94 Lex Gs3, Engine Light, Egr Valve Not Sensing Exhaust Temp

[peterdfowler]

Running rough, now using twice the petro it use to and just started smoking.

Finally ordered the EGR valve w/ sensor.

Will this fix my problem or is there something more happening here?

Thank You In Advance, Pete

[steve2006]

Did you pull the engine codes 1st to confirm it was the EGR causing the problem or have you just guessed?

[peterdfowler]

Did you pull the engine codes 1st to confirm it was the EGR causing the problem or have you just guessed?

Yes, i did pay to have the code read and that is what i was told.

EGR sensor is not reading, not sure exactly but that is the jest of it, ty again.

So my question is could that cause my Lex to smoke??

[steve2006]

Could well do, albeit diesel the EGR failed on my Citroen Belingo, it had very little power and there was plumes of white smoke coming out the exhaust

[peterdfowler]

I am hoping that this will solve the problem.

My "Lex" was running poorly before the check engine light came on and took it to the mechanic, who said "something is holding the engine back".

The car just didn't seem to be firing on all cylinders.

Then when the light came on and I paid for the diagnostic, the same mechanic said that this maybe the answer to the other problem as well.

It was a huge error on my part to get it fixed right there, but felt it was no big deal at the time.

Trust me $1500 (1200 plus parts) later after a miss diagnosis of the top end and now having this done is a big deal to me.

For those interested, the EGR Valve is in the back right side of the engine, when facing the engine with the hood up.

Thank You Again All You Lexus Techs, Pete Fowler

P.S. This site rocks!!! and I will return after I get this job done to inform you all about the outcome:)

[peterdfowler]

Well, to my disappointment, replacing the EGR valve and the sending unit did not help my situation.

The exhaust has a strong gasoline odor, & the car shakes at idle.

Anyone with any ideas would be greatly appreciated.

TY, Pete

[radioshuk]

Well, to my disappointment, replacing the EGR valve and the sending unit did not help my situation.

The exhaust has a strong gasoline odor, & the car shakes at idle.

Anyone with any ideas would be greatly appreciated.

TY, Pete

I have 96 Gs300 and i found i had same problem( running like it was missing) but only after she had warmed up

Took it to my yard put the lights out and revved her up

found that the leads were arcing so ordered leads but it'd be worth a shot least it wont cost ya anything

[TigerFish]

Also worth looking at water down the plug wells.

Checking plugs/leads can be a bit of a pain as the throttle body has to come off to get to one of them properly.

[radioshuk]

yeah its a bit of a pain but if you can do all the basic checks yourself it then tells you what it isn't least you rule that out

before the expense starts again