3rd & 4th Generation (1992–1996 & 1997–2001)Toyota Camry Discussion for years: 1992-1996 & 1997-2001
Topics of discussion range from fuel economy, safety, modifications, performance all involving America's favorite family car, the Toyota Camry.
I think that's just a coolant temperature activated vacuum switching valve. Not likely to cause a gas smell... unless those vacuum lines go to the charcoal canister...?
Going back to the Gasoline Smell, this is very Urgent that you get this looked at and find out where the smell is originating from! Engine Fires can and will destroy a car and if you are keeping it in the Garage, it will destroy a house.
That's a temperature sensor for the EGR system. When the coolant's cold, it's shut and doesn't allow vacuum to pass. When the coolant's warm, it opens and allows vacuum to get to the EGR valve to open it. With the lines broken, the EGR will never open. Is the check engine light on?
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1992 Camry LE, V6 (3VZ-FE), ABS brakes, dark emerald pearl, owned since new. Replaced HGs @332k, now at 344k
1996 Avalon XLS, ABS brakes, super white II, acquired w/ 139k, now at 280k
2001 Yamaha FZ1, Ivan's jet kit, resprung, Ohlins rear shock, Race Tech cartridge emulators in forks, 47k miles
First, what is pictured in the 1st post is a VSV (vacuum switching valve), but it is not used in the EGR (exhaust gas recirculation) system, but rather in the EVAP system, controlling when to open the charcoal canister and pull fuel vapors back into the intake manifold to burn off those vapors.
Below is a vacuum diagram for a 93 Camry V6 (doesn't matter if you have the I4 or V6 engine, the emissions systems are essentially the same):
What is boxed in red is the part you have broken.
Now, what does the charcoal canister do in the EVAP system? Read below, and I think you will have your answer as to why you are smelling fuel vapor:
A charcoal canister is part of the evaporative emission control (EVAP) system in many modern automobiles. The EVAP system is designed to keep gasoline from evaporating into the atmosphere. Rather than venting a gas tank to the atmosphere, an EVAP system can allow fumes to flow into a charcoal canister. This canister contains activated carbon and is thus capable of adsorbing the fuel vapor. This adsorption process, coupled with the closed fuel system, can help ensure that a minimal amount of fuel vapor is allowed to reach the atmosphere.
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You're correct about that part's function for the 4 cylinder. And why it could be responsible for the fuel smell. I saw the TVV (a VSV would have an electrical connector) in the pic and remembered how it's used on my 3VZ, which is different than the 4 cylinder. My bad.
However, on the 92-93 V6, it *is* part of the EGR system. The 3VZ has two TVV's, and one of them is part of the EGR control system. And it's not the same as the 4 cylinder or the 94-onward 1MZ-FE V6. Here's the vacuum hose routing label for mine:
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1992 Camry LE, V6 (3VZ-FE), ABS brakes, dark emerald pearl, owned since new. Replaced HGs @332k, now at 344k
1996 Avalon XLS, ABS brakes, super white II, acquired w/ 139k, now at 280k
2001 Yamaha FZ1, Ivan's jet kit, resprung, Ohlins rear shock, Race Tech cartridge emulators in forks, 47k miles
You're correct about that part's function for the 4 cylinder. And why it could be responsible for the fuel smell. I saw the TVV (a VSV would have an electrical connector) in the pic and remembered how it's used on my 3VZ, which is different than the 4 cylinder. My bad.
However, on the 92-93 V6, it *is* part of the EGR system. The 3VZ has two TVV's, and one of them is part of the EGR control system. And it's not the same as the 4 cylinder or the 94-onward 1MZ-FE V6. Here's the vacuum hose routing label for mine:
Yes, you are correct - I just was focusing on the 2.2L 5S-FE, I guess. And the 2nd TVV on a V6 is shaped a bit different than the TVV in the initial thread. My bad.
I think we reached the same conclusion though. The TVV is question, if broken, will cause a fuel vapor smell. It may have already damaged the charcoal canister to the point of no longer being useful (it may be saturated). The place to start is to get the subject TVV replaced and see if, over time, the charcoal canister doesn't impact engine operation.
Yes, you are correct - I just was focusing on the 2.2L 5S-FE, I guess. And the 2nd TVV on a V6 is shaped a bit different than the TVV in the initial thread. My bad.
No prob, it's all good. Wasn't the first time I messed up, and I'm sure it won't the be last.
Quote:
I think we reached the same conclusion though. The TVV is question, if broken, will cause a fuel vapor smell. It may have already damaged the charcoal canister to the point of no longer being useful (it may be saturated). The place to start is to get the subject TVV replaced and see if, over time, the charcoal canister doesn't impact engine operation.
Yep!
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1992 Camry LE, V6 (3VZ-FE), ABS brakes, dark emerald pearl, owned since new. Replaced HGs @332k, now at 344k
1996 Avalon XLS, ABS brakes, super white II, acquired w/ 139k, now at 280k
2001 Yamaha FZ1, Ivan's jet kit, resprung, Ohlins rear shock, Race Tech cartridge emulators in forks, 47k miles
sorry for the delay i still have the gas smell. i can smell it on the drivers side. nope it aint parked in the garage. iam worried on day its all gonna blow up on me. i dont see any gas leaks i beleive theres a diffrence on smelling leaking gas and vapor gas. i will have to replace that part. i tried going to the wrecking yard awhile back and i remember seeing cars with caping this water port switch off.
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94 Corolla DX 4cyl Auto w/304,XXX
99 Camry LE 4cyl Auto w/104,XXX (Sisters car) m: fearkobe05
For reference, the only way you can smell gas is from vapor. So whether you see fuel or just recognize the smell, you can't determine if you have a liquid fuel leak or a fuel vapor leak.
While out in the salvage yard this weekend getting some replacement parts for a Celica, I found one of these TVV's for the charcoal canister. Based on what I was already getting, I figured they wouldn't charge me any extra for this part. If you want it, PM me - it's yours for the shipping charges.
The Following User Says Thank You to 93celicaconv For This Useful Post:
just go get a TVV from Toyota. They arent that expensive , are they? the TVV gets brittle over time. Thats why yours broke anyways. Might as well get a new one that will last 100,000 miles or more
While out in the salvage yard this weekend getting some replacement parts for a Celica, I found one of these TVV's for the charcoal canister. Based on what I was already getting, I figured they wouldn't charge me any extra for this part. If you want it, PM me - it's yours for the shipping charges.
we can give it ago and see if this will solve the problem
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94 Corolla DX 4cyl Auto w/304,XXX
99 Camry LE 4cyl Auto w/104,XXX (Sisters car) m: fearkobe05
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