excessive EGR flow (1 Viewer)

[landtank]

I'm posting this here just because.

My daughters 94 Camry has a CEL indicating excessive EGR flow. I've always thought this to be a bad EGR valve not closing properly.

Any other thoughts out there before I give CDan a call tomorrow.

Thanks

 

[bjowett]

What engine? I have some 3vzfe V6 parts floating around... think they are from a 93.

 

[landtank]

it's the V6 Brian, I don't know the identification numbers

 

[bjowett]

The V6 in the 94 should be the 3VZ-FE.... if you need some misc. parts for testing prior to ordering from Cdan, I think much of the EGR is kicking about.

Let me tie this into the 80's section for you so it dosn't get moved... I plan to use the external EGR cooler from the 3VZ-FE on my 1FZ. Running it through the back of the head just throws more stress towards number 6...

 

[Beowulf]

I plan to use the external EGR cooler from the 3VZ-FE on my 1FZ. Running it through the back of the head just throws more stress towards number 6...

Brian,
This is an excellent idea if you can pull it off. If I remember correctly, the Aussies don't have EGR on their 1FZ-FE engines. They also don't have the frequency of HG failures like we have here in the US (with EGR.)

I have always thought the two were related somehow though there is no way to validate the theory.

-B-

 

[IdahoDoug]

Brian,

Talk to me, dude. My head will be on the workbench by 10am tomorrow and that's pretty much the only time you can mess with that EGR tube - on the bench. What are you thinking?? Is it a matter of applying some fins to the existing FZJ tube while I've got it off, or is there more to it? Your timing is excellent.

DougM

 

[bjowett]

I'll try to get some pics and info up in about an hour or so...

 

[IdahoDoug]

Thanks,

DougM

 

[bjowett]

Stock EGR passes through here...

The major hurdle lies in rerouting from the cast into the manifold egr path. If the area below was ground flat between the two studs, a hole drilled, and then a freeze plug slapped in the stock passage...

Routing through this piece could be a easy fab job... either connect via a stainless tube or redrill the 2 holes outboard a bit larger to match the pattern and bolt the external cooler right to the manifold.

 

[stlcruiser]

Greetings,

My 94 threw a code 71 (EGR system). Cheapest place to start was the EGR modulator. Even though it tested OK per FSM, I replaced it (no tools required). Reset the CEL, and have not thrown another code since. So far 500 miles.

Steve
94' 150,000

 

[landtank]

I see you're getting ready for winter Brian.

 

[concretejungle]

Brian, i remember a while back you posting a block heater from some other vehicle. Did you ever get anywhere with that?

Sorry Rick for the hijack. . . . . .

 

[landtank]

Sorry Rick for the hijack. . . . . .

Too late....run with it!

 

[Mr. Toad]

Excessive EGR flow:

If the '93 Camry EGR works like the big cruiser's, then your possible problems are:

1) EGR Valve stuck open
2) EGR VSV open malfunction
3) Open in VSV circuit for EGR
4) Short in EGR gas temperature sensor circuit
5) ECM problem.