Egr System Malfunction

racerhoze · March 11, 2004

My brothers lexus threw a error code 71 which is an "EGR system malfunction" which is only for california vehicles I thought.... does this mean there is something wrong with the car?... or is it nothing to worry about. BTW he has a '90 ls400 with 160K... is there something to reset the light?

SKperformance · March 11, 2004

You have an egr.Search for older posts which show poictures of them as it is needed to be removed to acess the starter. You need to get it fixed.

VBdenny · March 11, 2004

Depending on in which position to EGR valve is stuck, you may or may not experience a noticable problem. The EGR is part of the emissions system which means if you live somewhere that they check emissions, you probably won't pass. I don't think it is that expensive. I had the Chevy dealer replace the EGR valve on my Caprice and it cost about $250. Double that for a Lexus probably if you have them fix it.

racerhoze · March 12, 2004

I ran a search, and it LOOKS like something that requires a lot of disassembly of the engine, but maybe I am looking at it the wrong way, I am just wondering if it is something I can fix myself at all.

racerhoze · March 13, 2004

ANYONE here looked at an egr valve in their own garage?

racerhoze · March 13, 2004

anyone?

VBdenny · March 13, 2004

I know from reading previous posts that there is a plastic EGR tube that runs behind the intake manifold. Several people mentioned about how fragile it is. Perhaps your problem is that the tube is cracked. Any deviation from set parameters will activite the service engine code. I am sure there are posts on this in the gallery which show exactly where to look.

Hope this helps some.

Denny