If the '93 still has a timing belt, I'd suggest changing it.
My '89 Escort timing belt broke at a fairly consistent 55,000 miles (Ford says change it at 60K).
OTOH my '89 Corolla Wagon will go 70K on a timing belt, no sweat....
My '89 Escort had to have the transmission rebuilt three times in 180,000 miles.....
If you're the kind of dad who lets his kids drive his Lexus...........would you care to adopt me?
Thanks for the words of encouragement! I guess I need to spend some time under the hood :-(
I guess I'll have to check it out if I ever have a problem with carbon buildup somewhere. I clean throttle bodies with carb cleaner and a paper towel, it has worked well up to now.
Sorry, 4 is my limit. My daughter is the cleverest at getting the Lexus - she waits until the other cars are all gone or she says she needs the nav to figure out where she is going.
No, the 4cyl DOES NOT have a EGR lift sensor. It uses the less reliable MAP vacuum drop and doesn't always catch low flows. Looks like you got lucky!
The carbon will blow out the exhuast pipe. As for intake it may be a small buildup in the small egr hole on the side of the manifold shouldn't be a problem.
Today I removed the EGR valve, there was some carbon, but not much. There was only a think layer of carbon. I cleaned it up. I did reset the light, and now waiting to see if the light comes back. If the light comes back, does it necessarily mean that a new EGR valve will solve it? Thanks.
Did you also clean the tube between the exhaust manifold and the EGR valve? The tube, especially where it connects to the exhaust manifold, may be clogged and you will get the same trouble code.
If the check engine light illuminates again, then you should check the trouble codes again because it is possible that the same or a different fault is causing the light to come on.
If you get the same trouble code (P0401), then the diagnostic process is pretty much the same. A replacement EGR valve may or may not solve the problem because the EGR valve may or may not be the cause of the check engine light. If you are willing to replace a part even though the parts replacement may not solve the problem, then you can replace the EGR valve.
Sounds like your daughter needs some "Tough Love" - When she tries the Puppy Eyes Act introduce her to the Boy Scout Orienteering curriculum.
"You are here - you need to get there - here's a good map and a compass, figure it out." If you want to be thorough toss in a pocket altimeter, a pocket weather radio so she can get the barometric correction, and the region's USGS 7.5 minute topo maps.
And always have a good map-book in the car - Do they have Thomas Guides for New York and Joisey?
(Just Looked - Nope, still primarily Metro California, LA and SFO and environs. But they're starting to go north and east a bit, Phoenix AZ, Tuscon AZ, King and Snohomish Counties WA, etc.)
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You really need to borrow a MityVac vacuum pump/gauge from Autozone (free with deposit) to diagnose the system. The problem may be insufficient vacuum to open the EGR valve and not the valve itself.
So the EGR valve itself may be fine and if so you shouldn't spend nearly $200 to replace it. I don't believe in swapping parts to fix a problem, because it's easily turns into a good way to waste money.
If you borrow the MityVac then you can do two things and try to isolate the problem to the valve or modulator side:
LOL! She learned from one of the best - her mother. When I give my wife directions somewhere, she insists on "left" and "right," not "east" and "west." Never mind that the streets in the Chicago area are pretty much lined up east-west and north-south, and if you miss a turn, the left turn becomes a right turn. I don't have any trouble teaching orienteering to a
10 year old Boy Scout, but those proven techniques don't work with my wife.Oddly enough, my daughter doesn't seem to have too much trouble finding her way around in one of the other cars that doesn't have the navigation feature.
We keep a Rand McNally book that is the same format as the Thomas Guides - other than the small fonts, they just as easy as the navigation system.
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