Clunk right after startup

ucf_motorcycle · 08-29-2006, 05:58 PM

My titan makes a clunk sound about 1-2 seconds after a cold startup. It sounds similar to shifting a motorcycle out of neutral.

No other noises are heard when shifting or any thing.

The truck makes this noise while it is sitting in park. (no shifting)

Any ideas what this is and is it normal or should I be concerned?

**Blackbeauty** · 08-29-2006, 06:02 PM

Can you isolate the clunk? Is it from under the hood? Dash? Rear seats? Under your feet? Mine is clunky when I'm parked on a slight incline and shift from park to R or D, but not while standing still. Personally, I would be concerned. Does it do it EVERY time? In other words, if you took it to a dealer, would it duplicate itself for them?

BKW · 08-29-2006, 06:06 PM

Three Titans...three clunks...back out of sloping driveway, head down the hill....after 30 feet or so...CLUNK...at right front end.

The 04 SE KC did it, the 05 LE CC did it, and the 06 SE CC is doing it..

I looked..asphalt isn't torn up, no manhole cover....and the Murano doesn't do it...must be a ghosn in the machine.

**Blackbeauty** · 08-29-2006, 06:08 PM

BKW, yours sounds like a bushing, or on the outside chance a balljoint (not likely). But standing still? I don't know about that one.

BKW · 08-29-2006, 06:10 PM

Quote:

Originally Posted by Blackbeauty

BKW, yours sounds like a bushing, or on the outside chance a balljoint (not likely). But standing still? I don't know about that one.

Noise has occured on 3 different Titans...must be the slope of the street, otherwise I haven't a klew....

Yellomantis · 08-29-2006, 06:13 PM

Quote:

Originally Posted by ucf_motorcycle

My titan makes a clunk sound about 1-2 seconds after a cold startup. It sounds similar to shifting a motorcycle out of neutral.

No other noises are heard when shifting or any thing.

The truck makes this noise while it is sitting in park. (no shifting)

Any ideas what this is and is it normal or should I be concerned?

Is your A/C or defroster on when you start the truck? It could be the condenser engaging.

**Blackbeauty** · 08-29-2006, 06:13 PM

Could be the weight of the vehicle on the angled road causes the "unsettlement". I get it sometimes on my left front corner, but it's not consistent. It only does it certain places. I would bet it's a bushing. New poly bushings to replace the rubber ones might do the trick.

BKW · 08-29-2006, 06:14 PM

BTW...whenever you park on a slope, apply parking brake FIRST before putting gearshift in park, otherwise that clunk you hear may be your parking pawl going south.

**Blackbeauty** · 08-29-2006, 06:17 PM

I do that all the time. Still does it. Not as badly, but still does it. I need to adjust my parking brake now as I've noticed it goes further down without the tight engagement it used to have. [<<<Things about Titans that sound dirty, but aren't]

BKW · 08-29-2006, 06:17 PM

Quote:

Originally Posted by Blackbeauty

Could be the weight of the vehicle on the angled road causes the "unsettlement". I get it sometimes on my left front corner, but it's not consistent. It only does it certain places. I would bet it's a bushing. New poly bushings to replace the rubber ones might do the trick.

Can't be a bushing (unless all three trucks have defective ones)...all three trucks were/are low mileage, and overpampered...it's gotta be the street. Current Titan bought 12/29/05, just turned 2400 miles.

ucf_motorcycle · 08-29-2006, 06:22 PM

A/C is always on so it may be the condenser engaging like Yellomantis stated. I'll try starting it tommorow with the A/C off.

If it is infact the AC is the clunk normal? It sounds harsh.

Yellomantis · 08-29-2006, 06:23 PM

it is normal, you just have good ears. Mine does it all the time.

ucf_motorcycle · 08-29-2006, 06:33 PM

Quote:

Originally Posted by Blackbeauty

Can you isolate the clunk? Is it from under the hood? Dash? Rear seats? Under your feet? Mine is clunky when I'm parked on a slight incline and shift from park to R or D, but not while standing still. Personally, I would be concerned. Does it do it EVERY time? In other words, if you took it to a dealer, would it duplicate itself for them?

The sound is def not from the interior. It is under the hood or in the drivetrain somewhere. I really only notice it if I turn the truck over before i shut the door. It sounds like the truck is being shifted but its not and it doesn't lurch or anything.

I guess no one else has noticed this problem. HMM. I will probably try to isolate it then.

Yellomantis · 08-29-2006, 06:35 PM

Is the truck warm or cold when this happens? If the truck is warm it might also be the fan clutch engaging.

**Blackbeauty** · 08-29-2006, 06:51 PM

He said it only does it on a cold start up. I'm going to have to listen for this.