I purchased this 2005 Nissan Quest from my brother inlaw several months ago. He said he didn't know why the check engine light was on, but they had just replaced the engine before it sat that winter. I should have walked away there. But being that my wife really liked it, I decided to go ahead and try and get it fixed. After having it checked up and down trying to find the source of the random misfire code p0300, I decided it would be best to take it to a Nissan dealer.

So I brought it into my local Nissan dealer to have the loss of power and misfire diagnosed. Paid $100 just to diagnose that it was a faulty ECU due to water damage. (Horrible spot for an ECU as well) They quoted me a ridiculous amount for an ECU, so I went and bought one myself and brought it in to have it reprogrammed. During the reprogramming process, it was discovered that the catalytic converters were throwing off the o2 sensors. The previous owner had gutted the cats thinking maybe it would have fixed their issue? I don't know, but it made the issue worse. So I was off to locate and purchase ALL THREE CATS on my own since that wasn't a cheap fix by any means.

Now I've purchased and had all three brand new converters installed. I'm thinking to myself at this point that it's been expensive so far, but if it runs good now, at least I'll be happy with that. So now that the cats are in, I called to schedule what they said needed was the rest of the programming process of having the air to fuel ratio programmed. They said they also cleared all the codes and was done. So I go to get in the van, and it ran just as crappy once again. In fact on the way home I had the check engine light come right on again. This time I was getting frustrated with Nissan. And even had words with my brother in law for selling me such a piece of crap.

I took the van into Meineke to have them do a diagnostic on the engine. They ran it through the scanner and they were able to find way more codes than Nissan told me about. They diagnosed it as being the throttle. Since my brother in law still had a parts engine at the shop, he gave me the throttle off of it. It ran slightly better after the throttle went thru the relearn process. However it didn't change the power and misfire issue still. My brother inlaw told me about his Quest and having to replace the timing chain on his, and one of my codes was for a timing issue being too forward? He said that the rattling noise that was coming from the timing cover was due to the timing chain, and that it could be costly. So that's when I decided to do a little bit of research on my own and found out about a class action lawsuit in CA, NY and NJ, and possibly other states soon to come.I read up on what others were doing bout the issue.

My research took me to a phone number to Nissan Consumer Affairs. Someone wrote that Nissan had helped them with their cost. So I called them and created a case number, and was told to bring it in to Nissan dealer and have them verify that its the timing chain, and to get an estimate. I called the dealer and let them know how unhappy I was, and that I refused to pay for this since Nissan itself asked me to bring it in.

After bringing it in, it was verified by the mechanic to indeed be the primary chain and guide as well as secondary chain and guide. Basically all of it. A total of $1,900 parts and labor.

I sent in all paperwork from dealer on the estimate, along with over $1,000 in parts and repair receipts. They wasted no time in getting back to me with their answer "No". I couldn't believe it, even after verifying that it's the timing chain, Nissan still won't help. They said it was because the vehicles mileage was too high. Right now I'm just waiting for a call back from Nissan about their determination, and waiting to speak with a supervisor. I jst asked to speak with someone who thinks it's in their best interest to keep this from going to court. Because right now I'm so frustrated at the time and cost of this vehicle, I will take it all the way if I have to.

I'm just doing research right now to arm myself with what to tell this person from Nissan when they call. Not that it'll probably make any difference. I will never in my life buy another Nissan vehicle, new or used.

WHILE DRIVING HOME FROM SHOPPING MALL, ALL OF SUDDEN ON HIGHWAY IT LOST POWER. Stopped at light and after that vehicle is not moving even after giving gas. people behind is getting panic in rush hour.

while taking left turn it is very scary. because vehicle is not pulling at required speed and opposite traffic might come before we move out of road.

There are lot of online complaints about this problem for 2005 Nissan quest and there is already a law suite filed with Nissan about the same. I would like to verify if Nissan will take replacement charges for this transmission issues?

Nissan cars can't live without check engine on! After I replaced camshaft bank1 and 2, crankshaft and I cleaned timing valve, yesterday I was coming back from work driving 290s from down town Chicago ,somehow car lost power. I was speeding 50mph and it went to 20mph. Light came on tcs of, slip and ses,, had a hard time getting to the shoulder because cars and trucks were passing me. I could not accelerate because of it. I saw myself in a very dangerous moment. THIS IS NOT A FAMILY VAN - NOT SAFE! government has to do something about those car killers + tons of problems they have.