Ford Bronco Hard start after sitting ? Also exhaust question - Page 5 - Ford Bronco Forum
Reply
 
LinkBack Thread Tools Display Modes
post #81 of 89 (permalink) Old 02-28-2017, 06:03 PM
Registered User
 
Join Date: Nov 2009
Location: Redford, MI
Posts: 3,230
Bronco Info: '96 Black 302 XLT - '94 Green 351 E. B. both are E4OD, 3.55 axles, 31 10.50x15
iTrader: (3)
No problem, one more thing, in Steve83's write up, he takes the rear carpet out, when I did mine, I just took the black plastic threshold off, and took the carpet and folded it up toward the front. That way you don't have to take out all that seat hardware.

Yes the FDM has all the valves, etc. The pump is removable from the FDM if you unsnap the FDM apart (like my FDM was trying to do by itself). The actual pump is about 4"-5" long, about an 1 1/4" diameter, and sits in the bottom of the FDM. Make sure that the replacement comes with a new strainer (not shown in my pictures).

Here's the stuff inside the FDM:



http://www.supermotors.net/registry/media/892443

"The simplest solution is usually the best solution" - Occam's Razor

"The significant problems we face cannot be solved at the same level of thinking we were at when we created them." - Albert Einstein
Mikey350 is online now  
Sponsored Links
Advertisement
 
post #82 of 89 (permalink) Old 03-01-2017, 12:18 AM Thread Starter
Registered User
 
godzilla's Avatar
 
Join Date: Nov 2011
Posts: 159
Bronco Info: 1994 bronco xlt 351w all stock 31in tires
iTrader: (0)
Alright thanks dude,

Is this a good brand. It looks like it would do the job. does this unit have the valves and the pump included.

Delphi Automotive FG0198 - Fuel Pump Module | O'Reilly Auto Parts


Sorry I just want to get some opinions. Also should I replace the assembly or just the pump while i'm in there?

If I do go with motorcraft I see the whole assembly. Its pricey BUT this truck is my DD and I do really care about it and want the most reliable pump and valves.
godzilla is offline  
post #83 of 89 (permalink) Old 03-01-2017, 01:35 AM
Registered User
 
Join Date: Nov 2009
Location: Redford, MI
Posts: 3,230
Bronco Info: '96 Black 302 XLT - '94 Green 351 E. B. both are E4OD, 3.55 axles, 31 10.50x15
iTrader: (3)
I don't remember what brand I bought, only that I bought it at Advance Auto. That unit looks like the FDM I bought. Remember to get a new locking ring.

My '96 ran the original pump for about 110K miles (18 years). The one I replaced in my '94 (above pictures) had a date code of 2002-7-10, so whatever brand it was (I saw no markings on it), it lasted about 12 years (changed it in June 2014). If you cut the access hole you could change it in an hour, if you drop the tank, it would probably take longer, especially if you had a full tank of fuel. (20 gallons of gas weighs about 124 lbs, plus the weight of the tank itself) (gas is 6.183 lbs/gallon)

So, pay your money and take your chances.

"The simplest solution is usually the best solution" - Occam's Razor

"The significant problems we face cannot be solved at the same level of thinking we were at when we created them." - Albert Einstein
Mikey350 is online now  
 
post #84 of 89 (permalink) Old 03-01-2017, 05:37 PM Thread Starter
Registered User
 
godzilla's Avatar
 
Join Date: Nov 2011
Posts: 159
Bronco Info: 1994 bronco xlt 351w all stock 31in tires
iTrader: (0)
Could I use non insulated crimps while connecting the pump to the harness then cover the crimps in heat shrink tubing.

Will the gas disintegrate the heat shrink tubing.
godzilla is offline  
post #85 of 89 (permalink) Old 03-01-2017, 05:43 PM
Registered User
 
Join Date: Nov 2009
Location: Redford, MI
Posts: 3,230
Bronco Info: '96 Black 302 XLT - '94 Green 351 E. B. both are E4OD, 3.55 axles, 31 10.50x15
iTrader: (3)
Your FDM might come with crimp connectors, I don't remember if mine came the connectors, or I used ones that I already had.
I would recommend insulated crimp connectors, as I don't know if heat shrink tubing is fuel (ethanol and gasoline) resistant.
Having a spark occur inside a half full gas tank is something that might be fun to watch from a distance, but not 10' behind me.

"The simplest solution is usually the best solution" - Occam's Razor

"The significant problems we face cannot be solved at the same level of thinking we were at when we created them." - Albert Einstein
Mikey350 is online now  
post #86 of 89 (permalink) Old 03-02-2017, 11:41 PM Thread Starter
Registered User
 
godzilla's Avatar
 
Join Date: Nov 2011
Posts: 159
Bronco Info: 1994 bronco xlt 351w all stock 31in tires
iTrader: (0)
Thanks man, Just bought a carter fuel pump and lock ring. I also found a motorcraft sender (Should replace the 22 year old one while i'm in there). Motorcraft fuel filter and gas cap.

I seems like I could just use female spade connectors and connect it to the male connectors on top of the assembly. So hopefully the wire can reach all the way up there. But if not the carter one comes with some butt connectors so I got a plan B.

EDIT: It's not just the pump but the whole FDM. JUst incase any future readers were confused.
godzilla is offline  
post #87 of 89 (permalink) Old 03-20-2017, 11:20 AM Thread Starter
Registered User
 
godzilla's Avatar
 
Join Date: Nov 2011
Posts: 159
Bronco Info: 1994 bronco xlt 351w all stock 31in tires
iTrader: (0)
Has me and the shop stumped

So after replacing the FDM and the sender and fuel filter. The problem still exists. The new pump primes faster but it still bleeds off pressure. The shop checked the FPR and it checked out good. It still drops pressure after you shut the key off. They told me the injectors should be fine since the new plugs had no indication of fuel fouling on it. My question is what else could it be. When the truck is running its like its brand new. Its just the hard start. If I prime it three times the long crank time disappears.
godzilla is offline  
post #88 of 89 (permalink) Old 03-20-2017, 02:32 PM
Registered User
 
Join Date: Mar 2016
Location: Texas
Posts: 466
Bronco Info: 1989 Bronco 5.0 AOD w/ 3G alt, more to come
iTrader: (0)
Assuming there are no external leaks, there are only three things that cause fuel rail pressure to drop like that:

- Bad FPR
- Bad anti-drainback valve in high pressure pump
- Leaky injector or injectors

Keep in mind that especially in this day and age it is entirely possible to get a part that is bad out of the box. Also, the assertion that your injectors should be fine because the plugs aren't sooting up is questionable at best. It doesn't take much of a leak at all to depressurize the system and such a leak could effectively disappear when the engine is running or warm.
Spktyr is offline  
post #89 of 89 (permalink) Old 03-20-2017, 11:35 PM
Registered User
 
Join Date: Nov 2009
Location: Redford, MI
Posts: 3,230
Bronco Info: '96 Black 302 XLT - '94 Green 351 E. B. both are E4OD, 3.55 axles, 31 10.50x15
iTrader: (3)
Here's the whole fuel system, it's not that complicated, you have something broke. (Click the link below the picture to see it full size)


http://www.supermotors.net/registry/media/892363



http://www.supermotors.net/registry/media/892443

Read what the manual says about the fuel check valve.



http://www.supermotors.net/registry/media/892444

"The simplest solution is usually the best solution" - Occam's Razor

"The significant problems we face cannot be solved at the same level of thinking we were at when we created them." - Albert Einstein
Mikey350 is online now  
Reply

  Ford Bronco Forum > Bronco Discussions > Noobie Bronco Tech Questions. Flame free zone!

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Bronco Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself. DO NOT USE Gmail.com accounts. If you only have a Gmail.com email please contact the administrator here

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome