Page 2 of 3 < 1 2 3 >
Topic Options
#2230829 - 01/09/17 12:03 PM Re: 99 V10 engine noise...Bad cats?? [Re: dodgedon]
sixpackbee Offline
master

Registered: 11/02/03
Posts: 2978
Loc: Western New York
Mine makes the exact same noise. Been doing for years.

Top
#2233936 - 01/14/17 07:37 AM Re: 99 V10 engine noise...Bad cats?? [Re: dodgedon]
redraptor Offline
master

Registered: 11/11/08
Posts: 4860
Loc: Greenville, PA
Originally Posted By dodgedon
I would guess that a dealer would have to plug into the truck to "see" what the timing is doing while running?

I was fortunate this independent guy had good equipment, but even then he took it to another shop to confirm it.
_________________________
Just another lesson learned....

Top
#2429477 - 01/05/18 12:57 PM Re: 99 V10 engine noise...Bad cats?? [Re: dodgedon]
dodgedon Offline
mopar

Registered: 10/20/11
Posts: 448
Loc: ND
Just wanted to give an update... This summer I had a dealer listen to the truck. He said the timing looked good. He was able to shut off an injector in each cylinder one at a time. He could produce the rattle noise on #2 and #9. He said he thought it was the flex plate rattling. Said it must be cracked...

Any thoughts on this?
_________________________
67 Charger 383 auto
75 Dodge CNT 800 CAT Diesel
85 W350 Crew Cab 360 Auto

Top
#2429685 - 01/05/18 08:33 PM Re: 99 V10 engine noise...Bad cats?? [Re: dodgedon]
buildanother Offline
I Live Here

Registered: 08/30/05
Posts: 11175
Loc: chicagoland,usa
How about possibly a timing chain rattling? Although they usually can rattle at idle, but being a 10 cyl, maybe they are in their own orbit on symptoms?

Top
#2429919 - 01/06/18 11:09 AM Re: 99 V10 engine noise...Bad cats?? [Re: buildanother]
dodgedon Offline
mopar

Registered: 10/20/11
Posts: 448
Loc: ND
The tech never said anything about the timing chains on these engines. He didn't believe anything was wrong inside the engine. We both listened to the rattle and It does sound like its coming from the rear... I guess my question is how can i know for sure it is the flex plate? I took the cover off and cant see any cracks. He said it would crack around the crank bolts, And you cant see them from the bottom.

If I took the torque converter bolts out and pushed it back, could I run the engine to see if the noise is gone? Is there enough clearance for that?
_________________________
67 Charger 383 auto
75 Dodge CNT 800 CAT Diesel
85 W350 Crew Cab 360 Auto

Top
#2430396 - 01/07/18 06:19 AM Re: 99 V10 engine noise...Bad cats?? [Re: dodgedon]
Guitar Jones Offline
master

Registered: 12/18/09
Posts: 9824
Loc: in a cattle trailer down by th...
Pull the trans. If you were to run the engine disconnected from the torque converter you will gall the pilot hole in the crank and the converter hub and without any load on the flex plate it may not make any noise.
_________________________
The Scamp is sold, now just two old trucks.
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc conversion. Hydroboost coming soon
'74 W200 Crew Cab 360, NP435, D44, D60 and NP205 divorced transfer case. Magnum 5.2 MPI and NV4500 coming soon.

Top
#2430436 - 01/07/18 09:44 AM Re: 99 V10 engine noise...Bad cats?? [Re: Guitar Jones]
dodgedon Offline
mopar

Registered: 10/20/11
Posts: 448
Loc: ND
Thank you, I figured there wouldn't be enough clearance. That's a lot of work to pull it back just to look but I don't have any other options do I? Being able to run it without load on the plate was the reason I wanted to try that.

If it is the flex plate the next problem is they are discontinued.... Is there any aftermarket options, or am i looking for a used one?
_________________________
67 Charger 383 auto
75 Dodge CNT 800 CAT Diesel
85 W350 Crew Cab 360 Auto

Top
#2430481 - 01/07/18 10:55 AM Re: 99 V10 engine noise...Bad cats?? [Re: dodgedon]
Guitar Jones Offline
master

Registered: 12/18/09
Posts: 9824
Loc: in a cattle trailer down by th...
Try a google search you can probably find one on ebay.
_________________________
The Scamp is sold, now just two old trucks.
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc conversion. Hydroboost coming soon
'74 W200 Crew Cab 360, NP435, D44, D60 and NP205 divorced transfer case. Magnum 5.2 MPI and NV4500 coming soon.

Top
#2431084 - 01/08/18 12:22 PM Re: 99 V10 engine noise...Bad cats?? [Re: Guitar Jones]
6PKRTSE Offline
master

Registered: 01/29/04
Posts: 3407
Loc: Motor City
My 96 V10 Ram has 168,000 on it now, the cats have been rattling for years. I just turn the radio up louder. LOL. One of these days I will just delete them. They do not seem to effect power or performance thus far.
_________________________
1970 Charger R/T S.E. 440 Six Pack
1970 CHALLENGER R/T, 25.5 Cert, Big Inch Alum 16 plug HEMI twin turbo.
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner.
1996 2500 RAM 488 V-10 4X4.
2012 Challenger R/T Classic.

Top
#2431120 - 01/08/18 01:13 PM Re: 99 V10 engine noise...Bad cats?? [Re: 6PKRTSE]
d-150 Offline
super stock

Registered: 01/06/10
Posts: 740
Loc: st.cloud fl
Get rid of the cats.probem solved

Top
#2431131 - 01/08/18 01:33 PM Re: 99 V10 engine noise...Bad cats?? [Re: d-150]
dodgedon Offline
mopar

Registered: 10/20/11
Posts: 448
Loc: ND
IF you read this post from the beginning you will see that I did fix the exhaust. That was not the problem. A tech said he thinks its the flex plate. I'm looking for thoughts on this... As in are these flex plates know to crack? How Can I know for sure with out pulling back the trans? This truck only has 80,000 miles.
_________________________
67 Charger 383 auto
75 Dodge CNT 800 CAT Diesel
85 W350 Crew Cab 360 Auto

Top
#2431163 - 01/08/18 02:49 PM Re: 99 V10 engine noise...Bad cats?? [Re: dodgedon]
d-150 Offline
super stock

Registered: 01/06/10
Posts: 740
Loc: st.cloud fl
Ok get it running .get under there with a piece of hose stick it to your ear.that should pinpoint your noise

Top
#2431184 - 01/08/18 03:48 PM Re: 99 V10 engine noise...Bad cats?? [Re: dodgedon]
SNK-EYZ Offline
master

Registered: 01/30/07
Posts: 8071
Loc: Lost in Space
IIRC you should be able to see a fair amount of the flexplate with the dust shield off the lower bellhousing.

Do a visual inspection and then do another check with it running to see if you can isolate the noise to the bellhousing area. twocents
_________________________
Kayse can't keep up at all now. lol

Top
#2431328 - 01/08/18 07:55 PM Re: 99 V10 engine noise...Bad cats?? [Re: SNK-EYZ]
dodgedon Offline
mopar

Registered: 10/20/11
Posts: 448
Loc: ND
I did do that earlier today. I had the cover off and ran it. It looks good but you can't see the center where the crank bolts are. I will admit its very loud with the cover off on start up, then the noise goes away.... I'm in the process of pulling the trans back. I will report what I find.
_________________________
67 Charger 383 auto
75 Dodge CNT 800 CAT Diesel
85 W350 Crew Cab 360 Auto

Top
#2433770 - 01/13/18 01:48 AM Re: 99 V10 engine noise...Bad cats?? [Re: dodgedon]
dodgedon Offline
mopar

Registered: 10/20/11
Posts: 448
Loc: ND
Its not the flex plate. I think I found the problem though. I pulled the pan off and the rod bearings seem too loose... I will investigate more when I have time. Didn't expect that as it has really good oil pressure.
_________________________
67 Charger 383 auto
75 Dodge CNT 800 CAT Diesel
85 W350 Crew Cab 360 Auto

Top
#2433928 - 01/13/18 12:15 PM Re: 99 V10 engine noise...Bad cats?? [Re: dodgedon]
440_Offroader Offline
member

Registered: 12/06/12
Posts: 71
Loc: Alberta
I thought it odd, that a tech would think it was a flex plate when the noise went away when dropping #2 or #9 cylinder. Wouldn't a flexplate make noise all the time the engine is running? I would investigate these 2 cylinders. Possibly loose bearing (like you suspect), wrist pin, or piston-cylinder clearances.

Top
#2434231 - 01/13/18 11:07 PM Re: 99 V10 engine noise...Bad cats?? [Re: 440_Offroader]
dodgedon Offline
mopar

Registered: 10/20/11
Posts: 448
Loc: ND
It was actually just the opposite. No engine noise when at idle. He would shut off the cylinder and it would rattle. Turn it back on and the noise would stop. I did ask about wrist pins that day and he did agree that yes when an engine would come in knocking as they turned off the cylinder it would go away. He thought the engine just ran to smooth to be internal. He felt that as they turned off the cylinder the missing was shaking the crank and the possibly cracked flex plate.

I have been trying to figure out this rattle for like 4 years. I have asked here, other dealers and shops, everyone said it was exhaust rattling, nothing or normal sounds.. I drive trucks every day and just never believed this was normal "sounds". Never wanted to just start taking everything apart without knowing for sure what was wrong.
_________________________
67 Charger 383 auto
75 Dodge CNT 800 CAT Diesel
85 W350 Crew Cab 360 Auto

Top
#2434725 - 01/14/18 08:52 PM Re: 99 V10 engine noise...Bad cats?? [Re: dodgedon]
chargers777 Offline
mopar

Registered: 09/14/03
Posts: 657
Loc: Nashport, OH
Have you checked your timing chain.I have the same problem and my chain is very loose at 85,000 miles.Had a gold star Chrysler mechanic with viper training check it and back me up on it.He says they used a poor quality chain from the factory without a tensioner.You can see it with the oil pan off.

Top
#2434853 - 01/15/18 02:02 AM Re: 99 V10 engine noise...Bad cats?? [Re: chargers777]
dodgedon Offline
mopar

Registered: 10/20/11
Posts: 448
Loc: ND
I will look at it more this week. I didn't look to closely at the chain but I did see it when looking up from the bottom. Didn't notice anything unusual about it. But now is the time to be sure when its all apart.
_________________________
67 Charger 383 auto
75 Dodge CNT 800 CAT Diesel
85 W350 Crew Cab 360 Auto

Top
#2440646 - 01/25/18 02:28 PM Re: 99 V10 engine noise...Bad cats?? [Re: dodgedon]
chargers777 Offline
mopar

Registered: 09/14/03
Posts: 657
Loc: Nashport, OH
Did you check the timing chain.I think the spec is 1/8 inch slop

Top
Page 2 of 3 < 1 2 3 >

Advertisement
Forum Stats
25,437 Registered Members
32 Forums
192,009 Topics
2,240,025 Posts

Most users ever online: 1,424 @ 06/20/18 07:18 PM
Moparts Newest Topics
Mopar Performance XHD Leaf spring clamp position?
by rarefish
08/21/18 11:49 AM
68 D100 Uteline bed vs 72 stepside bed
by Triggerfish
08/21/18 10:58 AM
Save Up To $250 With Classic Dash And Autometer Now
by Rustymuscle
08/21/18 10:42 AM
D400 - Should I convert from Manual to Auto?
by Truck Y'all !
08/21/18 10:29 AM