JapCarForum Car Manufacturers Lexus/Toyota IS200 / IS300 / SPORTCROSS / Altezza IS 200 MOT failure

IS 200 MOT failure

IS 200 MOT failure

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TommyH
Senior Member
499
04-06-2018, 07:39 AM
#11
Is the main slider top and the sub the bottom slider ?

MODS- Geomtry Done(WIM Settings) -Arm Rest -TRD Front skirt -18"Sport Alloy's(Thanks Widnes is200)- Lowered 40mm -Sports Grille(repositoned horns)- Hid's 6000k Dipped -Xenon 6500k Main- LED Tower Sidelights -LED boot light -36 LED Dome Light- Polished Stainless Gearknob- Chrome Tail Pipe -Stainless A/C Rings & Clock Panel - JDM dash tray -Clear Door Lenses with Blue LED's- 6" Altezza Aerial- TOM's Ram II Air Filter- Fog/Brake Conversion -Fan Washer Jets- Stainless Dials.
TommyH
04-06-2018, 07:39 AM #11

Is the main slider top and the sub the bottom slider ?


MODS- Geomtry Done(WIM Settings) -Arm Rest -TRD Front skirt -18"Sport Alloy's(Thanks Widnes is200)- Lowered 40mm -Sports Grille(repositoned horns)- Hid's 6000k Dipped -Xenon 6500k Main- LED Tower Sidelights -LED boot light -36 LED Dome Light- Polished Stainless Gearknob- Chrome Tail Pipe -Stainless A/C Rings & Clock Panel - JDM dash tray -Clear Door Lenses with Blue LED's- 6" Altezza Aerial- TOM's Ram II Air Filter- Fog/Brake Conversion -Fan Washer Jets- Stainless Dials.

toxo
Posting Freak
4,843
04-06-2018, 08:24 AM
#12
Don't use copperslip to lubricate brake sliders!! Lithium or silicone grease is what you want. Copperslip/grease eats rubber and your boots over your sliders will perish, then you'll be back at square one.

As said, once you're confident that your sliders and calipers are functioning as they should then get it checked out at Kwik Fit. It's highly unlikely but it could be something further up the chain (ABS proportioning valve?) but you're definitely going down the right path, getting the basics done first.

35% sounds like a lot but it's not the kind of thing you would notice unless you were really hammering it about all the time.
toxo
04-06-2018, 08:24 AM #12

Don't use copperslip to lubricate brake sliders!! Lithium or silicone grease is what you want. Copperslip/grease eats rubber and your boots over your sliders will perish, then you'll be back at square one.

As said, once you're confident that your sliders and calipers are functioning as they should then get it checked out at Kwik Fit. It's highly unlikely but it could be something further up the chain (ABS proportioning valve?) but you're definitely going down the right path, getting the basics done first.

35% sounds like a lot but it's not the kind of thing you would notice unless you were really hammering it about all the time.

rosey1955
Member
99
04-06-2018, 01:52 PM
#13
I returned to the testing station today in the hope that my clean up of the brakes had worked. A pass was not to be as the nearside had much better figures that the offside. The imbalance still sat in the mid 30's (%)
It looks as though i will have to go with a new caliper on the offside Sad
rosey1955
04-06-2018, 01:52 PM #13

I returned to the testing station today in the hope that my clean up of the brakes had worked. A pass was not to be as the nearside had much better figures that the offside. The imbalance still sat in the mid 30's (%)
It looks as though i will have to go with a new caliper on the offside Sad

toxo
Posting Freak
4,843
04-06-2018, 04:07 PM
#14
That's unfortunate but happens sometimes. Bear in mind the fault may not lie with your brake caliper, it could be something like a worn brake hose swelling to absorb the brake fluid pressure.

If you are going to replace the caliper rather than rebuilding it (which is a messy job and requires tools etc) then get a professionally refurbished caliper. I recently used http://www.brakesint.co.uk to replace the rear calipers on my car. They are like new without the Toyota/Lexus price, guaranteed, and their customer service is ace. You do have to pay a deposit though until you return your old caliper to them. You could easily order the part, rock up at the garage, get them to swap the calipers, and then send the old one back with just a couple of days turnaround.

Good luck :thumleft:
toxo
04-06-2018, 04:07 PM #14

That's unfortunate but happens sometimes. Bear in mind the fault may not lie with your brake caliper, it could be something like a worn brake hose swelling to absorb the brake fluid pressure.

If you are going to replace the caliper rather than rebuilding it (which is a messy job and requires tools etc) then get a professionally refurbished caliper. I recently used http://www.brakesint.co.uk to replace the rear calipers on my car. They are like new without the Toyota/Lexus price, guaranteed, and their customer service is ace. You do have to pay a deposit though until you return your old caliper to them. You could easily order the part, rock up at the garage, get them to swap the calipers, and then send the old one back with just a couple of days turnaround.

Good luck :thumleft:

rosey1955
Member
99
08-06-2018, 08:03 PM
#15
I have striped down the o/s calliper and found what I believe to be the problem.....The lower piston was barely moving, and was certainly not operating as well as the upper piston. Took it apart and found rust all around the inner ring of the piston housing. The piston itself was virtually untouched. I cleaned the inner ring and put the piston back in using some Mintex Cara Tec as lubricant. Pumped the pedal a few times, and removed the calliper....everything is now working properly. Time to get the IS200 booked back in for her MOT re test:closedeyes: Fingers X'd !!!!
rosey1955
08-06-2018, 08:03 PM #15

I have striped down the o/s calliper and found what I believe to be the problem.....The lower piston was barely moving, and was certainly not operating as well as the upper piston. Took it apart and found rust all around the inner ring of the piston housing. The piston itself was virtually untouched. I cleaned the inner ring and put the piston back in using some Mintex Cara Tec as lubricant. Pumped the pedal a few times, and removed the calliper....everything is now working properly. Time to get the IS200 booked back in for her MOT re test:closedeyes: Fingers X'd !!!!

toxo
Posting Freak
4,843
09-06-2018, 05:32 AM
#16
Was it missing a dust boot in order to get to that state? There should be a rubber seal quite high up the piston to stop **** getting into the chamber, sounds like that's not there.

Good find though, sometimes it can take days to pinpoint brake problems!
toxo
09-06-2018, 05:32 AM #16

Was it missing a dust boot in order to get to that state? There should be a rubber seal quite high up the piston to stop **** getting into the chamber, sounds like that's not there.

Good find though, sometimes it can take days to pinpoint brake problems!

rosey1955
Member
99
09-06-2018, 11:45 AM
#17
Everything was in place, no rubbers missing, just a little rust round the inner caliper housing. Anyway to cut a long story short the re-test result was exactly the same....(what a waste of my time trying to make good the old one:madSmile

The N/S provided a reading of about 187, whilst the older repaired caliper came up at anout 130, leaving a massive imbalance. I have now ordered a replacement caliper from the same company whom I bought the N/S one from in Oct' 09'. I will scream if it doesn't work this time........:ohmy:
rosey1955
09-06-2018, 11:45 AM #17

Everything was in place, no rubbers missing, just a little rust round the inner caliper housing. Anyway to cut a long story short the re-test result was exactly the same....(what a waste of my time trying to make good the old one:madSmile

The N/S provided a reading of about 187, whilst the older repaired caliper came up at anout 130, leaving a massive imbalance. I have now ordered a replacement caliper from the same company whom I bought the N/S one from in Oct' 09'. I will scream if it doesn't work this time........:ohmy:

ormi
Posting Freak
3,006
09-06-2018, 12:33 PM
#18
the imbalance isnt mesured by the final figure ie 187,130 its mesured when both brakes are being applyed.....
so if your brakes go up till 130 even and they lock out at 130 and the imbalance is up too 25% your brakes should pass regardless of the single reading if you know what i mean.......
but to change the note a bit 187 is pretty low a yaris will do 220!!!!!
my cars brakes top out at 301 on the front and 175 on the rear....

[Image: ormiedit1-2.jpg]
TTE supercharger,pr0lex manifold,hks fcd,larger intercooler,apexi induction kit,silicone hose kit,IK22's,polished engine parts,TTE front bumper mod'd for intercooler,TRD side skirts,TRD rear lip,JDM headlights and fogs,10k hid headlights 8k full beam,L8XSS p/plate,fog/brake/light conversion,18"fox rs's,lowered 90mm(f)100mm®,moleys under bars,yellow trd anti rollbars,full stainless exhaust,carbon fiber intake plus so much more
ormi
09-06-2018, 12:33 PM #18

the imbalance isnt mesured by the final figure ie 187,130 its mesured when both brakes are being applyed.....
so if your brakes go up till 130 even and they lock out at 130 and the imbalance is up too 25% your brakes should pass regardless of the single reading if you know what i mean.......
but to change the note a bit 187 is pretty low a yaris will do 220!!!!!
my cars brakes top out at 301 on the front and 175 on the rear....


[Image: ormiedit1-2.jpg]
TTE supercharger,pr0lex manifold,hks fcd,larger intercooler,apexi induction kit,silicone hose kit,IK22's,polished engine parts,TTE front bumper mod'd for intercooler,TRD side skirts,TRD rear lip,JDM headlights and fogs,10k hid headlights 8k full beam,L8XSS p/plate,fog/brake/light conversion,18"fox rs's,lowered 90mm(f)100mm®,moleys under bars,yellow trd anti rollbars,full stainless exhaust,carbon fiber intake plus so much more

ormi
Posting Freak
3,006
10-06-2018, 09:29 AM
#19
Just performed a brake test on an aygo and the readings for the front brakes were 216 and 220!!!think you need to get the whole system checked.

[Image: ormiedit1-2.jpg]
TTE supercharger,pr0lex manifold,hks fcd,larger intercooler,apexi induction kit,silicone hose kit,IK22's,polished engine parts,TTE front bumper mod'd for intercooler,TRD side skirts,TRD rear lip,JDM headlights and fogs,10k hid headlights 8k full beam,L8XSS p/plate,fog/brake/light conversion,18"fox rs's,lowered 90mm(f)100mm®,moleys under bars,yellow trd anti rollbars,full stainless exhaust,carbon fiber intake plus so much more
ormi
10-06-2018, 09:29 AM #19

Just performed a brake test on an aygo and the readings for the front brakes were 216 and 220!!!think you need to get the whole system checked.


[Image: ormiedit1-2.jpg]
TTE supercharger,pr0lex manifold,hks fcd,larger intercooler,apexi induction kit,silicone hose kit,IK22's,polished engine parts,TTE front bumper mod'd for intercooler,TRD side skirts,TRD rear lip,JDM headlights and fogs,10k hid headlights 8k full beam,L8XSS p/plate,fog/brake/light conversion,18"fox rs's,lowered 90mm(f)100mm®,moleys under bars,yellow trd anti rollbars,full stainless exhaust,carbon fiber intake plus so much more

rosey1955
Member
99
11-06-2018, 01:45 PM
#20
Ended up buying a new caliper as the pistons in the new unit which I bought in Oct 09 were a different size to the old unit (o/s) I bought the same type/make and took it for a re-test. Both sides registered well into the 220 mark

That will teach me not to purchase both in the first placeBlush

The newer pistons in both units are now identical , where as previously the N/S were ****** than the old unit. Also gave the system a thorough bleed. Sorted!:biggrin:
rosey1955
11-06-2018, 01:45 PM #20

Ended up buying a new caliper as the pistons in the new unit which I bought in Oct 09 were a different size to the old unit (o/s) I bought the same type/make and took it for a re-test. Both sides registered well into the 220 mark

That will teach me not to purchase both in the first placeBlush

The newer pistons in both units are now identical , where as previously the N/S were ****** than the old unit. Also gave the system a thorough bleed. Sorted!:biggrin:

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