Go Back   Infamous Nissan - Hardbody / Frontier Forums > Tech Area > Engine and Drivetrain

Reply
 
Thread Tools Display Modes
Old 08-11-2017, 03:55 PM   #1
1madmouse
1madmouse
 
1madmouse's Avatar
 
Join Date: Oct 2015
Location: Redding,CA<USA
Posts: 25
Vehicle: Nissan D21 1991,standard cab 4cyl 5spd
Thanks: 2
Thanked 1 Time in 1 Post
Default fuel pump problems

Ok I have a 91 D21 2 wd, 4cyl, 5spd, with about 172,000 on it. I was driving to a job and the truck just started losing power like running out of gas. Would turn over, but not start, so got a ride and my towbar , towed it home. Checked relay, its ok, but don't hear fuel pump. So I checked the service manual and started doing the checks. relay ok, have spark, but no fuel. Checked plug at pump, book says 6 wires, mine has 5 and the one missing is the one I need for the test. Called shop they said $500 for pump and another $300 to do the work. I don't want to replace the pump if thats not the problem. Is there any good way to make sure the pump is really dead? I'll do the work, but just want to be sure.
1madmouse is offline   Reply With Quote
Old 08-11-2017, 04:10 PM   #2
91nissan94
 
91nissan94's Avatar
 
Join Date: Sep 2008
Location: Crescent City FL
Posts: 1,096
Vehicle: 91nissan hb
Thanks: 32
Thanked 75 Times in 69 Posts
Default

You can get the pump for under a $100. Only way I would now to check it is to jump the power and ground an see it it runs.
91nissan94 is offline   Reply With Quote
Old 08-11-2017, 07:35 PM   #3
1madmouse
1madmouse
 
1madmouse's Avatar
 
Join Date: Oct 2015
Location: Redding,CA<USA
Posts: 25
Vehicle: Nissan D21 1991,standard cab 4cyl 5spd
Thanks: 2
Thanked 1 Time in 1 Post
Default

I'm going to try that hoping to identify the wires at the plug and check for power at the pump. I have seen many people change the pump then find out that wasn't the problem. Can't hurt , thanks.
1madmouse is offline   Reply With Quote
Old 08-11-2017, 09:36 PM   #4
1madmouse
1madmouse
 
1madmouse's Avatar
 
Join Date: Oct 2015
Location: Redding,CA<USA
Posts: 25
Vehicle: Nissan D21 1991,standard cab 4cyl 5spd
Thanks: 2
Thanked 1 Time in 1 Post
Default

Ok went by the service manual and the fuel pump plug should have 6 spots or pins. Mine seems to be missing pin B , might be a difference between 90 and 91 as there is no manual for 91 so I'm using the 90. Also the pump is dead no continuity between A and C when there should be per EF & EC -317. Its too bad they don't show the plug as its mounted on the frame upside down to the book, just saying. So I 'm going to pull the tank and replace the pump. Anyone know why there are so many different pumps, from about $38.00 to $400.00. Quite the spread on prices. Want to use Rockauto, but not sure how long they take to ship. At least they go by VIN #s
1madmouse is offline   Reply With Quote
Old 08-11-2017, 11:26 PM   #5
91nissan94
 
91nissan94's Avatar
 
Join Date: Sep 2008
Location: Crescent City FL
Posts: 1,096
Vehicle: 91nissan hb
Thanks: 32
Thanked 75 Times in 69 Posts
Default

Some are probably the pump and some are the pump and sender assembly.
91nissan94 is offline   Reply With Quote
Old 08-12-2017, 02:34 AM   #6
1madmouse
1madmouse
 
1madmouse's Avatar
 
Join Date: Oct 2015
Location: Redding,CA<USA
Posts: 25
Vehicle: Nissan D21 1991,standard cab 4cyl 5spd
Thanks: 2
Thanked 1 Time in 1 Post
Default

What I am seeing is some are USA made and some are Japan made, Vin with J as first letter , made in Japan, start with 1, made in USA. I guess they are different or pressure are different. I would like to smack the guy that decided the tank can't come straight down, you have dismantle half the underside to get the tank to slide forward , then drop out. If I didn't have side boxes and a cross box, plus a lumber rack on mine, I would just pull the bed. Also some pumps come pump only, pump with screen, pump with sender, low pressure pump , high pressure pump, etc .
1madmouse is offline   Reply With Quote
Old 08-12-2017, 08:53 PM   #7
cadillacdude1975
The Gear Jammer
 
cadillacdude1975's Avatar
 
Join Date: Apr 2013
Location: Chattanooga, TN
Age: 45
Posts: 7,252
Vehicle: 87 D21 SE KC V6 2wd 5sp & 86.5 V6 SE auto
Thanks: 236
Thanked 769 Times in 715 Posts
Default

take the bed off. its 6 bolts, a wire harness connection in the pass fender well area, a ground strap underneath, and three bolts that hold the fuel filler neck to the bed. you and two friends can pick it up and walk it off the frame.
__________________
"Im officially lost" - wildbill
cadillacdude1975 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT. The time now is 02:22 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.