ChucksCL-S

..and you won't believe what fixed it. In D5 my auto CL-S at speeds over 50 mph would shudder and stumble, even after a new tranny, axles, front motor mount, wheel balancing, you name it I did it. These repairs came over a six month period, and I gave up for awhile and just used D4. In D4 it was perfect, or close to it. Two months ago the tranny went, so I thought that would finally fix it, but nope, still there. I was convinced it was the new (and old) torque converter, so I took it back to the local dealer, Tischer Acura. They too thought it was the TQ, but upon requesting a warrantee tranny replacement, Acura headquarters refused them. They told the techs to go for a ride in my car and record with their scan tool the shuddering for 30 seconds, and to then transmit the data to them. Result: intake plenum cover gasket was installed upside down. Nine long months ago I cleaned out the oil we all know about that collects in the intake, and although replacing the skinny gasket is simple enough I guess I messed up, and the car had EGR issues because of it. When I got home I could see that they had installed a new gasket and cleaned the entire intake and all those little holes out real well.
Car runs really well now, shudder completely gone, just wanted to share

Rajca

iTrader: (8)

congrats.

fsttyms1

chuck, chuck, chuck

Actually no that you say that i remember a few years back that happening to a few members on the TL side.

friesm2000

iTrader: (4)

naughty boy for sending the dealer on a goose egg hunt, but at least they found it, with it being caused by yourself

p.diddy

iTrader: (3)

Maybe that's what's causing my shudder.

phee

iTrader: (5)

Wow. Your dealer is awesome. I would send them a gift. Not many would have figured out that gasket issue

friesm2000

iTrader: (4)

ummm.. dealer did not completly find it themselves Acura/Honda engineers did by the fact that they were sent the scan tool data, if anybody should get a gift it should be the engineers

Tulanian

Congrats, that's the kind of issue that coulda made you give up on the car.

StonedCL

iTrader: (1)

That is pretty funny cuz I also cleaned out my IM not long B4 mine started to shudder.. You are talking about the metal gasket, correct?
I remember putting it in the correct way but I bent it by mistake..That might be my problem!!

p.diddy

iTrader: (3)

i think its the torque converter.

CL-S progression 01

iTrader: (2)

stoned CL just get the intake manifold gasket from P2R and only use that.

It will significantly lower manifold temperatures, and it will seal perfectly.

Rajca

iTrader: (8)

^yup. i got a drop of more than 50deg. between my runners and intake manifold spacer. i also had the hood popped up in the back so cooling helped a lot. but it will lower temps significantly

ChucksCL-S

Metal thin gasket yes. Not concentrating I put it on upside down or backwards, ugh All is well now

ChucksCL-S

Damn near did! But I've put too much into it now to let it go.

ChucksCL-S

Funny you say that I sent them a nice letter that basically said "Thanks". They know me now pretty well as I've been a customer there for ten years; two cars, parts and service now and then.

CL-S progression 01

iTrader: (2)

i guess you won't be rushing your work anymore?? lol