excessive EGR flow

landtank

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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
 
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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... :flipoff2:
 
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bjowett said:
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-
 
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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
 
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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.

 
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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
 

concretejungle

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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. . . . . .
 
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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.
 

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