Need advice on start up noise on 08 coupe.

[opekone_1988]

Good day mates, I know that this issue has been reported previously but I was wondering if anyone has any specifics that I should point out before I go to the dealer shop for repair. Symptoms: I get a weird clanking noise on cold start-ups and last like 30 seconds and then goes away, but only on cold start ups though. I've heard many theories from ECU problems, loose heat shield and dead hamster caught on belt..j/k.. seriously though, any input would be greatly appreciated.

[opekone_1988]

So am i the only one with the problem.. wow! i feel special.

[LinkNuc]

Sorry, we all get a click when we first start rolling but that is attributed to the ABS check, I'd get her looked at

[SHIFT_COUPE]

Is this what your experiencing?

-Engine Rattle Noise When Starting-

IF YOU CONFIRM When the engine is started after a "cold soak" of more than 4 hours; there is a rattle for 1-2 seconds, and the rattle is coming from the IVT (Intake Valve Timing) Sprocket at the front of the engine, ACTIONS Step A - Confirm this bulletin applies. Step B - Use CONSULT-II to reprogram the ECM. See this bulletin for further detail.

I'm experiencing this symptom as well. The text above is from a Technical Service Bulletin. Make an appointment and bring it in, I know I am.

[opekone_1988]

Thank you for the info, its a bit embarrasing considering its a new car but yes, those are the symptoms.

[BlackNWhite]

Good day mates, I know that this issue has been reported previously but I was wondering if anyone has any specifics that I should point out before I go to the dealer shop for repair. Symptoms: I get a weird clanking noise on cold start-ups and last like 30 seconds and then goes away, but only on cold start ups though. I've heard many theories from ECU problems, loose heat shield and dead hamster caught on belt..j/k.. seriously though, any input would be greatly appreciated.

If you're saying it LASTS 30 seconds... then it might be what I had. I had a loud ugly noise that sounded like metal grinding on metal and it lasted for 30 seconds. It was a broken heat shield bracket and everything was replaced and now it doesn't make that noise.

[SHIFT_2.5S]

If you're saying it LASTS 30 seconds... then it might be what I had. I had a loud ugly noise that sounded like metal grinding on metal and it lasted for 30 seconds. It was a broken heat shield bracket and everything was replaced and now it doesn't make that noise.

I think I might have this. I have some very loud noise upon starting the car (in Parking) but once I shift to Drive or Reverse, the noise goes away. Any idea on what this can be?

[opekone_1988]

Same here as last post, as soon as i shift to drive or reverse it goes away but as i'm starting up while on parking its this loud nasty noise and doubt that its normal, too loud to be ABS or any of that sort, but like i said' it last about half a minute and then goes away but only on cold starts so a loose heat shield doesnt make sense because i doubt the heat shield gets tighter as the car warms up... dunno' just my analysis. I just dont want to go back to th dealer and then they tell me that nothing is wrong when obviously there is.

[aahx489]

Hi LinkNuc,

I've been looking for something similar to what you explained. When i do a cold start, once i put the car in reverse or in drive, it seems after it does a full tire rotation or a little more, i here a popping noise coming from the front. This is the 4th time i heard this after a cold start. If i drive around and shut the car off and then turn it on and move, i dont here that pop. it sounds like something is loosening up because it was stuck or something.. you mentioned in this post that it may be because the ABS? Can you please give some more details and is this something that is covered under warranty or could be a potential disaster or big problem?

06 Altima SE 3.5 18800 miles - runs really smooth like it has CVT transmission

[generic808]

Hi LinkNuc,

I've been looking for something similar to what you explained. When i do a cold start, once i put the car in reverse or in drive, it seems after it does a full tire rotation or a little more, i here a popping noise coming from the front. This is the 4th time i heard this after a cold start. If i drive around and shut the car off and then turn it on and move, i dont here that pop. it sounds like something is loosening up because it was stuck or something.. you mentioned in this post that it may be because the ABS? Can you please give some more details and is this something that is covered under warranty or could be a potential disaster or big problem?

If it only happens once on a cold start, it's probably the ABS check. It'll usually occur within the first 15-20 feet of driving after a long sit. It feels like a clunk, right? That's normal.

The sound the guys are talking about in this thread is an entirely different thing. Yours sounds like it's just the ABS. All newer Nissan models equipped with ABS usually does this.

[aahx489]

generic808,

thanks for the post. I just got this car about 5 days ago and i was really getting worried.. it does make that sound within the first 15 or 20 feet moving, specially if i step on the gas a little but only one time like u mentioned.. but usually if it sits for a while. it does sound like a clunk or (I had a 95 chevy blazer and the AC Compressor was really loud.. when it first started it made a clunk sound blended with the sound of an air compressor shooting air.) Maybe the AC thing is a bad example but i think it was like that.. ado you know a similar post related to the question i had? i don't want to be posting this in a different type of post and im new to this site - ill let some of my friends from work about this site, they have infiniti g35's.. thanx again!!

[generic808]

You just got to do a search on engine noise or something similar. But, from what you have said, I'm 99.736% sure it's the ABS. The last 3 Nissan's I've owned did the exact same thing. No need to worry if it's that clunk sound only one time after a long sit.

[BlackNWhite]

Same here as last post, as soon as i shift to drive or reverse it goes away but as i'm starting up while on parking its this loud nasty noise and doubt that its normal, too loud to be ABS or any of that sort, but like i said' it last about half a minute and then goes away but only on cold starts so a loose heat shield doesnt make sense because i doubt the heat shield gets tighter as the car warms up... dunno' just my analysis. I just dont want to go back to th dealer and then they tell me that nothing is wrong when obviously there is.

Every time I took it to them they said nothing was wrong. So what I did was I left my car overnight so it could get a cold soak and I got there at 8 in the morning and had the service advisor bring over a tech and had them both listen to me turn the car on.

Suddenly... there was a problem with my car.

[generic808]

Every time I took it to them they said nothing was wrong. So what I did was I left my car overnight so it could get a cold soak and I got there at 8 in the morning and had the service advisor bring over a tech and had them both listen to me turn the car on.

Suddenly... there was a problem with my car.

So what was wrong? Did you find out yet?

[SHIFT_COUPE]

Yes, please keep us posted on what they do. I haven't brought mine down yet.

[BlackNWhite]

So what was wrong? Did you find out yet?

I already answered in my first post.

It was a broken heatshield bracket so they replaced the whole heat shield and I think the muffler too, "just to be safe". They had my car for about three days and they put me in a rental.

What I was saying was that I took it in a couple times before that for the same problem and by the time I drove over to the dealer my car was warmed up plenty enough that it wouldn't make that noise anymore even if you turned it off and turned it on again. It only did it if it sat over night or sitting all dat in the parking lot at work.

So... what I did was I took it and left it overnight one day after work and when I got there in the morning I had a tech and the service advisor listen to it at start-up. All of a sudden... NOW there was a problem with it.

[generic808]

I thought you were talking about something else that broke and you took it in again. DURR!!

[Shift_Perfection]

whatsup with nissan an d****ty heat shields.. mine broke too and i got it replaced. made such an uglyyyyy noise

[aahx489]

it seems that im getting the issue i was talking about early usually after i start the car.. even if it's not a cold start :/ I am going to go to the service office tomorrow to have this checked out.. hopefully all goes good. i think im going to post this in a new thread

[opekone_1988]

If you're saying it LASTS 30 seconds... then it might be what I had. I had a loud ugly noise that sounded like metal grinding on metal and it lasted for 30 seconds. It was a broken heat shield bracket and everything was replaced and now it doesn't make that noise.

My pardons.. you are absolutely right. This weekend I decided to check it out myself and opened up the hood and started the car, to my dismay the freaking Heat shield was rattling like crazy (You can clearly see it) and once the car cooled into a complete idle it stopped rattling. I turned off the car and once it cooled a bit I was able to check the heat shield with my hand it the thing was loose as hell. Didn't have time to tightened it but as BlackNWhite stated, if the bracket is broken then the dealer needs to replace it. Thanks for the info.

[BlackNWhite]

My pardons.. you are absolutely right. This weekend I decided to check it out myself and opened up the hood and started the car, to my dismay the freaking Heat shield was rattling like crazy (You can clearly see it) and once the car cooled into a complete idle it stopped rattling. I turned off the car and once it cooled a bit I was able to check the heat shield with my hand it the thing was loose as hell. Didn't have time to tightened it but as BlackNWhite stated, if the bracket is broken then the dealer needs to replace it. Thanks for the info.

Haha, glad I was of help.

That was the same thing I told the advisor when he told me that He said the metal expands as the car is hotter and that's why the noise goes away.

[SHIFT_2.5S]

Guess I need to take mine in as well...

Anyone know how long it takes the dealer to fix this? Also, will I need to leave it overnight to prove the problem to them from a cold start?

[SHIFT_2.5S]

I once again noticed the loud noise today on a cold start. However, if I shift from P to anything (reverse for instance), and then go back to Parking, the noise goes away? Is this the heat shield?

[opekone_1988]

I once again noticed the loud noise today on a cold start. However, if I shift from P to anything (reverse for instance), and then go back to Parking, the noise goes away? Is this the heat shield?

Yup, if you rev the engine a but it will go away or if you shift to anything else but P it will also go away. You can check it out by opening your hood, starting the car and look down the exhaust pipe in the front right in between the radiator and engine and you can clearly see the heat shield rattling. I’m gonna try fixing it myself this weekend along with installing HID's and Intake.. I'll let you know of the heatshield bracket is just loose or broken. If its broken then I’ll have to go to the dealer and get it replaced.

[SHIFT_2.5S]

Yup, if you rev the engine a but it will go away or if you shift to anything else but P it will also go away. You can check it out by opening your hood, starting the car and look down the exhaust pipe in the front right in between the radiator and engine and you can clearly see the heat shield rattling. I’m gonna try fixing it myself this weekend along with installing HID's and Intake.. I'll let you know of the heatshield bracket is just loose or broken. If its broken then I’ll have to go to the dealer and get it replaced.

Thanks for the heads up. Is it possible for me to tighten the heat shield myself, or do I have to take it in?

[SHIFT_2.5S]

I made sure to check this morning and it did once again make the unpleasant noise.

Much to my surprise, it was not the heat shield. Instead, the noise was coming from somewhere underneath the timing belt (left part of engine bay). Another surprise came when the noise stopped after about 10-15 seconds. I figured that if it were the heat shield, noise would last much longer (as many people have claimed). The head shield was not rattling.

[LegendRacer]

i paid 40grand for my altima, and the first 15feet of it moving, makes a friggen noise that even a civic wont make... i took my car to the dealer today, and had ****en so much arguments with teh manager of service. The guy literally kicked me out.

I know you shouldnt compare cars, because they say they ahve a totally different set up in the car.

but either way, im paying 40grand and a civic is 25, and they dont have noise? its not reasonable

and i find my transmission to be a lil stiff and rough, the mechanics just told me to drive it till 10 000 before making any replacements

also when i step on the gas you hear a wear sucking sound from the front, just the second you step it on, is it just hte engine taking in air?

[bradz]

I just found out the noise in my A/C. It was coming from the heat shield bracket. I just put some metal wire around the screws and tighten it and no more annoying noise. BLACKNWHITE was right. Here is the link for that F***** heat shield that keeps me worried for a long months...

Modified by bradz at 3:17 PM 11/10/2007

Modified by bradz at 3:18 PM 11/10/2007
Modified by bradz at 3:19 PM 11/10/2007

[SHIFT_2.5S]

I just found out the noise in my A/C. It was coming from the heat shield bracket. I just put some metal wire around the screws and tighten it and no more annoying noise. BLACKNWHITE was right. Here is the link for that F***** heat shield that keeps me worrying for a long months...

http://i15.photobucket.com/alb...7.jpg

The link doesn't work.

[opekone_1988]

Well as i was installing my 6000k HID's and Injen intake this saturday, I decided to see if I can tightened the heatshield myself, but no luck. Was able to tighted one but not the other two and this was with the front bumper off. So here I go now to the freakin dealer to fix something om my new car.