Questions tagged [evap]

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8
votes
2answers
157 views

Ford Expedition Eddie Bauer 4.6 V8 2003 automatic rpm goes high

When driving, sometimes when I want stop the vehicle, I go to press the brakes, but that time engine rpm goes high, keeping brakes pressed hard, after 5 second engine becomes normal. It goes high when ...
7
votes
1answer
6k views

Can't fill car up with gas

I can no longer fill up my gas tank in one go. This started gradually over a few months, initially only happening at one pump at the closest station. Now, however, I can't get more than a gallon or ...
6
votes
1answer
10k views

What is supposed to happen when my Subaru's test mode connector is hooked up?

There's an electrical connector under the dash of my 2000 Subaru Forester that is apparently instrumental in the diagnosis of some OBD-II trouble codes. It's a pair of bladed terminals like any other ...
6
votes
1answer
574 views

Check engine light with code P0455 comes on when fuel tank is below 3/4 full

In my 2001 Mazda Miata, the check engine light comes on when the fuel tank is at the 3/4 full mark. The code is DTC P0455 - Evap System Large Leak Detected I have replaced the fuel cap already. What ...
5
votes
1answer
2k views

Canister purge valve constantly opening

I have a 2008 Hyundai Santa Fe GLS, 2.7 L V6, 2WD, 5-speed manual, 113,000 miles. I recently replaced the Canister Purge Valve, because the solenoid was burned up and check engine light was on for ...
5
votes
0answers
613 views

Evap. circuit malfunction on Mercedes Benz

I have a 2002 ML320 suv. The CEL is on, and the code is P0446. It states that there is something wrong with the evap. system circuit, specifically at the charcoal canister shut-off valve. I've tried ...
4
votes
1answer
1k views

Replaced my upstream O2 sensor, still get P1133 code

I had the following error codes P1133 - HO2S Insufficient Switching Bank 1 Sensor 1 P0133 - O2 Sensor Circuit Slow Response Bank 1 Sensor 1 P0130 - O2 Sensor Circuit Bank 1 Sensor 1 P0442 - EVAP ...
4
votes
1answer
141 views

Difference between P0133 and P1133

What is the difference between P0133 and P1133? I believe my car has thrown both of these error codes because I've written them down, but I can't find any difference by Googling them.
4
votes
1answer
2k views

Can I keep driving with P0456?

I have a check engine light with code P0456 (Evaporative Emissions System - Small leak detected). I replaced the gas cap and cleared the code, but the CEL came back after couple of days. Next step ...
4
votes
1answer
258 views

Thumping from rear of car after shutdown: EVAP system?

In a 2004 VW R32, after shutting down the engine, a repeated thump is heard approximately 2 times a second from the rear of the car. What are the likely sources of this noise? My first thought is ...
4
votes
2answers
473 views

Evaporator canister purge system advice needed

1995 Blazer - 4.3 L Vortec V6 CMFI (vin W w/ PCM) 230,000 miles There are no trouble codes. This is a OBD-I or 1.5 system from a GM transitional year (I have the OBD-II style connector). I have ...
3
votes
2answers
54 views

Replace discontinued evap line?

My evap line got damaged and the part has been discontinued by Volvo (its a 1996 850 model). The particular hose is the one that runs across the frame in the front. Can this line be replaced with a ...
3
votes
1answer
1k views

Evap code continues to warn after replacing the gas cap

Replacing the gas cap as suggested here worked for about a week. But now the check engine light (evap code) continues to re-appear. This is about the third time in three months the check engine light ...
3
votes
2answers
7k views

2000 Camry P0446 Evaporative Emission Control System Vent Control Circuit Malfunction

I have a 2000 Camry with 86,000 mi the check-engine light came on 4 days ago. It has come on intermittently in the past and then shut off itself. This time it hasn't gone away. A Code reader shows ...
3
votes
1answer
232 views

How does EVAP interact with a vehicle?

I have an EVAP system (mandated by California) on my Yamaha FZ-07, but only a minimal idea of how it works. First of all, it looks like my fuel tank has a separate "breather" hose separate from any ...
3
votes
1answer
99 views

Unresolvable system leak error codes

I have had my mechanic replace multiple components in my EVAP system trying to resolve the following error codes which occur in no particular order within 24 hours after resetting my memory and cold ...
3
votes
0answers
170 views

Coolant fluid in canister purge valve line

I have a 2008 Hyundai Santa Fe GLS, and my check engine light came on because of a failure to purge code. I took off the canister purge valve and immediately thought I had misidentified it, because ...
3
votes
0answers
929 views

Replace 2009 Cobalt LNF Fuel Tank Pressure Sensor and Shroud

How difficult is it to replace the fuel tank pressure sensor and shroud on a 2009 Chevrolet Cobalt (LNF/SS)? The shop just quoted me over $200 for this. From what I can tell, the parts should be ...
2
votes
2answers
3k views

EVAP System or faulty CEL?

I drive a 4 cylinder 2001 Honda Accord LX and recently my check engine light turned on. The code was for the EVAP system, but I was wary of having it repaired immediately. I see 3 problems with a ...
2
votes
1answer
87 views

1986 Dodge B250 - EVAP cannister removed, pressure in gas tank, ramifications / solutions

I have a 1986 Dodge B250 van with the 5.2L Chrysler V8, one of the last years before they switched to fuel injection. It's a camper conversion van, has low mileage and runs/drives great. Since I got ...
2
votes
1answer
943 views

How are EVAP system leaks detected by the ECU?

I am curious which sensor(s) detects an EVAP leak and throw error codes, for example: P0442 - EVAP System Leak Detected (small leak) P0455 - EVAP System Leak Detected (large leak) My car is a 2003 ...
2
votes
1answer
239 views

95 blazer evap can purge solenoid valve to evap purge pressure switch valve

Reassembling evap purge solenoid valve to evap purge pressure switch valve any pics or websites that can help. Camera on phone doesn't work. Need visual aid to reassemble Help please .
2
votes
1answer
294 views

Are mineral oil smoke test machines sensor safe?

So there's heaps of DIY smoke test machines demonstrated around the web. I learned to built one of these, was kinda fun. It worked, even found a crack on my air intake that was messing with the ...
2
votes
1answer
1k views

Does every modern car have an evap vent valve?

My car has all the evap system, canister, and solenoid valve but as I am seeing on internet, people have [a] solenoid valve on their outlet vent on canister too which open and close by ECU to let the ...
2
votes
1answer
403 views

Evap vent valve normally open - fuel vapors don’t leak out?

I’ve been reading up on general evap system operation and apparently the canister vent balance is normally open to the atmosphere and closes during leak testing and when vapors are being pulled into ...
2
votes
2answers
488 views

I need the correct 2010 hyundai veracruz drive cycle steps to clear a “Permanent ” P0456 code

Can anyone help me with 2010 Hyundai Veracruz drive cycle steps/procedures to clear a stubborn "Permanent P0456 EVAP very small leak" code? I have replaced the gas cap with genuine hyundai cap and ...
2
votes
1answer
288 views

Vent Valve (Solenoid) leak and fuel consumption

NOTE: The car is 2006 Mercury Milan 2.3L 4cyl. About ten months ago I have hit a pothole and my exhaust fell and the check engine light immediately came up. I've put back the exhaust and drove home. ...
2
votes
0answers
32 views

Are there safe DIY ways to find an EVAP leak?

So, I have a 2000 Chevrolet Malibu. I've been fighting with an EVAP leak (code PO442, a small leak) for a few months now. When I originally had it smoke-tested at the mechanic, they told me that it ...
2
votes
0answers
47 views

Illusive evap code - Hard to find the issue

98 Honda Civic Ex. For a while now my car will throw a p1456 evap code but sometimes it doesn't and the system completes the test. I'll randomly hook up my obd2 scanner and it'll either have a ...
1
vote
1answer
122 views

Which codes does the front oxygen sensor throw?

I have these three O2 related sensor error codes. Are they all codes for the front 02 sensor (the one in-front of the catalytic converter) ? P1133 - HO2S Insufficient Switching Bank 1 Sensor 1 P0133 -...
1
vote
1answer
2k views

Why gas build up in tank?

My car is building gas when I open the gas tank it releases the gas, I know all about purge system and I have tried different cap and also different vapor canister too but problem still insists, for ...
1
vote
1answer
32 views

EVAP Leak One Day After Engine Work - Unrelated?

I have a 2012 Ford Focus that was idling rough. I brought it in to a local shop who showed me some very corroded spark plugs. They replaced the plugs and also an air filter. When I picked up the ...
1
vote
1answer
138 views

Can the evap canister valve be ordered and replaced separately for a 2001 Toyota Camry

I'm tripping some codes for the check engine light and took my car in to get repaired. They did a smoke test and are fairly certain that I need to replace a valve on the canister (there are others ...
1
vote
1answer
409 views

Drive cycle procedure for a 2001 Hyundai Accent

I have 2001 Hyundai Accent L 1.5 liter, 4 speed stick shift. The Check Engine light is on. The code that is coming up is "EVAP under lean P1128 Fuel Trim Lean". All other monitors are good. I need to ...
1
vote
1answer
3k views

08 Hyundai Santa Fe Evap Leak (Large)

My 08 Hyundai Santa Fe, 86k miles, check engine light came on, then I smelled fuel. I had it scanned and it said Evap Leak Large, fuel level sensors. Can this be correct? Should it be the fuel ...
1
vote
0answers
19 views

Will an evap canister leak make the same noise as a cracked exhaust?

Video of driving recorded with iPhone SE(5). 2002 Honda Accord, parked outdoors New England, 214,000 miles Regular oil changes 1 owner before me, I got it around 150,000 great service records. Tran ...
0
votes
0answers
50 views

What would cause a new EVAP canister to fail after 6 months, 3,000 miles?

When I bought my truck two years ago, it started throwing all sorts of codes. As I sorted them out, the last one I was dragging my feet on was replacing the EVAP canister, which I was told the switch ...