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Ok I just got back,but while I was gone I thought of something I’ve been meaning to ask you.
Someone told me that some cars have the Oil Sending Unit(OSU) included into the Fuel Pump Circut. The reason being,is so if the car runs too low on oil then the “OSU” shuts off the 12v current to the Fuel Pump.
So in short what I wanted to ask of you,was if you knew if my Sentra has that type of circut?
Ok,I’m on to the T-Shooting manual NOW!Yeah the distributor was one of the first things I checked(dry as a bone)
I gotta go pay some bills,so I’ll look at the service manual as soon as I get back.
Thanks again Bro,BRB.
Please see my video.Yeah the distributor was one of the first things I checked(dry as a bone)
I gotta go pay some bills,so I’ll look at the service manual as soon as I get back.
Thanks again Bro,BRB.
Please see my video.Please realize that I’m probing my test leads into the connector that plugs into the “Fuel Tank Lid”. There is no other connection between my test point & the fuse box. No disrespect but it almost seems as if your omiting the fact that 12v is not being “Sustained” at the pump connection.
The fact that the 12v current drops to Zero within 4secs makes me think that something is shorting out & a protection device like the “Circut Breaker” shown @ 12:11 in the video you linked is shutting off the voltage.
Am I wrong in this logic,or is it normal for the 12v current to drop to Zero ?(No)Please realize that I’m probing my test leads into the connector that plugs into the “Fuel Tank Lid”. There is no other connection between my test point & the fuse box. No disrespect but it almost seems as if your omiting the fact that 12v is not being “Sustained” at the pump connection.
The fact that the 12v current drops to Zero within 4secs makes me think that something is shorting out & a protection device like the “Circut Breaker” shown @ 12:11 in the video you linked is shutting off the voltage.
Am I wrong in this logic,or is it normal for the 12v current to drop to Zero ?(No)I left the relay in place like you asked & placed my tester at the female connector that plugs into the Gas Tank Lid(Fuel Pump). My wife turned the ignition on & I saw +12v delivered to that Connector for 5 seconds,but then it drops to Zero. We retested it 4 times & it did exactly the same thing(12v for 5 seconds then drops to Zero). So I put the old relay back in & re-tested it & saw the same result.
So I pulled the relay out of its recepticle & probed my +Pos test lead into the first Line Side hole(big slots) & placed my -Neg test leed on my -Neg Battery terminal & I saw +12v Constant (No drop). I tested the other Line Side hole & got a 0v reading(as I should,rite ?).
PS:
I tested the smaller holes too,but I’ll wait & see if you even need em.I left the relay in place like you asked & placed my tester at the female connector that plugs into the Gas Tank Lid(Fuel Pump). My wife turned the ignition on & I saw +12v delivered to that Connector for 5 seconds,but then it drops to Zero. We retested it 4 times & it did exactly the same thing(12v for 5 seconds then drops to Zero). So I put the old relay back in & re-tested it & saw the same result.
So I pulled the relay out of its recepticle & probed my +Pos test lead into the first Line Side hole(big slots) & placed my -Neg test leed on my -Neg Battery terminal & I saw +12v Constant (No drop). I tested the other Line Side hole & got a 0v reading(as I should,rite ?).
PS:
I tested the smaller holes too,but I’ll wait & see if you even need em.Thank you & I’m sorry I didn’t mean to sound like a smartelleck. So should I go jumper the relay still like you asked ?
Thank you & I’m sorry I didn’t mean to sound like a smartelleck. So should I go jumper the relay still like you asked ?
I just re-read your post & I think I understand that you’re asking me to pull the Fuel Pump Relay(Brown) located in the engine compartment Fuse Box. Then jumper the contacts inside its receptical,so as to check & see if 12v will then get delivered to the pump(is that rite?).
Please excuse me,but this is rite about where I start getting confused. So bare with me ok ?
You stated that there is also a “ECM Relay to check”.
I am not familiar with a ECM Relay,is that the brown relay located in my engine compartment fuse box ?Because I know of only 2 fuses that control my Fuel Pump. The first is located in my “Under-Dash Fuse Box”(a small 15amp) & the second is a big brown square relay located in my engine compartment fuse box.
PS:
Excuse me but in my first post I had stated that I’d put new Battery terminals,a New Fuel Pump Relay & checked all the Fuses remember? Anyway I’m off to try the step you suggested. BRBI just re-read your post & I think I understand that you’re asking me to pull the Fuel Pump Relay(Brown) located in the engine compartment Fuse Box. Then jumper the contacts inside its receptical,so as to check & see if 12v will then get delivered to the pump(is that rite?).
Please excuse me,but this is rite about where I start getting confused. So bare with me ok ?
You stated that there is also a “ECM Relay to check”.
I am not familiar with a ECM Relay,is that the brown relay located in my engine compartment fuse box ?Because I know of only 2 fuses that control my Fuel Pump. The first is located in my “Under-Dash Fuse Box”(a small 15amp) & the second is a big brown square relay located in my engine compartment fuse box.
PS:
Excuse me but in my first post I had stated that I’d put new Battery terminals,a New Fuel Pump Relay & checked all the Fuses remember? Anyway I’m off to try the step you suggested. BRBYes I checked my ECU for water damage last nite,but I saw no wetness of any kind. In fact the ECU was all dusty & my carpet was completly dry. I just finished watching the videos you linked & it reminded me to tell you that my car was in an accident aprox 3yrs ago.
I clipped a Malibu from behind. So my drivers side front bumper got pushed back into my fender. My cars 2 engine compartment “Fuse Blocks” are located on that side & both harnesses run behind my the fender liner on that side. I’m currently watching the last video you linked & expect to be done in approximately 15mins.
Meanwhile please allow me to show you what I found when I checked to see if voltage was being delivered to the female plug that connects to the plastic tank lid under the back seat. You’ll notice the bottom rite terminal(Ground)is slightly blackened & melted to the point where the ground terminal is slopping back & forth(Loose) & you can even see daylight shinning through it. In other words the ground terminal is getting hot!
Yes I checked my ECU for water damage last nite,but I saw no wetness of any kind. In fact the ECU was all dusty & my carpet was completly dry. I just finished watching the videos you linked & it reminded me to tell you that my car was in an accident aprox 3yrs ago.
I clipped a Malibu from behind. So my drivers side front bumper got pushed back into my fender. My cars 2 engine compartment “Fuse Blocks” are located on that side & both harnesses run behind my the fender liner on that side. I’m currently watching the last video you linked & expect to be done in approximately 15mins.
Meanwhile please allow me to show you what I found when I checked to see if voltage was being delivered to the female plug that connects to the plastic tank lid under the back seat. You’ll notice the bottom rite terminal(Ground)is slightly blackened & melted to the point where the ground terminal is slopping back & forth(Loose) & you can even see daylight shinning through it. In other words the ground terminal is getting hot!
Thanks for understanding & being available,I’m at the page you linked but truth is I don’t really know where to start troubleshooting. I mean sure,I know how to look at a diagram but I don’t know exactly what step to perform next. So I guess I’ll go poke around a bit & wait for your next reply.
Since I know the fuel pump is working,I’m going to go check & see if a 12v current is making it back to the connector that plugs into the Gas Tank Lid(like you asked).
PS:
I downloaded the entire manual to my hard drive. However,I noticed it’s for the “1993” Sentra. No Biggie Rite ? And what do you think about my questions regarding the lil spark at my Batttery Terminal & the faint clunk at my ECU ?Thanks again College Man.
Xproject187.Thanks for understanding & being available,I’m at the page you linked but truth is I don’t really know where to start troubleshooting. I mean sure,I know how to look at a diagram but I don’t know exactly what step to perform next. So I guess I’ll go poke around a bit & wait for your next reply.
Since I know the fuel pump is working,I’m going to go check & see if a 12v current is making it back to the connector that plugs into the Gas Tank Lid(like you asked).
PS:
I downloaded the entire manual to my hard drive. However,I noticed it’s for the “1993” Sentra. No Biggie Rite ? And what do you think about my questions regarding the lil spark at my Batttery Terminal & the faint clunk at my ECU ?Thanks again College Man.
Xproject187.
