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Ford Bronco Problems

231 messages,  Last post on Nov 21, 2009 at 2:24 AM

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What is this discussion about? Ford Bronco


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#76 of 231
Re: 93 Bronco gas problem [gator07] by miesk5
Nov 21, 2007 (7:56 am)
Reply

Replying to: gator07 (Nov 20, 2007 12:40 pm)

Gator,
OK, do that self-test anyway; some codes may be stored w/out lighting the CEL
 
ABS;
& do a self-test too here; The 4WABS connectors is red, & is under the hood right beside the engine test connector
4WABS System Component Locations, DTCs & Self Test & Connector Diagram; 93-96
Source: by Steve83
http://www.supermotors.net/vehicles/registry/media/255501_1
 
ABS Self test connector location; ABS (RABS II) Self Test , Diagnostic Connector Location, (title in article is wrong in article)
Source: by autorepair.about.com
http://autorepair.about.com/library/faqs/bl180d.htm
 
GL!
#77 of 231
87 Bronco fuel pump problem by tjewertz
Nov 25, 2007 (2:42 pm)
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i have a 87 full size Ford Bronco w/ the EFI 5.0 & O/D A/T. a few months ago i replaced the entire fuel system, tank, both pumps, filter, lines, & ERG system (rust problem). a few weeks ago the acuator rod in the column broke & since i couldn't find a new column (can't buy an acuator rod seperate) i installed an aftermarket ignition switch in dash. 2 weeks after i did the switch, the Bronco stalled at a light, i was idling & now the fuel pumps won't run. I've changed the ECM computer, the fuel pump relay (which if i jump the hot terminal to the out going, the pumps run) and all related fuses with no luck. Does anyone have any suggestions as to what may be keeping the fuel pumps from running?
#78 of 231
Re: 87 Bronco fuel pump problem [tjewertz] by joeflew1
Nov 26, 2007 (12:38 am)
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Replying to: tjewertz (Nov 25, 2007 2:42 pm)

hey, i have a 1994 thunderbird with the same problem the fuel pump is not running. changed the pump and checked the fuses. dont know where the pump relay is under the hood so i cant change that. anyone know where it is.
#79 of 231
Re: 87 Bronco fuel pump problem [tjewertz] by miesk5
Nov 29, 2007 (1:21 pm)
Reply

Replying to: tjewertz (Nov 25, 2007 2:42 pm)

yo TJ!
Did you see any corrosion insde the FP Relay's socket?
Fuel Pump Relay Socket Corrosion Info; spray it down with contact cleaner; They absolutely HATE moisture; also ck the EFI Power Relay (should be next to the FP Relay) for operation & corrosion.
 
Next is the Inertia Fuel Cut-Off Switch (did you have a front end fender bender recently?
 
see this by Bronco Rob & Steve 83; http://fullsizebronco.com/forum/showthread.php?t=38216
 
Fuel Pump Relay Operational Sequence;
An inertia switch is used as a safety device in the fuel system. The inertia switch is located in the cab, generally under the dashboard on the right side. It is designed to open the fuel pump power circuit in the event of a collision. The switch is reset by pushing each of 2 buttons on the switch simultaneously (some models use switches with only one reset button). The inertia switch should not be reset until the fuel system has been inspected for damage or leaks.
 
When the ignition switch is ON, it turns the EEC power relay ON. The EEC power relay provides power to the powertrain control module (PCM) and the control side of the fuel pump relay. Power for the fuel pump(s) is supplied through a fuse link or high current fuse attached to the starter solenoid (battery side). From the fuse link or high current fuse, current flows through the fuel pump relay and inertia switch to the fuel pump(s). The fuel pump relay is controlled by the PCM.
 
When the ignition switch is turned ON, the fuel pump(s) will operate. If the ignition switch is not turned to the START position the PCM will shut the fuel pump(s) OFF after 1 second. The PCM will operate the fuel pump(s) operate the fuel pump(s) when the ignition switch is turn to START position to provide fuel while cranking.
 
After the engine starts, the PCM will continue to operate the fuel pump(s) unless the engine stops, drops below 120 rpm or the inertia switch is tripped.
 
GL!
 
The pickup in the distributor can throw a code when it is intermittent or not working..
One of many reasons you should check your codes
 
Have you done a code check? scan above for a DIY check that I have posted a few times here.
#80 of 231
Re: 87 Bronco fuel pump problem [joeflew1] by miesk5
Nov 30, 2007 (6:16 am)
Reply

Replying to: joeflew1 (Nov 26, 2007 12:38 am)

yo Joe!
 
The FP relay is in da IRCM (formerly called da CCRM) and it is Mounted forward of the airbox The CCRM is not usually serviceable. But if you want to take a shot at it see Joe's info in Link below
Troubleshoot & Repair Your Malfunctioning Integrated Relay Control Module (IRCM) - by - J o e F r a z i e r NATO Member "Joe Cool
http://www.turbotbird.com/techinfo/New_IRCM/IRCM.html
 
CCRM = Constant Control Relay Module , IRCM = Integrated Relay Control Module;. This relay contols the fan, fuel pump and A/C clutch if i'm not mistaken.
the fuel pump relay is tied into the IRCM on 94-95s; Since 1986, Ford has used, on several models, an Integrated Relay Control Module (IRCM) to operate the fuel pump, engine cooling fan and compressor clutch. During the early 1990’s, the
name was changed to Constant Control Relay Module (CCRM). The module has a 24-pin connector .
more Tech Info:
http://www.dualcurve.com/5910-INST.pdf
 
GL!!!!!!!!!!!
#81 of 231
ABS realy on 93' Bronco by bavington
Dec 02, 2007 (1:03 pm)
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Wherr is the realy for the ABS.It is not marked and there is lots of realys under the hood.thanks
#82 of 231
Re: ABS realy on 93' Bronco [bavington] by miesk5
Dec 03, 2007 (3:39 am)
Reply

Replying to: bavington (Dec 02, 2007 1:03 pm)

Bavington,
Relay? Do you mean the Test Connector?
4WABS System Component Locations, DTCs & Self Test & Connector Diagram; 93-96; The 4WABS is located at the left-hand side (driver's side) of the engine compartment and marked ANTI-LOCK TEST - in my 96 it is near the hood hinge
Source: by Steve83 & miesk5
 
if Relay in;
Power Distribution Box Diagram in a 93
Source: by Troll Banned
http://www.supermotors.net/vehicles/registry/media/290854
#83 of 231
95 bronco 5.0 302 by scooter692002
Dec 03, 2007 (2:59 pm)
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My 95 Bronco has a 5.0 302 engine in it. The bearings went bad so i bought a new long block. The new motor has hydralic lifters and cam my old motor has roller lifters and cam. Does that make any difference. The problem i am having with the new motor is 5 & 7 there is no compretion ? please and thank you for your help
#84 of 231
Re: ABS realy on 93' Bronco [miesk5] by bavington
Dec 03, 2007 (3:52 pm)
Reply

Replying to: miesk5 (Dec 03, 2007 3:39 am)

Thanks-The re;lay is what I was after.For some reason my owners manual shows the realy, but not what it is for.
#85 of 231
abs lite still on by bavington
Dec 03, 2007 (5:41 pm)
Reply
I decided to replace the abs sensor($20) on the differential(guy at ford dealer said they go bad quite often) and it did not help.I had my doubts, but gave it a try.The code I got was a 17(possible relay, fuse, intermittent valve failures, opens or shorts to ground,high resistance valves etc) when I did the test prior.I tried swapping the horn relay with the ABS relay in the Distribution box which had the same numbers on them and that did not make the lite go out.I only started the vehicle in the garage which I felt should be enough to make the lite go out if the sensor or relay was the culprit.Are there any resistance readings on the wires comeing from the rear sensor that I should look for.One reads 5k and the other has very high res.Would like to fix the problem if possible.thanks

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