Losing power 3 - 5k

[Anonymous]

Hi

Have recently had the 60k service carried out on our 2000 MR2, all was ok, however in the past week it seems to have become quite sluggish.

At about 3k, there is an increase in engine noise (much more than normal) and the acceleration is very slow through the revs, sort of feels like it is holding back.  It gets there eventually but takes much longer than normal.

I popped it back to Inchcape yesterday and they changed the spark plugs and adjusted the air flow(?) but the technician said it hasn't fixed the problem.

Its due back on Thursday for a full check over - does anyone have any ideas what this could be?

There are no engine warning (or any warning) lights displayed, the idle seems ok, doesn't seem like its misfiring at all.

Thanks

Leon

[Tem]

does anyone have any ideas what this could be?

Check the precats. Now.

[Anonymous]

just out of interest, check they haven't overfilled it with oil at your service. I am suspicious that this may be the cause of my problems after experiencing similar symptoms after my last service

[aaronjb]

Check the precats. Now.

Exactly.

[kanujunkie]

and heres how

 m http://www.mr2roc.org/phpBB2/viewtopic.php?t=3507 m

[Anonymous]

just out of interest, check they haven't overfilled it with oil at your service. I am suspicious that this may be the cause of my problems after experiencing similar symptoms after my last service

Just got home and checked the oil level - it is above the guage and is sitting on the flexible bit - probably about .5 - 1cm above the F mark.

Could that be the problem, or is this more likely to be related to the precats?

Thanks all for your help.

[Anonymous]

Seriously sounds like precats. Please check em, if you can take photos and post em here

[Anonymous]

just out of interest, check they haven't overfilled it with oil at your service. I am suspicious that this may be the cause of my problems after experiencing similar symptoms after my last service

Just got home and checked the oil level - it is above the guage and is sitting on the flexible bit - probably about .5 - 1cm above the F mark.

Could that be the problem, or is this more likely to be related to the precats?

Thanks all for your help.

According to the manual "do not overfill as this may damage your engine" so get it back to them asap and complain

[Anonymous]

Seriously sounds like precats. Please check em, if you can take photos and post em here

I have seen the link explaining how to remove the pre-cats, is there an easier way to check them, or do i have to get the manifold off for that too ?

[philster_d]

do a search.

I think there is an easy visual inspection. maybe you look in the o2 socket or something.

Good luck,

Philster

[Anonymous]

just out of interest, check they haven't overfilled it with oil at your service. I am suspicious that this may be the cause of my problems after experiencing similar symptoms after my last service

Just got home and checked the oil level - it is above the guage and is sitting on the flexible bit - probably about .5 - 1cm above the F mark.

Could that be the problem, or is this more likely to be related to the precats?

Thanks all for your help.

According to the manual "do not overfill as this may damage your engine" so get it back to them asap and complain

Well, since my last service in November last year, my car had lost a little bit of power after it and over the few months, I did have to top up the oil quite a few times thereafter.

see this link:  m http://www.mr2roc.org/phpBB2/viewtopic.php?p=113877 m

now, 5 months down the line, I've been told the piston rings on my engine havent been sealing well with the cylinders causing oil usage and the eventual oil starvation to my bottom end.

This has led me to believe that the particular problems I have had have stemmed from mr T overfilling the car with oil at my service, causing the piston ring damage.

Sound feasible anybody??

[Anonymous]

just out of interest, check they haven't overfilled it with oil at your service. I am suspicious that this may be the cause of my problems after experiencing similar symptoms after my last service

Just got home and checked the oil level - it is above the guage and is sitting on the flexible bit - probably about .5 - 1cm above the F mark.

Could that be the problem, or is this more likely to be related to the precats?

Thanks all for your help.

According to the manual "do not overfill as this may damage your engine" so get it back to them asap and complain

Well, since my last service in November last year, my car had lost a little bit of power after it and over the few months, I did have to top up the oil quite a few times thereafter.

see this link:  m http://www.mr2roc.org/phpBB2/viewtopic.php?p=113877 m

now, 5 months down the line, I've been told the piston rings on my engine havent been sealing well with the cylinders causing oil usage and the eventual oil starvation to my bottom end.

This has led me to believe that the particular problems I have had have stemmed from mr T overfilling the car with oil at my service, causing the piston ring damage.

Sound feasible anybody??

The symtoms in your previous post sound much the same - i will see what Toyota say on Thursday when i take it back...

[Anonymous]

do a search.

I think there is an easy visual inspection. maybe you look in the o2 socket or something.

Good luck,

Philster

found this, but you really need to see both sides....

http://www.mr2roc.org/phpBB2/viewtopic.php?t=7647&highlight=precat+inspection

[Anonymous]

car is back at the dealer today - just heard that the MAIN cat has broken up inside the pipe which is causing my problems.  They are quoting about £850 (ouch!) including VAT and Fitting - does that sound about right?

Apparently the pre-cats are ok.....

thanks

leon

  s:cry: :cry: s:cry:

[markiii]

the main cat is I beleive metal

so I doubt that

I would interpret that as,

haven't got a clue what a precat is so will say it's ok,

found some material in the main cat so it's must have come from that

get them to allow you to look into teh manifold from underneath before they fit teh new main cat

[aaronjb]

car is back at the dealer today - just heard that the MAIN cat has broken up inside the pipe which is causing my problems.  They are quoting about £850 (ouch!) including VAT and Fitting - does that sound about right?

That's about right for main dealer prices (actually, that's cheap!) - you could see if you could find a secondhand one anywhere, will be much, much cheaper.  Just be aware that J-spec and Euro CATs are different in that Euro CATs have a third O2 sensor after the main cat, and J-Spec do not.

[Anonymous]

Cant believe it - have a wedding to pay for this month!   s:roll: :roll: s:roll:  

If the main cat has gone, will it cause any secondary damage, dont want to rush into saying yes to the £850 today but worried about driving it away....

[kanujunkie]

pm Adam (Jap GT300)

he may be able to help you, he's in kent but even if drive down then it should cost less than that

[markiii]

Cant believe it - have a wedding to pay for this month!   s:roll: :roll: s:roll:  

If the main cat has gone, will it cause any secondary damage, dont want to rush into saying yes to the £850 today but worried about driving it away....

I really don't beleive it's the main cat

[Tem]

the main cat is I beleive metal

so I doubt that

I would interpret that as,

haven't got a clue what a precat is so will say it's ok,

found some material in the main cat so it's must have come from that

get them to allow you to look into the manifold from underneath before they fit the new main cat

I thought it's ceramic as well...

Other than that, I think you're spot on. Like I already said, check the precats. Now. It's not a big thing to do, but it just might save a big bang from happening.

[aaronjb]

I really don't beleive it's the main cat

Fair point - especially if the main cat is metal.. having said that, it is possible to kill a metal main cat (the Mk2 turbo boys do it regularly, it seems  s;) s;) )

Of course, if the precats did disintegrate and end up in the main cat, you need a new main cat anyway..

[Anonymous]

the main cat is I beleive metal

so I doubt that

I would interpret that as,

haven't got a clue what a precat is so will say it's ok,

found some material in the main cat so it's must have come from that

get them to allow you to look into the manifold from underneath before they fit the new main cat

I thought it's ceramic as well...

Other than that, I think you're spot on. Like I already said, check the precats. Now. It's not a big thing to do, but it just might save a big bang from happening.

Will check the pre-cats tonight - just need to pick up an 02 socket.

I obtained a quote from breakeryard.com for a used main cat, they would want £79.00, if it transpired that it was the main cat - would most exhaust fitters be able to do the job fitting this second hand main cat?

[markiii]

check the precats from teh bottom to see if thats where teh material in teh main cat has come from, I assume it's still in bits?

[Anonymous]

check the precats from the bottom to see if thats where the material in the main cat has come from, I assume it's still in bits?

No, they cant get the part today, and i need to take the car with me, so have (are) re-assembling it.

[markiii]

if the main cat os blocked with anything at all you don't want to be driving it or bye bye engine