Insufficient EGR Flow - Toyota Nation Forum : Toyota Car and Truck Forums

waynek57 · 09-20-2005, 08:12 PM

Scanner says "Insufficient EGR Flow."

I replaced the EGR but after about 2 days the check engine is back on. I have a 2001 Camry with a 4 cyl
any ideas?

camry-4-ever · 09-20-2005, 10:34 PM

Do a search on the VSV valve on here. This has been covered and there is a lot of good information on it. I had the same problem. It ended up being the VSV valve under the intake manifold. Check around before buying anymore parts, I'm sure you'll see it will most likely be the VSV valve but do the search and see what you think.

waynek57 · 09-21-2005, 04:40 AM

That sounds like that might be the problem. Do you have to take the intake manifold off to replace it? and Where is a good place to buy the VSV valve?
thanks alot for the help

88 LE · 09-21-2005, 05:26 AM

Quote:

Originally Posted by waynek57

Do you have to take the intake manifold off to replace it?

No.

You can get to it from underneath the car.

deekay140 · 09-21-2005, 09:57 AM

Dealer Is About $55 For Vsv, Use A Long Extension And Ratchet, Go Through Pass Side Wheel Well. (12mm Bolt)

celica supra 83 · 09-21-2005, 10:51 AM

By the way there is 3 of these vsv's,one under the intake,one by the charcoal canister and one somewere else uner the hood,you can make theme click on and off using the toyota hand held tester.the one that don't click is jamed,that's the way to check them.From experience it usualy is the one under the intake that let's go

waynek57 · 09-28-2005, 07:20 AM

hello,

ok so the check engine light has gone off by itself. I haven't replaced the VSV. Is this normal? Doesn't the computer need to be erased before the light goes out?
a problem somewhere esle?

Kep · 09-28-2005, 09:55 AM

Don't forget to consider the tube supplying exhaust to the EGR valve, it can get all gummed up. In my '90 model the EGR valve has a rubber tube going to a "modulator" that got crudded up also. It was an easy thing to clean. The other considerations are also valid but before you just go throwing parts at it figure out what is actually wrong. There are vacuum checks that I can run on the 1990 model to verify if the EGR and modulator are operating well. I suspect that yours too has a procedure determine this.

Kep