hi just joined the forum have a few issues i drive a volvos60 t5 2001 had etm clean and software update diagnostics all ok replaced maf sensor done service oil,oil filter and air filter, got a stainless steel custom exhaust fitted (long story haha) anyway when driving and slowing down as the revs drop to 1500 rpm theres a slight serge forward volvo say they cant find what it is so im puzzled anyone help
thanks roy

 

All transmission software up to date?

 

hi sorry its a manual aswell

 

Oh ok I know on alot of the manual cars they will surge like that. It is pretty much a normal condition.

 

hi didnt do this when i first got the car to my knowledge or maybe its got worse it just doesnt seem very smooth now at low revs , will this be anything to do with the exhaust as im a bit worried

 

It is possible.
Last tune up?

 

wot u mean last tune up

 

When was your last tune up? Spark plugs ETC

 

hi again, think it was april 2008 had spark plugs,oil and oil filter mobile 1 fully synthetic
thanks roy

 

when was the last time you had the trans flushed?
How many miles have you driven since the tune ~ roughly.

 

I doubt that is the problem. It might be the exhaust the back pressure might be slightly off causing the problem.

Since it is a manual transmission I would rule that out.

 

hi havent had the transmission fluid done what fluid and ware to get it will get it done
got car at 98,000 car now done 103,000 so 5,000 miles since last one ,never thought about the trans ffluid
how can i find out if its the exhaust

 

Like I stated above I wouldn't look at the tranny since it is a manual tranny. But you can change the fluid if you want.

As for the exhaust you only said it is stainless steal. But what about mufflers and cat all OEM or aftermarket parts?

 

hi the ss exhaust is cat back the mufflers are the ones that there company makes its a custom made exhaust
please tell me its not the exhaust

 

I only suggested the trans flush because I thought that manual trans like fresh fuild once in a while...well more often than autos.

edgey99: You have a turbo(T5)...so the exhaust should be a free-flowing muffler design like a magna flow...call up the guys that made the muffler and see if theirs is a free-flowing design or if it isa baffled design like a flowmasters. If it is a baffled design...take it back and tell them you need a free flow design, since your turbo'd.

 

hi again thanks for the reply i will do what you've said hope it all ok
how can i check to see if the mufflers are free flowing or baffled ,what would happen if they used mufflers on my car ,already had issues with this exhaust as it was of poor quality ie the welding so had this redone.
this was the first attempthttp://s510.photobucket.com/albums/s350/concalmum2/
this was the job they redone http://s510.photobucket.com/albums/s...2/exhaust%202/

 

Hopefully they can just tell you.

 

how can i find out for my self is there anyway of knowing

 

You should be able to take a flexable tooland stick it through the whole muffler.. make sure it is long enough to go through your tip and the muffler.
If you interfer with a wall like on the flowmaster design, then you have the wrong muffler. Not sure if this will be a 100% accurate way to test.
Like this:


Straight through design (Like dynomax or magnaflow)


Baffled design (like Flow Masters)

Good luck.

 

You should also undo the bolts to the center muffler (resinator) and check that one aswell.