HONDA CIVIC FUEL PUMP NOT WORKING DIAGNOSIS
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- เผยแพร่เมื่อ 14 ต.ค. 2024
- In today's case study we take a look at a 2007 Honda Civic With a 1.8l 4 cylinder engine. The customer complaint is that the vehicle is a crank no start condition. The mechanic at the shop already verified that he did not see fuel pressure coming from the fuel pump. Follow along as I take you step by step through the diagnostic and troubleshooting process to see if we can fix this car.
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Due to factors beyond the control of Advanced Level Auto, I cannot guarantee against improper use or unauthorized modifications of this information. Advanced Level Auto assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Advanced Level Auto recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of Advanced Level Auto, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Advanced Level Auto.
Bro, please never stop making these videos. Non of them have applied to me so far but when something goes wrong at least I'll know where to go ❤
*did you find the problem??*
@6:10 that power probe should have been reading a ground key off, that's when i knew it was either a bad pump or bad ground. Great video nonetheless keep them coming
Every Technician learn from the mistake to become better, in this case looking for Power only and not for the Ground too was a mistake Case study Fail from A, B, C Technicians.
he's hooked to the power feed there
@@joemilton7552 with no power there ground should be present at all times. Likewise at the relay there should be a ground when the load goes to the pump
@@stevepecollo ah yeah gotcha
Theres no telling how many civics were scrapped because of this , thanks bro and thank god for you tube.
Now that I'm done watching 5 hours of videos of a guy rebuilding his viper engine, you're back with another case study :)
I'm having the exact same issue with an older Civic. You've given me some great ideas on how to continue. Thanks!
Great Video Eric !!
The approximate 10.4 V DC feeding out of the Fuel Pump Relay during Engine Cranking is normal. During engine cranking, the starter is pulling lots of current maybe 120 to 180 amps maybe more depending on the vehicle. That amount of amperage being drawn from the car battery will drop the output voltage of the battery to ~ 10 V DC, thats ok cause you need minimum ~ 9 V DC while cranking at the battery to start the engine. Any voltage reading less than ~ 9 V DC at the battery while cranking will probably give you starting problems, due to the fact that electronic components/sensors power voltage requirements start getting affected.
This one is a great example on the importance of grounds in any circuit👍
Great work, it was really helpful especially when it come to ground side switched circuits😉
Stay Safe👍
without a ground there is no circuit. but wait that is a misnomer since grounds are used in a/c circuits it is actually a common. but thats the way the English language works or not lol
Damn Eric you the freaking man! You should be a specialized advance automotive teacher if shops can't figure this stuff out. Awesome find man!
Im still just a student at tech school, but I'm pretty sure the 10v reading is simply KOEC battery voltage. It's great watching how good techs diag vehicles. It has helped me a ton with developing my own diag strategies.
This was an amazing video, very informative and I was on the edge of my seat the entire time waiting for you to find what the problem was. This really helped. Thank you
Hopefully lesson learned for the next Honda...check the bottom of the seats first... wonder if the fuel pump actually needed to be changed....diagnostics can save $$$$. Great video. You’re a GOAT.
Man I’ve watched tons of TH-cam automotive channels and you explain wiring diagrams better then anyone. I’ve learned so much from your channel it’s amazing. So glad I stumbled across your channel my only regret is that I hadn’t found it sooner.
Now, my favorite thing is watching your video to learn how to diagnose problems. That's really open my mind. Sometimes it is just a "click" you know. Thank you so much, Eric.
I should've explained a little clearer. Because the power probe is directly connected to the battery, it is always comparing the tip of the probe to the battery. When it sees there is an excessive amount of voltage drop between the battery and whatever it is you are trying to measure, it will not beep or light up. It will still show a reading on the display but it's telling you it's less than what the battery is reading. This is what confused me.
Do you use that to test circuit integrity instead of say a 4 amp test light on that circuit? I'm thinking of buying one specifically for that purpose. It's a pain having a bunch of homemade headlight marker lights etc.
I also have a homemade 9006 headlight bulb test light that I use, but the power probe has a built in 8 amp circuit breaker. You can use it to test ground integrity by giving it a power and looking to see if it pops the circuit breaker.
Doesnt power probe have a setting for The threshold in The power probe mode? Thank for this one Eric!
I watch every video Eric! You are good! I am working to get to the level of diagnosis you have achieved! Awesome video!
I am impressed the ways you diagnose and troubleshoot these wires 👍👍👍. Great video.
As usual, brilliant diagnostics. If your customer had load tested the circuit before replacing the pump, you might have been called sooner. Guys like you and Eric O do it so efficiently, as part of normal workflow, it takes very little time.
Hands down one of the best videos on TH-cam
Loved this Troubleshooting guide, You’re a great Teacher!! loved your “Tenacity” , Never give Up, Perseverance , that alone is a great demonstration for achieving Positive results (in Any application) You’re a Master-Tech!! Great combination for using combination of Veh. Guides and Test Probe. Good Job 👍
when you were checking the 12V at the pump, my first thought was "check the ground while you're there" there's your problem lady! good job on the diag..
Your a beast .....the common sense approach yery impressive
Well done ,it is really step by step"I am back into the car keys with me ,I'm inserting the key ,I am turning the key".thank you I am really learning changing lives
Every time I watch one of your videos I learn things I didn't know, and find alternate ways to test things. I am not a pro like you. I just learned in the side of the road and the side yard, and by browsing Chiltons manuals and troubleshooting online forums etc. Such a great source of information and entertaining as a mystery novel. Databyter
You did a amazing job thank you for making this video I wanted to buy a Honda Civic with a not reading fuel gage problem and watching your video fixing this problem make up my mind and I’m gonna buy it today 23 hundred with 114 k on it not bad at all, I’m not a mechanic but I’m mechanical inclined and I love to fix my cars myself and save a lot of money thank you again God bless you and your family.
How did it work out for you
Advanced Level Auto Great video/ Thank you so much for the video and instructions/I have learned a great deal/I Love Honda Civics I own a 2007 Lx model and runs great/By the way you spoke loud and clear on all the instructions/ You are very professional where is you shop located / Looking forward to more videos/ Thanks
Excellent repair and nice to watch how pro works! Thank you.
It seems the fuel system was trying to find a ground wherever it could. A good ground is very important. Very interesting video.
Great methodical testing. Do need to be careful on getting hung up on the unknown. You did bounce back effectively.
Me gusta mucho cuán meticuloso eres a la hora de diagnosticar! Espero que pronto tengas tu taller nuevamente! Muchas gracias! Éxitos y bendiciones
Great diagnosis as usual. How did a wire under the seat get torn as it did. Bizarre!!
someone probably took out the seats to detail the car and probably damaged the wire while removing it or installing it. The seat is pretty heavy and the rails can damage it. The paint is also scratched.
nice walk thru of diagnosing and fixing the problem.
to verify that issue that puzzling you, hook your power probe to any fuse and watch the voltage while you cranking you will see is will be in the 10's , lesson of the day when you check the power supply on any load at idle it should have ground until you energize it, by the way I wrote my first reply before I finished the video I was screaming "you have no ground" ...lol, love your videos
Thank you!
Thank you Eric. Good job again. Have a blessed and safe week to you and your family.
Great Job & people this is why it cost money at a mechanic
Eric I find all your videos useful. I look forward to seeing everyone of them. Seeing as I own two Hondas no matter what the model their systems all very closely mirror each model. Thanks again for sharing and you and family state safe and well. Artie ❤️😊😊
After watching this (and only after watching) it seams that probing the heavy green wire (power to the fuel pump) should have shown a ground light with key off as it did after your ground wire repair ” no? Great video as always and I always learn from them👍👍👍🙏
thanks for the thorough diagnosis and education including thought process and perspective!
Very cool.
I learn something new with each video you produce, thanks!
Like the review of the circuit and how one fuse and one relay feed another relay with it's separate fuse.
You know... there‘s this guy on YT who does awesome car diagnostics. He keeps saying „Always Check your powers and GROUNDS“... oh wait.. that‘s you 😉
Good video! Keep up the good work I learn a lot from your videos.
THANK YOU! Gave me a few other things to check before I replace my fuel pump. I finally know where to find that second relay !! Thanks 🙏🏼
You are a good educator in this field. Thank you,
Weren't you always going to have lower voltage on cranking due to the current draw from the starter?
Ding ding!
I also think 10.5v was due to cranking
I should've explained a little clearer. Because the power probe is directly connected to the battery, it is always comparing the tip of the probe to the battery. When it sees there is an excessive amount of voltage drop between the battery and whatever it is you are trying to measure, it will not beep or light up. It will still show a reading on the display but it's telling you it's less than what the battery is reading. This is what confused me.
Yes the 10.5V was due to cranking, but it should have been a solid 10.5V and beeped on the power probe. Usually if I don't get a tone/light on the power probe I assume I'm reading 'ghost voltage' until proved otherwise.
@@ADVANCEDLEVELAUTO nice case study. It had me thinking. Easy for me to have the answer I was sitting back drinking a coffee you were doing it live. I don't like the power probe. I prefer test light and multi meter. Keep up the good work.
Excellent diagnosis and remedy! Thanks!
Excellent video my friend. My daughters Civic has the same behavior so its time to dig into this and see what the deal is.
very informative, appreciate all the troubleshooting steps. but still dont understand how those ground wires got cut.
AWESOME video, 🙂, i bet that 'little Dude' in the picture is the real 'Mechanic' Lol 🙂, Bless 😇
I knew it was a wiring open problem somewhere before checking the relay. Following a ground path backward leads you to the problem. Because the output from the relay thru the pump thru the ground itself with the circuit unloaded the power pro should indicate a ground. My personal opinion, a trusty test lamp is my bestfriend. The 10.2 volts wasn't weak voltage. Keep in mind cranking the engine will draw over 100A easy causing a voltage drop accross entire car system. Overall good video we learn something new everyday. 😊😊
God bless you brother thanks for the video I'm praying to God that some day you will open your sjop
Generally happy to see your process. But, would be thrilled if the other factors could be equally explored and ruled out. Like faulty relay looks like what
Really good trouble shooting, I can't afford to buy the diagnostic tools you used but I have similiar problem so I will check the ground as my starter as the solonoid on my starter also stopped engaging but once I grounded directly from the battery it started working, so again a ground problem.
Thanks for that video i will used it as a guide when i get a problem with that honda...
Great case study &. electronic troubleshooting skills 👍
Nice diagnosis. Thanks for the lesson
GREAT VIDEO,seeing that 10.4 volts had me thinking it was just not a strong enough voltage.I WAS WRONG,I had the thought that maybe it had a corroded ground,but you showed me it was WAY WORSE,it had no ground and 2 broken wires.LOVED THAT,and under the seat of all places.YOU show just how important it is to look at and understand wiring diagrams.PERFECT example ,THANKS
After watching so many vids, I came across your vid. This more likely closer to my situation.
Multimeter reads at battery poles of 11.95v
Main Fuse box for the fuel pump relay (Mitsuba 7002) slot reads 11.07v (when key turn to on)
Under the dash fuel pump relay (Mitsuba 7003) slot reads 11.53v
Fuel pump line, the green and black going to connect the fuel filter assy reads 11.74v (during prime)
Fuel pump line, the green and black going to connect the fuel filter assy reads 9.30v (during cranking)
Have a good ground, checked the resistance between the black wire and battery negative pole, its 0.7 ohms.
I checked the main fuel pump relay its resistance is 0 ohms, when I supplied it with 12v.
I checked the under dash fuel pump relay its resistance is 0.1 ohms, when Isupplied it with 12v.
Just cranking and car won't start. Do'nt know what else to check..
I was screaming check grounds love your show cheers from Jacksonville Florida
Just want to say thank you for these videos, I've learned so much with the way describe everything in my terms.👍
Good find!
When you were piercing wires at the fuel pump, couldn't you have just disconnected the electrical connector first to see if the circuit wasn't open?
Good job man ! I am working on trying to start my car because not even my OBD is working, I try the pin in ports 4and 5 to check ground and it didnt work, I will go check thanks , my pump turns on
Bro I have no word to say you thanks you are fantastic guys amazing you are genius Eric bro
Very thorough, well shot, well explained video !! Thanks man.
All your videos are great source for learning you should look into teaching at a school
awesome excellent diagnosis well done
great job learning every single time thanks
Man you are 1 bad as dude,, saved another one from the junk yard.. very good job.. I really enjoy your videos thanks for your time..
This was excellent. Super throrough, explained all your thoughts. Learned a lot. Thanks
Gracias por tus videos. Me an ayudado mucho,los explicas muy bien, Sigue con los buenos videos. Saludos
You are a genius mechanic. Thanks for the video.
Excellent diagnosis! My concern is what caused the wire to be damaged so you can prevent it from happening again!
Nicely done, very informative. Keep making this kind of diagnosis videos bro. Diagnose on ignition system perhaps? thanks bro
Man bro you just saved my life wonderful video step by step your the man.
Excelente diagnóstico y trabajo. Saludos
Like your style 😎 good videos 📹 👌 thanks brother.
Thank you! I might just work on my car myself.
Man! Great Job on explaining everything, wish you well you’re a natural
Damn fine tutorial. Gonna save that to the grey matter. Thanks 4 the new Diag. Too cool.
Great video, I have a 2008 Honda Civic Ex and when I used the signal indicators my hazards come on. I check all the fuses and bulbs but no luck. Do you know if there’s a relay for the hazards/turn signals? Thank you
Nice staff mate I really learnt a lesson bad earth or broken earth wire could course to low voltage but still thinking how could it happen ?
Very good diagnosis it was timely
Another good one study case done by you thank you for that you the man
Thanks,Eric,very good.👌👍
Fantastic bro!! Thanks for teaching us
Great video! Learned very much! Carry on the good job, like it very much! Thanks.
Nice video,amazing how you do your test.my car 2910 civic won't start ,when try to start and when I step on gas pedal shut off.not codes at this time.could be fuel pump? Please let m know.
Great information thanks! !👍
Thanks - Terrific information and well explained process that you followed.. Very helpful.
I enjoyed your show. Thank you. I have a problem with my car. I have cancer stage 4. I need my car fix. Can you please give some advice. My 94 caprice wagon fuse box battery cable got hot and melt. Check engine light was on and the alternator went up and down. Replace almost everything on the car and still on. Check light. I don't have the money to take it in and I cannot fix it myself. Thank you
Just watched your video, very interesting. I myself just replaced fuel filter on my 2007 Honda, it cranks and still no start.. don't know what's next
Like #488
Thanks for the video!
That's a weird place to have cut wires!
Bro you so knowledgeable I wish I was you ..
Claw hammer? Nailed it!
Dude, you just saved me a ton of work. Thank you!
Great case study bro,not the best place to have wires under a moving seat,right? 👍
Hey my man where did u buy the piercing tool u were using !! Good information brother
Amazing diagnostic skills man. Well done!
Good stuff you went down to the heart of the problem.....
Wow what an excellent video. Great explanation
So I have a 2006 Honda civic. The pump works when the whole assembly is not compressed and not installed, but as soon as I compress the assembly or install it into the tank it doesn't work. Thoughts?
Great channel look forward to seeing your videos