Dodge

Dodge Repair Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Dodge

I have a 99 ram 1500 5.9 4wd when I turn the truck off

Customer Question
Hello I have a 99...
Hello I have a 99 ram 1500 5.9 4wd when I turn the truck off sometimes I can hear the gas gurgling in the tank?
Submitted: 1 year ago.Category: Dodge
Show More
Show Less
Ask Your Own Dodge Question
Answered in 37 minutes by:
1/29/2016
Dodge Mechanic: camerontech, Auto Mechanic replied 1 year ago
camerontech
camerontech, Auto Mechanic
Category: Dodge
Satisfied Customers: 588
Experience: diagnostic auto tech
Verified

hi there

im cam, a licenced diagnostic tech.

there is a good chance it is just the fuel pump module releasing pressure when the pump is not running.

there is a pressure/ backflow valve inside the fuel pump module assembly, and these can leak pressure.

the only way to check this is to hook a fuel pressure gage up and shut the vehicle off. it should hold pressure.

I would not be too concerned about this if the truck is starting ok and not extended cranking.

monitor to see when you take the fuel cap off, if this stops, than this is just the tank into a vacuum from the purge valve and this is normal untill the tank equalizes pressures.

if its either of these, i would not be too concerned as long as it starts ok and the fuel cap is not excessive issues when removing

Ask Your Own Dodge Question
Customer reply replied 1 year ago
New fuel pump and it did it before and after and was a factory fuel pump replacement,
Customer reply replied 1 year ago
Truck has 225k hard miles on it and it is only recently this problem happened fuel pump failed replaced it and it still does it
Dodge Mechanic: camerontech, Auto Mechanic replied 1 year ago

do you have any trouble codes stored in the evap system?

Ask Your Own Dodge Question
Customer reply replied 1 year ago
No codes and no evap leaks checked via smoke leak tamer and innova scanner
Customer reply replied 1 year ago
New rollover valve oem installed at time of fuel pump
Dodge Mechanic: camerontech, Auto Mechanic replied 1 year ago

when you remove your fuel cap, does it sound like it has excessive vacuum?

Ask Your Own Dodge Question
Customer reply replied 1 year ago
No more than normal
Dodge Mechanic: camerontech, Auto Mechanic replied 1 year ago

ok,

im going to open your question up for another tech.

sorry i could not help you any further, but another tech will jump in to assist you further

Ask Your Own Dodge Question
Dodge Mechanic: Dodgerench, ASE Certified Technician replied 1 year ago
Dodgerench
Dodgerench, ASE Certified Technician
Category: Dodge
Satisfied Customers: 3,412
Experience: 30+ years Dodge/Chrysler exp., ASE Master with L1 certification. Driveability/ combustion specialist
Verified

Hi, this is Ed. Thanks for sticking with us!

Are there any symptoms besides the gurgling noise?

Cameron's thought about the fuel system reversion is completely valid, but it would also involve a very long crank time to replace the liquid fuel being pushed backward and into the tank.

Does the truck start easily after sitting with the gurgling sound?

Or does it take longer to restart, possibly with rough running at first?

And I have to ask; how sure are you that the sound comes from inside the fuel tank?

The truck is run hard and that's all good. Does it matter if the truck was driven lightly or not for the sound to happen?

Talk in a bit,

Ed

Ask Your Own Dodge Question
Customer reply replied 1 year ago
Starts no issues no matter how driven and when gurgling
Dodge Mechanic: Dodgerench, ASE Certified Technician replied 1 year ago

Thanks. I saw your response on my email notification but for some reason it hasn't shown up here.

So it starts OK when gurgling.... that strongly suggests that the sound isn't being caused by fuel reversion from a hot engine. It will always, always take longer to get an engine to start when vapor replaces liquid fuel.

What about engine heat, engine load or outside temperature when you hear the sound?

Does it happen only after the truck has been run hard or is it the same when just driven to DQ?

And... how certain are you that the sound comes from the tank?

Ed

Ask Your Own Dodge Question
Customer reply replied 1 year ago
100% positive it's coming from the tank put a stethoscope up to it and hear it in the filler neck when I take the gas cap off doesn't matter towing driving empty it does it all the time
Customer reply replied 1 year ago
Has a hd fan clutch on it and a heavy duty radiator and an additional remote mounted trans cooler so it never gets above 190* no matter the grade or weight
Dodge Mechanic: Dodgerench, ASE Certified Technician replied 1 year ago

Interesting. Taking a sound sample right from the tank is a great piece of info.

How soon in a drive cycle can you go before the noise happens?

Does it HAVE to be run hard?

Ask Your Own Dodge Question
Customer reply replied 1 year ago
Driven grandma or loaded down seems to not matter worse in the summer but still prevalent in colder weather short or long drive only time it seems to not do it is when it's on a low fuel light and I pull up to the tank
Customer reply replied 1 year ago
Pump sorry
Dodge Mechanic: Dodgerench, ASE Certified Technician replied 1 year ago

I guess that fits. Less fuel means less opportunity for bubbles to gurgle up through tank volume.

Is there an exhaust pipe that has been moved closer to the tank than it originally was?

Or the loss of a heat shield?

Ask Your Own Dodge Question
Customer reply replied 1 year ago
No sir does have headers and cat back exhaust but still all on factory hangers on the other side of the driveshaft in factory location
Customer reply replied 1 year ago
It's been to dodge and they had the situation occur and still could not give me an answer
Dodge Mechanic: Dodgerench, ASE Certified Technician replied 1 year ago

I'm running out of ideas myself!

Gurgling does suggest that vapor (or air) is being introduced below fuel level. The engine runs on vacuum alone, so unless you have a blower on the 5.9 I'm running out of ideas.

Give me a few minutes to agonize and I'll get back to you.

Ask Your Own Dodge Question
Customer reply replied 1 year ago
Hahahahah I'm in the same boat
Dodge Mechanic: Dodgerench, ASE Certified Technician replied 1 year ago

Dang, didn't help.

These units regulate fuel pressure from inside the tank and only send usable fuel volume forward. Gas isn't exposed to engine heat and returned like in the old days, so unless the fuel gets boiled and overcomes a check valve in the tank, it's not a possibility for the gurgling sound.

And you'd absolutely have trouble restarting the engine, so we can cross that off the list.

Another quick question.

Does the gurgling stop after you start the truck?

Not sure where that'll lead, but I'm running out of ideas.

Ask Your Own Dodge Question
Customer reply replied 1 year ago
Obviously couldn't tell u when driving but when I start the truck it still does it
Dodge Mechanic: Dodgerench, ASE Certified Technician replied 1 year ago

Ow.. Brain hurts.

I think you've already stated this, but for clarification purposes...

Does removing the gas cap influence the noise at all?

Ask Your Own Dodge Question
Customer reply replied 1 year ago
Yea normal sound u get from all vehicles
Dodge Mechanic: Dodgerench, ASE Certified Technician replied 1 year ago

Some hiss but it doesn't change the gurgling?

Ask Your Own Dodge Question
Customer reply replied 1 year ago
Same hiss and doesn't stop the gurgling if I leave the cap on or off the gurgling will continue some where between 10 and 20 min and eventually goes away have had this issue a long time doesn't seen to affect the drivability, I'd like to think it effects the fuel mileage but it's the 5.9 gutless gas hog and avg of 14 is prob the best it gets
Customer reply replied 1 year ago
I exhausted all my knowledge and thought maybe I'm not thinking outside of the box and that's when I turned to just answer
Dodge Mechanic: Dodgerench, ASE Certified Technician replied 1 year ago

Thanks. I'm still running the info but don't have a good answer at this point.

The hiss tells us that a pressure differential is being equalized. It can be from vacuum inside the tank or pressure being released-- both are possible with evaporative purge flow and heat buildup.

If you wouldn't mind taking more time, put your nose next to the gas cap the next time you have an opportunity to twist the cap when the tank is gurgling. If you smell fuel odor, it's a pressure release. If no smell is noted, it's likely vacuum and air is being drawn into the tank.

The difference in possibilities is great. If the tank is being cavitated, you may be boiling fuel at low temperatures due to the loss of atmospheric pressure. A release of gas fumes from the cap suggests that the tank is being pressurized from heat, but I can't identify the source at this point if that's true. It's most likely a cavitation problem, but it should stop almost immediately when the cap is cracked. Boiling from heat would likely get worse with loss of cap pressure and I'd expect the noise to increase at that point.

So... no, I don't know the answer. If you wouldn't mind taking the sniff test when convenient, I'd be interested in hearing the results. It would at least identify whether the tank is operating at a high or low pressure, which may make it possible to diagnose.

It's a weird one, I'll give you that!

Ask Your Own Dodge Question
Customer reply replied 1 year ago
Absolutely
Dodge Mechanic: Dodgerench, ASE Certified Technician replied 1 year ago

We're in agreement. Let me know what you find.

Ask Your Own Dodge Question
Customer reply replied 1 year ago
I did not receive an answer so why is it I'm being charged a week later 38?
Dodge Mechanic: Dodgerench, ASE Certified Technician replied 1 year ago

The last time we talked, we agreed that you would do a sniff test of the gas cap area and I've been waiting to hear back from you.

Ask Your Own Dodge Question
Customer reply replied 1 year ago
It's going to smell like gas cause it's a gas tank
Dodge Mechanic: Dodgerench, ASE Certified Technician replied 1 year ago

Not if the hiss is air being drawn into the tank rather than vapor rushing out. What I'm trying to establish is whether you have vacuum or pressure in the tank. You won't smell anything if it's vacuum.

Ask Your Own Dodge Question
Customer reply replied 1 year ago
It expels out no vacuum
Customer reply replied 1 year ago
The gurgling in the tank tells that answer says to me that there is air entering the fuel in the tank
Customer reply replied 1 year ago
not to be rude but it seems I'm repeating all the steps I have already taken, I understand u have to do a diag run thru to get the info to try and diagnos the problem but it seems we are both stumped seems I should get my 38$ back
Dodge Mechanic: Dodgerench, ASE Certified Technician replied 1 year ago

That's cool. There should be a tab to connect with JA customer service somewhere on your screen. They'll take it from there.

Ask Your Own Dodge Question
Ask Jerry Your Own Question
Jerry
Jerry
Jerry, Master Mechanic
Category: Dodge
Satisfied Customers: 1,754
1,754 Satisfied Customers
Experience: ASE Master tech, 30 years exp. troubleshooter, driveability tech

Jerry is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I AM VERY GLAD THAT I TOOK A CHANCE ON YOUR PROBLEM SOLVING SKILLS. I WAS SUCCESSFUL IN REPLACING THE FUEL PUMP. MY TRUCK RUNS LIKE A CLOCK. IT RUNS LIKE THE DAY I BOUGHT IT. NO LUNGING FORWARD, THE TURBO REACTS THE SECOND I STOMP ON THE GAS, AND IT HAS A LOT MORE POWER AND EVEN SOUNDS BETTER TO ME. IT SAVED ABOUT $500.00 BY DOING THE WORK MYSELF. I GIVE YOU ALL THE CREDIT FOR YOUR DIAGNOSING THE PROBLEM, JUST FROM THE SYMPTONS I GAVE YOU OVER THE e MAIL. I WILL USE YOUR WEB SITE AGAIN AND REFER MY FRIENDS. THANKS SO MUCH FOR THE HELP.

TOM WHITTAKERUSA

Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless!

Rev. Jerry BaysingerHolts Summit, Mo

I recently asked a question about my 2005 dodge ram, and I just wanted to let my Expert know that he hit the nail squarely on the head with his answer. I wanted to thank him again.

GregPittsburgh, PA

Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless!

JerryHolts Summit, MO

I was skeptical at first but thought I'd give it a try. I was pleasantly surprised. Your site actually is a quality service that I would recommend to others in a heartbeat.

StanSayre, PA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

< Previous | Next >

Meet the Experts:

Jerry

Jerry

Master Mechanic

1,754 satisfied customers

ASE Master tech, 30 years exp. troubleshooter, driveability tech

Chris

Chris

Shop Foreman

6,753 satisfied customers

Dodge/Cummins and Chrysler Certified Master Tech

Mopar Certified

Mopar Certified

Dodge Technician

5,939 satisfied customers

24 Year Chrysler/Dodge Certified Specialist

moparfl

moparfl

ASE Certified Technician

3,292 satisfied customers

ASE Master Tech Gold level Chrysler Status 30 years dealership exp

Dodgerench

Dodgerench

ASE Certified Technician

3,412 satisfied customers

30+ years Dodge/Chrysler exp., ASE Master with L1 certification. Driveability/ combustion specialist

Tim Mohr

Tim Mohr

ASE MASTER TECH

2,322 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Don - Mo Lurch

Don - Mo Lurch

Aftermarket & Factory Electronics

1,568 satisfied customers

Cert. Dodge & Chrysler Warnty, Heavy Line Mech, Mobile Electronics. Sales, Installation & Repair for 30 years

< Previous | Next >

Related Dodge Questions
how do I remove the input shaft from my manual transmission
how do I remove the input shaft from my manual transmission on a 2004 dodge ram 1500. I have removed the transmission and the cover on the input shaft… read more
Brad
Brad
Technician at Dodge Dealership
Vocational, Technical or Trade Scho
12 satisfied customers
Ram 1500: what is causing the idle surge..RPMs...park
what is causing the idle surge with my 06 ram 1500, 4.7L. Happens at start up, hot or cold, 1000 - 1500+ RPMs. Now it is begining to happen when I put it in park. AC on or off, no change. Milage is do… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
dodge ram 1500: trans is not shifting to next gear..high rpm..highway
04 dodge ram 1500 atuo trans is not shifting to next gear at high rpm. when getting on highway… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
2001 Dodge ram 1500 4x4. The brake lights come on randomly
2001 Dodge ram 1500 4x4. The brake lights come on randomly when truck is parked. What is problem and fix?… read more
joeplow
joeplow
Retired-Disabled
Master Aamco
1 satisfied customers
I have a 2005 dodge ram 1500, and i need to know what
i have a 2005 dodge ram 1500, and i need to know what transmission is in it. here is my vin. 1D7HU18N65S13333 … read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
I have a 2005 dodge ram 1500, and i need to know what
Second opinion] i have a 2005 dodge ram 1500, and i need to know what transmission is in it. here is my vin. 1D7HU18N65S13333… read more
Chris
Chris
Shop Foreman
6,753 satisfied customers
The 5.7 engine in my 2009 Ram 1500 Laramie has over 200k and
The 5.7 engine in my 2009 Ram 1500 Laramie has over 200k and just about done. I have located a 2016 5.7 out of a truck that was wrecked in the rear with 7k. Will this work in my truck as a fairly stra… read more
Tim Mohr
Tim Mohr
ASE MASTER TECH
Master's Degree
2,322 satisfied customers
My 2007 Dodge ram 1500 Quad cab parking light not working on
My 2007 Dodge ram 1500 Quad cab parking light not working on the passenger side … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,420 satisfied customers
Just tried to help someone jump their car with my RAM 1500
just tried to help someone jump their car with my RAM 1500 ecodiesel and the cables got hooked up backwards. There was a little smoke and I quickly disconnected, but radio, and heated seats/steering w… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
1999 Dodge Ram 1500 Brakes. This truck has good brakes as as
1999 Dodge Ram 1500 Brakes. This truck has good brakes as long as you are braking reg. but if you have to jumps on them hard it wont stop. It crystalize the drum shoes roters and pads .Have replaced 3… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
DODGE RAM 1500 INTERMITTENT TALL. This is a difficult one
DODGE RAM 1500 INTERMITTENT TALL JA: Okay, I'll connect you to the mechanic to discuss this further with you. Before I do, is there anything else you want him to know? Customer: This is a difficult on… read more
Chris
Chris
Shop Foreman
6,753 satisfied customers
Have a 2014 Ram 1500, engine light came on and i am getting
Second opinion] Have a 2014 Ram 1500, engine light came on and i am getting U11E9 and U0140 codes … read more
Chris
Chris
Shop Foreman
6,753 satisfied customers
I have a Dodge Ram 1500 with electrical issues. 2002. I'm
You can't plug yo the system to find issues. And yes… read more
Kavey
Kavey
86 satisfied customers
I have a Dodge Ram 1500 pickup truck overheated put water in
I have a Dodge Ram 1500 pickup truck overheated put water in now it will not start … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
No heat. 2004 Ram 1500. Ignition switch. Piggy back has
No heat JA: Have you checked to make sure the thermostat is working? What about the coolant level? Customer: Yes JA: What is the model/year of your Dodge? Customer: 2004 Ram 1500 JA: Are you fixing yo… read more
roy
roy
Associate Degree
3 satisfied customers
2008 ram 1500 has power to fuel pump and gauges starter good
2008 ram 1500 has power to fuel pump and gauges starter good but will not turn over when ignition switch turned to start … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,420 satisfied customers
2007 Dodge Ram 1500 Truck no electrical- ignition or
2007 Dodge Ram 1500 Truck no electrical- ignition or headlights, 16 volts across battery, replaced ignition switch & starter nothing … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,420 satisfied customers
There is no power to the coil. Consistent. 1999 ram 1500
Yes. I've tried another coil, ground and putting power to the wire that connects to the coil and all the fuses … read more
roy
roy
Associate Degree
3 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x