IS F (2008-2014) :: Exhaust Thump Sound When Car Is Rolling Along Around 25 MPH Or So
Oct 22, 2014
Having a sound from my exhaust. Basically when the car is rolling along around 25 MPH or so, and my foot is not on the gas, as soon as I gently touch the gas pedal, I get a soft "thump" sound. This basically tends to happen in 5th or 6th gear only.
The previous owner had done a muffler delete on the stock exhaust so I figured there was some sort of back pressure issue because of this.
Finally out of frustration, I sprung for a new Borla Catback exhaust system, hoping to eliminate this issue. While the thump sound is slightly less, it still happens!
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I just got a brand new 2008 F150 supercrew FX2 last wed. I love it, it's my first truck ever and I'm excited to drive it. I wanted to change the exhaust to something that has a low rumble and is deep, not too loud or anything.
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i cant find the dyno post but didnt the isf make more power with headers and stock exhaust?
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Went to a road course for the first time on Sunday. After about 10 laps the car started smoking bad from the exhaust. The smoke was thick and white. There were professional drivers present (driving school) as well as a lexus service manager there looking at the car after the run. The smoke was thick but without that sweet smell of coolant. This was the hardest the car has ever been run but also maintained normal oil and coolant temperatures. After a bit of resting the smoke cleared up and never came back, my drive home was 2 hours long and car still seems ok. Engine sounds good, oil very clean, what could it have been? I have no cats so its going to be more obvious than normal.
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I shift at certain rpms from 1st-2nd just to hear the burble / popping out of the exhaust.. I hold it around 3k and the shift and let off the gas and it's a Orchestra of amazing noises that are Oh so addicting. Secondly, are there any negatives to doing this? Or that sometimes I hear the loud thud / pop when slowing down but not everytime . What is the true cause of these glorious noises.
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Been researching exhausts a bit and getting information about the full PPE header and PPE Dual mode exhaust to review?
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So I just wanted to ask 2 things.. Am I the only person who purposely shifts at certain rpms from 1st-2nd just to hear the burble/popping out of the exhaust.. I hold it around 3k and the shift and let off the gas and it's a Orchestra of amazing noises that are Oh so addicting. Secondly, are there any negatives to doing this... Or that sometimes I hear the loud thud/pop when slowing down but not every time... What is the true cause of these glorious noises.
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I have a question with aftermarket exhaust (particularly JoeZ and Borla) I was wondering after you installed the exhaust do you now get increased exhaust fume smells in the cabin when the windows or moonroof is open? When I had my 350(F-sport exhaust) I couldn't cruise with the moonroof open without filling the cabin up with fumes.
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So I believe I have a crack in the Exhaust Manifold... When I rev the car I can hear a slight tick. I had taken it to a shop to do a muffler delete and said that there may be a leak or crack somewhere. The tech said it wasn't too bad but it may be something to keep an eye on. My question is, what would be the best route to go? Is this a common issue with the ISF? I was thinking if it was also possible if it may just be the gasket, which the tech also said it could be. I have a 2008 model with about 113k miles on it.
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just recently installed the new X force exhaust system on my 2008 ISF with 72,000 miles on it. I've had the exhaust on the car for about 300 miles it when I was driving home from work today the vsc and check engine light pops up. I turn the car off when I got home and then turned it back on the check engine light was off but the stored Code was still there when I read it with the scanner P0420. I'm thinking maybe there's an exhaust leak even though it sounds fine.
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5.0 coyote exhaust leak .. Since the cold weather has arrived i have noticed a new noise. During cold start engine warm up I hear a nice little tick-tick-tick which sounds to me like an exhaust leak. Is this a common problem? I have just over 58,000 miles would this be covered under powertrain or do they have some nice exclusions for exhaust?
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So I finally went and put the exhaust I had been wanting on my truck. Pretty simple set-up. I had the factory muffler cut off and a flowmaster 40 series on it previously. I liked the sound under load and at cold start but normal driving I could not tell a difference from a factory muffler. So I had the flowmaster removed. I still have 4 cats so it's not crazy but it is loud. The only time I have cackle is on initial start-up not even at WOT which was a pleasant surprise. I just like the look of a single exhaust but still want some sound. I have been gone awhile as I needed a little break from starting and also being drawn in to arguments.
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I purchased my 2008 Explorer Ltd about 4 months ago with a 4.6L and 63k miles. I use it for towing a small travel trailer, so I don't put many miles on it. It's got about 66k on it now. According to OASIS, it has had all MFR maintenance performed up to the 60k mark.
In the past two months, it has developed a "sound" on startup. it goes away after about 75 seconds. To me it sounds like a typical exh manifold leak. That "3 cylinder, putt putt putt tractor" sound. There is no apparent affect on performance. It is definitely coming from the area of cyl #1. I have a recording here.
[URL]....
It is the "higher" of the sounds. The lower pulsing/whooshing is just regular engine noise. You can hear the regular engine noise as the camera pans to the back of the car.
What puzzles me is that the exh manifold sound goes away after 75 seconds or so. Holding the tailpipe shut for a bit builds up lots of pressure quickly. Do you think it IS, in fact, an exh manifold leak, and it seals up with thermal expansion as the engine worms up (75 seconds)? Is this a typical issue with the 4.6L
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Well I have 8000 miles on my 12 Eco now and it has been the best vehicle I have ever owned but it has always shifted rough, Mainly into 3rd gear but you could always feel it downshifting when rolling up to a stop sign also, I just assumed it was the way it was suppose to be. This morning I was driving it and noticed it was shifting very nice and smooth, no downshift braking or the other little issues.
I also noticed the the select shift was turned off (the numbers on the dash 1-6) if you push the + button on the shifter you can turn them off, I have had it turned on since I bought the truck because I kind of liked the display but anyway with the select shift turned off the transmission shifts very nice, I turned it back on and the rough shifting returned, Try it on yours to see if it changes.
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On my way home from work tonight cruising on the highway, heard a loud thump followed by continuous thumps thereafter. Knowing this wasn't good pulled over to find a nice big nail in my passenger side front tire, great. thought I could make it home, I was about 6 exits away...one exit later nail flew out and tire was loosing air.
- luckily for me, I had a friend who lived nearby the exit the nail flew off and put on the spare.... now my question is I noticed some camber wear on the tire.. 15,200 miles to be exact on the stock oem bridgestones.
- I know these tires are complete crap but... is this camber wear normal? I've seen other posts about it but, is it the tires? or something to do with the car? I am pretty sure my alignment is fine. If I buy a new set of tires eventually will this end up happening again? Trying to gain some knowledge for the future.
Also is it true that with AWD cars, if you change one tire you have to change all 4? because it might mess up the drivetrain or something, at least that's what I was told.
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I am looking at 2013 FX4 with the 5.0 that has 127,000 miles. Truck is pretty clean cosmetically except for the inside of the bed which is pretty rough. When I went to look at the truck I was curious to hear it on initial start up and it was really quiet. I have never heard in person the dreaded knock of the 5.0, only on youtube. After the truck idled for 10min while we talked I did kinda start to hear a little deep but very light thwump, thwump, thwump but it would fade at times and you wouldn't hear anything. I never heard it while I drove the truck. I know there are prob millions of these motors out there and the internet may make it seem worse than it is but would it scare you to buy a 2013 with 127K? I had thought originally that the 2011-2012 were the years with the problems but the latest 5.0 knock thread has me wondering.
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For last couple of days the car is making a Thump sound when the engine turns over. then it gone- single thump sound....It only happens in the morning if the car is sitting in the garage overnight. I do not hear it if i park the car at work after 8 hours does not make the same sound.
I also feel it takes a bit tad longer to start the car(again only in the morning)- i thought it was the battery but the battery has been replaced 2 years ago.
i will try to record the sound tomorrow and post it. the car is fine once started no funny sounds or anything. Its a 2011 with 71k miles on it.
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I just purchased my Elantra MD for just 2 years. Yesterday I went uphill (not steep) then decide to change from auto to manual, then I move the stick, it shows I am currently in gear 5 so i downshift to 4. After a few second the was a 'jerking' with 'thump' sound from the bay. My rpm came down slowly, i pushed the pedal but the rpm wont go up. it just glide. Shut down and up the engine changed nothing. When i try put reverse gear, it reversed fast as if i pushed the pedal, but i am not.
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I am having a strange issue with my truck. It is a f150 2009 xlt ext cab 4x4 5.4 liter
For the past 2 weeks I've had this light thump about 1 or 2 seconds after the truck starts driving,not really annoying but it kinda got me wondering
Since last week it makes a weird scraping noise from the rear end when coming to a stop (10-0 kmh) it doesn't do it all the time though
For a couple days now it makes this terrible squeaking/scratching/whatever(very loud) noise from the rear end when i accelerate from a dead stop, the one time when i crossed a highway, last night when i backed out of a parking spot (again not all the time).
Also when driving through a parking lot,hitting a few bumps and dips I can hear a rattling noise coming from underneath the truck.
Transfer case due for replacement? I don't know what this could be.....
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So I've noticed an annoyance with my car lately. I've noticed when I turn either right or left upon starting my car, that i hear a small sound, as if a marble is rolling along the inner windshield but it never runs the entire length of the car to the other side. I have noticed when I make a right turn, it occurs on the right corner of the windshield. When I make a left turn it occurs on the left corner of the windshield. Never runs all the way across the windshield like something is actually rolling along the windshield edge or behind the dash.
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About a week ago I started hearing this creaking sound from the front end when rolling slowly, in or out of gear, but not all the time. Today I heard it all through the stop and go traffic in NYC, and louder than ever (even my wife admitted that it existed!) but later, traffic eased up, and during and after about 40 mins. of 60 mph, the sound was gone, even when we re-entered town traffic. We parked briefly during the noisy period this morning, and I was able to reproduce the sound when pushing the front end down. Now, after the highway driving, no sound! Nothing else seems to be wrong. What the heck could this be? CV joint? Tie rods? control arms? The steering?
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