How many changed NVLD pump or the Purge Solenoid or Gas Cap?
How many changed NVLD pump or the Purge Solenoid or Gas Cap?
I am battling a P0441 on my 04 Neon SE. Couldn't find any obvious cracks on the visible parts of the hoses under hood and hear canister.
So here is a poll question.
How many of you have changed?
a. NVLD pump
b. Purge Solenoid
c. Gas cap
So here is a poll question.
How many of you have changed?
a. NVLD pump
b. Purge Solenoid
c. Gas cap
Usually it's the NVLD or the purge solenoid.
There are also tons more things that could be wrong such as cracks in the tank or filler neck vent tube.
Best is to have a mechanic smoke test the system with the DRBIII. That way you're not just replacing parts for something different.
There are also tons more things that could be wrong such as cracks in the tank or filler neck vent tube.
Best is to have a mechanic smoke test the system with the DRBIII. That way you're not just replacing parts for something different.
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"Try not. Do or do not." Yoda
"Try again, fail again. Fail better." Samuel Beckett
"The farther backward you can look, the farther forward you will see." Winston Churchill
"Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world." Albert Einstein
"Try not. Do or do not." Yoda
Fixed. P0441 was a bad NVLD.
Edit: Replaced the NVLD and no more P0441.gcretro wrote:I am battling a P0441 on my 04 Neon SE. Couldn't find any obvious cracks on the visible parts of the hoses under hood and hear canister.
So here is a poll question.
How many of you have changed?
a. NVLD pump
b. Purge Solenoid
c. Gas cap
- jonnymopar
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NVLD for me. I actually removed the purge solenoid and bench-tested it with a 12V supply, and it was fine, so I ruled that out. I talked to my cousin who's been a Chrysler tech for years and as soon as I said the code, he said with no reservation, replace the NVLD. No codes in 2 years!
Jon J.
2003 Neon SXT - new home, new owner. Thanks for everything, old friend.
1989 Daytona ES - 2.4L/A555 swapped
Official "I'm Going To Drive My Neon Until Jerry Buys It" Club Member #11
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NLVD
What does NLVD stand for?
Thanks
Thanks
- jonnymopar
- Junior Admin
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Natural Vacuum Leak Detection (module). Up to 2002, it was called the LDP (Leak Detection Pump). 2003+ has the NVLD. Functionally, I don't know what the difference is.
Jon J.
2003 Neon SXT - new home, new owner. Thanks for everything, old friend.
1989 Daytona ES - 2.4L/A555 swapped
Official "I'm Going To Drive My Neon Until Jerry Buys It" Club Member #11
Could a bad nvld result in my car always accelerating/ making my car feel like it had no power brakes? I've check all the vac lines very loosely. I'm going to go through again with a fine tooth comb. Any advice will be helpful
There's no "Man" in automatic
2001 Dodge Neon R/T - Sold
1993 240sx - Sold
2001 Dodge Neon R/T - Sold
1993 240sx - Sold
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It might if the vacuum line to the pump fell completely off.
The "pump" only puts a vacuum on the fuel tank/system to see if it can maintain that vacuum. If it cannot, depending on how fast the vacuum leaks off, it sets a code for either a large leak, (gas cap missing size hole) or a small leak, (hose slightly cracked type hole).
It doesn't care about an actual vacuum leak, only the size of hole that will let unburned fuel vapors into the atmosphere.
But it shouldn't let enough air in to keep the IAC from maintaining idle speed.
Possibly the brake booster diaphragm is leaking. Pull and plug the booster hose, and see if the engine idles down. Do not drive it with it unplugged, or not very fast. It is a bitch to stop, as I'm sure you have somewhat of an idea.
The "pump" only puts a vacuum on the fuel tank/system to see if it can maintain that vacuum. If it cannot, depending on how fast the vacuum leaks off, it sets a code for either a large leak, (gas cap missing size hole) or a small leak, (hose slightly cracked type hole).
It doesn't care about an actual vacuum leak, only the size of hole that will let unburned fuel vapors into the atmosphere.
But it shouldn't let enough air in to keep the IAC from maintaining idle speed.
Possibly the brake booster diaphragm is leaking. Pull and plug the booster hose, and see if the engine idles down. Do not drive it with it unplugged, or not very fast. It is a bitch to stop, as I'm sure you have somewhat of an idea.
Bill
1999 neon coupe 2.4 swap
2021 Forester
2000 Neon MTX swap with '02 R/T PCMOlha Koba, a psychologist in Kyiv, said that “anger and hate in this situation is a normal reaction and important to validate.” But it is important to channel it into something useful, she said, such as making incendiary bombs out of empty bottles.
1999 neon coupe 2.4 swap
2021 Forester
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