Engine Cough Under 2,000 Prm

[Bonathan]

hi

i have a 96 LS400.

i had car serviced by lexus in bristol & the discovered a broken EGR pipe.

Rather than pay £600 labour i had local garage fit it for less than half that.

but i felt afterwards the engine was a little rough (hardly perciptbile but just noticable).

also when using fast a roads or dual carriageways i think the engine coughed a couple of times. all around 2000 rpm, gave a feeling like going over a rough patch of road for a second.

the car seems to perform fine & cruises at motorway speeds fine & mpg is at 30.

anyhow i took car back to garage that did the work & they put on the bosch engine management system to test.

they think 2 of the lambda sensors are gone (1 front & 1 rear). (there are 4 on car).

i would have thought if a sensor had gone the engine management light would have come on. ?

if the sensors have gone is there anywhere cheaper than the £153 & £115 for sensors than lexus ? (front / rear) ?

i was planning on changing plugs and leads this weekend as i dont think this has ever been done on car.

any thoughts please on the sensor problem ??

thanks

Robin...

[maneesh]

not sure about 96 models, but I know on my 92 model it came up with a check engine light, and then there is a way to get diagnostic codes which you can then lookup in the manual or over the net.

do you know what the emissions are like? if the emissions at last MOT were a bit too high but still legal, that might indicate the sensors are a bit worn out?

I would recommend www.oxygensensors.com - I got original oxygen sensors for my 92 model from there. They are based in the US, but the prices are dirt cheap compared to UK prices.

Good Luck!

[Bonathan]

not sure about 96 models, but I know on my 92 model it came up with a check engine light, and then there is a way to get diagnostic codes which you can then lookup in the manual or over the net.

do you know what the emissions are like? if the emissions at last MOT were a bit too high but still legal, that might indicate the sensors are a bit worn out?

I would recommend www.oxygensensors.com - I got original oxygen sensors for my 92 model from there. They are based in the US, but the prices are dirt cheap compared to UK prices.

Good Luck!

←

looks good prices, but dont want to spend money if i dont have too.

thanks

Robin...