FSB
http://www.fullsizebronco.com/forum/show...=173118&page=2

also, not for your year, but why some are 4 pin and other have 6 pins
Neutral Safety Switch (also referred to as Park/Neutral Position (PNP) & Back-Up Switch) Info & Part Numbers for an 88 C6; "...Ford used the electric Push Button Wiring in Broncos for about mid-year 87 for both the push button and manually shifted transfer cases. So the Push Button NSS is used in the manually shifted cases, but only 4 pins out of the 6 are used; the other 2 pins are used in the Push Button transfer case for Electric Shift Control Module and not used in the manually shifted cases; 6 PINS, STANDARD MOTOR PRODUCTS Part #NS92..."
Source: by miesk5 at Ford Bronco Zone Forums


===========

Switch - Neutral Safety / Backup Lamp

NS-92 w/ 3 Speed Trans.; w/ Electronic Shift transfer case
Connector Gender Female
Maximum Vehicle Quantity 1
Number of Electrical Connectors 1
Number of Terminals 6
Number of Wires 6
Terminal Gender Male
Terminal Type Pins

--
NS-29 w/ 3 Speed Trans.; w/o Electronic Shift transfer case 4 pin

NS-54 w/ 4 Speed A.T.; Incl. Backup Light Switch; 4 Pin

NS-93 NS-93 NS-93 w/ 3 Speed A.T. 6 Pin
===========

Neutral Safety Switch (also referred to as Back-Up Switch) Wiring Diagram (Partial) & Color Codes in an 89 5.8 C6; "...The lights in the back you are asking about are called Backup lights. A diagram of the circuit is attached. Do you have a volt meter? If you do, then turn the key to run and place the transmission in ® reverse. At the lamp socket check for 12 volts, (run a jumper lead all the way to the battery (-) rather than depending on the body metal for your ground). If you have 12V at the center contact in the light socket, you have ab ad ground. If you do not have 12 volts at the center contact of the light socket, go back to the Pink with black stripe wire at the transmission switch. If no 12 volts there check the other side of the switch (purple with orange stripe). I think you get the idea. When you get 12V the problem is between that point and the lamp socket. It could be either a corroded contact in a connector, a broken wire or the switch. I did not include the fuse because it also provides power for the turn signals..."
Source: by Ford via Seabronc (Rosie, Fred W) at Ford Bronco Zone Forums
http://broncozone.com/topic/21322-mo...5&#entry111775

96 XL 5.0 E4OD, Man Xfer/Hubs
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THANKS to ALL WHO SERVE!

my broncolinks.com was "disturbed"; but some sections are archived @ [url]http://web.archive.org/web/20121009110424/http://www.broncolinks.com/index.php
select a LINK, Right Click & Hit Properties; copy the second HTTP address; paste in a new browser window or Tab to see original page
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