Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [evap]

56 questions
8
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2 answers

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 rpm is more than 2000. I changed tps, air idle…
bal Sihota
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7
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1 answer

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 so before the pump clicks off. I then have to pull…
3Dave
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6
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1 answer

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 on the car: Specifically, some of the…
jscs
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6
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1 answer

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 could be causing this? How do I diagnose this?
Charles Bradley
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6
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1 answer

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 literally everything, (replacing valve, checking…
user3211857
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5
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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 is to take it to a mechanic and have them hook up a…
rana
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5
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2 answers

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 that code. I noticed when I was replacing it that it…
Dexter
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5
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3 answers

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 issues that are possibly related to the Evaporator…
Sparky
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4
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1 answer

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 something related to the evaporative emissions (EVAP)…
mac
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4
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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 System Leak Detected (small leak) P0455 - EVAP System…
the_prole
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4
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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.
the_prole
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3
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What are the side effects of disabling fuel tank ventilation?

what are the side effects of disabling fuel tank ventilation? Especially for petrol cars. Is it true that the ventilation system, which constantly allows the air to move into and out of the tank worsens the quality of the fuel?
locke
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3
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1 answer

Understanding the Voltage coming into an Evap Purge Solenoid

I am trying to understand how the evap purge solenoid is controlled by the ECM. In my case we are talking a 2011 Wrangler JK, but I believe the system works similarly in many other vehicles. I understand the the opening and closing of the solenoid…
CRAIG
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Evap System Leak, Repair and Clear Codes to Pass USA State Emission Inspection?

I'm aware of two related issues here Does Check Engine Light Clear Itself... I need the correct 2010 ... drive cycle steps to clear a “Permanent ” P0456 code I've just completed a particularly nasty repair on a Mazda3, where the top of the fuel…
zipzit
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3
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1 answer

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 has appeared. Each time the code is EVAP CODE. I…
zundarz
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