Anyone have thump sound during startup?
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Anyone have thump sound during startup?
On my redline performance, I notice a quick THUMP sound during startup when its been siting for several hours. I've only started it cold maybe 5 times, it has done it each time. It also only has 175 miles so I don't know if this is just a breaking thing, my black performance never did this but I broke it in over a 2 day period so this didn't apply.
No, its not kittens in the hood, I already checked!
No, its not kittens in the hood, I already checked!
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what kind of thump sound? was your car rolling when the sound came up?
I have a "grown" sound when my car rolls forward (rolling down the hill, since my house is in some sort of a slope) during startup.
I have a "grown" sound when my car rolls forward (rolling down the hill, since my house is in some sort of a slope) during startup.
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I heard this noise
When i first started her up, and i was in first gear going prob like 10 miles an hour if i quickly pushed in the clutch i hears a lound thump, i have not drive this car hard at all so i was getting really worried then it went away hasnt come back since ? i dunno
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same thing
I too have been having the thump on initial start-ups. It seems to be coming from the bottom area of the drivers side. From what you have explained, it sounds exactly the same. Not noticeable after the car has been warmed and started. Wonder what it is???.......Ricky 6spdTour
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I hear the thump as well in both of my Z's. One has 3k and the other 1k and both have done it since new. I figured it was normal since both of my Z's did it but it hasn't bothered me enough to go to the dealer and complain thus far but good to know that others hear it as well so I don't think I'm crazy.
Eddie
Eddie
#10
Ditto here - I only hear it after the car sits overnight. To me it sounded like it came from the driver's-side dash. At first I thought it was the stereo, but then it occurred when the stereo
was off. I will also check out the manual.
Nissan needs to warn us about strange bumps, thumps, and clunks that are normal & nothing to worry about.
Ever fly and wonder about the weird noises (flaps going up or down. etc.)? - always wished the stewardess or pilot would explain those noises. "No, it's not an engine falling off. Please get away from the emergency exit".
was off. I will also check out the manual.
Nissan needs to warn us about strange bumps, thumps, and clunks that are normal & nothing to worry about.
Ever fly and wonder about the weird noises (flaps going up or down. etc.)? - always wished the stewardess or pilot would explain those noises. "No, it's not an engine falling off. Please get away from the emergency exit".
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Originally posted by ztom
Nissan needs to warn us about strange bumps, thumps, and clunks that are normal & nothing to worry about.
Nissan needs to warn us about strange bumps, thumps, and clunks that are normal & nothing to worry about.
Page 5-21:
Self-test feature
The anti-lock brake system consists of electronic
sensors, electric pumps, and hydraulic solenoids
controlled by a computer. The computer has a
built-in diagnostic feature that tests the system
each time you start the engine and move the
vehicle at a low speed in forward or reverse.
When the self-test occurs, you may hear a clunk
Folks might want to read the thing. It really does have a few pieces of information about the Z that you should know about.
www.courtesyparts.com/350z/2003-Nissan-350Z.pdf
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The key point to that is it says "when you move the vehicle". The thread is talking about a clunk at start up. Every vehicle that has abs makes a noise that is not necessarily a clunk that comes from the drivers side. The clunk is not really bothering me but I do agree that it is very noticeable upon starting cold. That clunk that you hear with the abs per the manual is heard everytime the car is started and makes no difference with temperature. Just thought I'd point that out and Sage, I'm not taking a shot. It seems that a lot of bickering starts very easily in these threads and I don't want you to take it that way but a very good point made about the self test.
Happy Thanksgiving!!!
Eddie
Happy Thanksgiving!!!
Eddie
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I have the clunk too. Seems to be more prevalent with colder weather, but we haven't been having much. I'm going to try starting it in neutral now and see if I ever get the clunk again.
#16
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Damn, people. We're getting silly around here. That "thump" sound is the initial intake charge. That's all. Your cold engine is sucking cold air. Ever stick your hand in the intake when someone's revving the throttle? It's like a vacuum. Yes, it's that powerful.
Stop this thread NOW.
Stop this thread NOW.
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Aha!
Thanks for this thread. I have a Nissan Pathfinder, and have always had a "thunk" after I started it up and moved.
Now I know what it is, its the ABS!
The Pathfinder manual has the same in it
Now I know what it is, its the ABS!
The Pathfinder manual has the same in it
Self-test feature
The anti-lock brake system consists of electronic
sensors, electric pumps, and hydraulic
solenoids controlled by a computer. The computer
has a built-in diagnostic feature that tests
the system each time you start the engine and
move the vehicle at a low speed in forward or
reverse. When the self-test occurs, you may
hear a clunk noise and/or feel a pulsation in
the brake pedal. This is normal and is not an
indication of any malfunction. If the computer
senses any malfunction, it switches the antilock
brake system OFF and turns on the ABS
brake warning light in the dashboard. The
brake system will then behave normally, but
without anti-lock assistance.
The anti-lock brake system consists of electronic
sensors, electric pumps, and hydraulic
solenoids controlled by a computer. The computer
has a built-in diagnostic feature that tests
the system each time you start the engine and
move the vehicle at a low speed in forward or
reverse. When the self-test occurs, you may
hear a clunk noise and/or feel a pulsation in
the brake pedal. This is normal and is not an
indication of any malfunction. If the computer
senses any malfunction, it switches the antilock
brake system OFF and turns on the ABS
brake warning light in the dashboard. The
brake system will then behave normally, but
without anti-lock assistance.
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