No power to fuel pump - New Tiburon Forum : Hyundai Tiburon Forums
 
User Tag List

 1Likes
  • 1 Post By ltlump
 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 10 Old 04-09-2019, 09:28 PM Thread Starter
NewTiburon.com Newbie
 
IronTib's Avatar
 
Join Date: Mar 2014
Location: Ohio
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
IronTib is an unknown quantity at this point
Garage
(Thread Starter)
No power to fuel pump

I have a 2003 GT 6 speed bone stock no mods 157k miles . Fuel pump not kicking on at all, pump works when 12v are applied manually. I have checked the relays(under hood) and all relays are good cause I tested them on the horn slot. I changed the fuel pump last year around the same time and I just put a new one in (3/26) before testing for power in which I do not have power to the pump. any ideas? I have looked all over to see if I could find a short but so far 0 issues with wiring anywhere on the car. Every fuse is good and did not find any blown anywhere. This car is not equipped with anti-theft. Need some angles to hunt this issue down so any ideas are much appreciated.
IronTib is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 04-09-2019, 10:43 PM Thread Starter
NewTiburon.com Newbie
 
IronTib's Avatar
 
Join Date: Mar 2014
Location: Ohio
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
IronTib is an unknown quantity at this point
Garage
(Thread Starter)
Re: No power to fuel pump

I have power while key is on at the center pin (i believe that's the fuel gauge?) but no power to the main power pin which is pointed at in red, no power in the initial 2 secs for priming and no power whilst cranking. I took a pic of the pump since I have it here at home and I am not at the car's location and I still have it cause its fine since its a power issue now and not the pump itself.
Attached Images
  

Last edited by IronTib; 04-09-2019 at 11:30 PM. Reason: added content
IronTib is offline  
post #3 of 10 Old 04-09-2019, 10:48 PM
NewTiburon.com Newbie
 
Join Date: Dec 2018
Posts: 40
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
ltlump is an unknown quantity at this point
Garage
Is the pump making any noise when you first turn the key?, If the pump is functional and you're not hearing it prime up I'd guess the problem is the cable between ecu and the pump but I'm no expert.
ltlump is offline  
 
post #4 of 10 Old 04-09-2019, 10:55 PM Thread Starter
NewTiburon.com Newbie
 
IronTib's Avatar
 
Join Date: Mar 2014
Location: Ohio
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
IronTib is an unknown quantity at this point
Garage
(Thread Starter)
Re: No power to fuel pump

no noise at all, no power to main pin
IronTib is offline  
post #5 of 10 Old 04-11-2019, 01:56 PM
NewTiburon.com Expert
 
Join Date: Apr 2016
Location: Boston, MA
Posts: 383
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 93 Post(s)
aveenav
Re: No power to fuel pump

try swapping out the fuel pump relay with other known good.

05 Tib GT v6, 2.7L, 5MT, 130K miles, black, Mussa Catback exhaust
aveenav is offline  
post #6 of 10 Old 04-11-2019, 04:57 PM Thread Starter
NewTiburon.com Newbie
 
IronTib's Avatar
 
Join Date: Mar 2014
Location: Ohio
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
IronTib is an unknown quantity at this point
Garage
(Thread Starter)
Re: No power to fuel pump

Quote:
Originally Posted by aveenav View Post
try swapping out the fuel pump relay with other known good.
i swapped all relays that are the same with the fuel pump with the horn relay which is the same and all work. thanks for the reply
IronTib is offline  
post #7 of 10 Old 04-11-2019, 04:59 PM Thread Starter
NewTiburon.com Newbie
 
IronTib's Avatar
 
Join Date: Mar 2014
Location: Ohio
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
IronTib is an unknown quantity at this point
Garage
(Thread Starter)
Re: No power to fuel pump

Trying to eliminate the possibility of the ecu before I pull it is there an easy way to check this? I know the ecu is a PITA to get out in this car.
IronTib is offline  
post #8 of 10 Old 04-11-2019, 10:52 PM
NewTiburon.com Newbie
 
Join Date: Dec 2018
Posts: 40
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
ltlump is an unknown quantity at this point
Garage
Re: No power to fuel pump

Only thing I can think to do is check voltage on the ECU pin directly, which sadly involves getting to it. That being said odds are if there's a break in the wire between the two it'll be right at or near the plug to the pump itself. It might be worth popping the plug open and checking for voltage on the wire if you haven't.
IronTib likes this.
ltlump is offline  
post #9 of 10 Old 04-12-2019, 02:04 AM Thread Starter
NewTiburon.com Newbie
 
IronTib's Avatar
 
Join Date: Mar 2014
Location: Ohio
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
IronTib is an unknown quantity at this point
Garage
(Thread Starter)
Re: No power to fuel pump

Quote:
Originally Posted by ltlump View Post
Only thing I can think to do is check voltage on the ECU pin directly, which sadly involves getting to it. That being said odds are if there's a break in the wire between the two it'll be right at or near the plug to the pump itself. It might be worth popping the plug open and checking for voltage on the wire if you haven't.
The pump does run when I jumper the relay holder
IronTib is offline  
post #10 of 10 Old 04-12-2019, 01:42 PM
NewTiburon.com Post Master
 
dmdicks's Avatar
 
Join Date: Jan 2004
Location: Aurora, CO
Posts: 7,688
Mentioned: 67 Post(s)
Tagged: 3 Thread(s)
Quoted: 1000 Post(s)
dmdicks is a splendid one to beholddmdicks is a splendid one to beholddmdicks is a splendid one to beholddmdicks is a splendid one to beholddmdicks is a splendid one to beholddmdicks is a splendid one to beholddmdicks is a splendid one to behold
Re: No power to fuel pump

I had a similar problem when I upgraded to the DW65c. Turns out I was exceeding the amperage of the relay and it would switch off. I plopped in a slightly higher capacity relay and problem solved. You gotta be careful not to exceed the rating of the supply wires though as they could melt.

Huffin E85 and lovin every minute of it!!

Hit me up on gmail chat
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
dmdicks is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the New Tiburon Forum : Hyundai Tiburon Forums 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.

Email Address:
OR

Log-in










Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
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