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Old 08-13-2019, 09:50 AM   #46
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


I don't see an evap code so I would forget it. If there is a code, we do this last. Those 'oil foulers' you mentioned, did they come off the rear(downstream) o2's? If so and you don't have cats, save them as they are the o2 extenders that lie to the PCM. Sometimes I've put 2 of them on an o2 to get it to lie correctly.
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Old 08-13-2019, 01:11 PM   #47
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


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I don't see an evap code so I would forget it. If there is a code, we do this last. Those 'oil foulers' you mentioned, did they come off the rear(downstream) o2's? If so and you don't have cats, save them as they are the o2 extenders that lie to the PCM. Sometimes I've put 2 of them on an o2 to get it to lie correctly.
BB the oil foulers were on the upstream sensors.

I went ahead and ordered a new gas cap along with the front and rear cats, I ordered a MAF sensor also. I sure do hope that is all that is wrong with this car, we are totally broke now. I will have to count my change to get a new air filter. lol

I will let you know how it does after I get all this stuff on there. Thank you ever so much again.
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Old 08-13-2019, 02:33 PM   #48
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


Ok. They came off the upstream o2's. Still keep them as you'll prolly need them for the rear. That bad MAF will make the PCM go crazy. Install New MAF, your upstream o2's, rear extenders for the downstream o2's , rear o2's and drive it. The air temp is in the MAF so once you replace the MAF, it should make the P0113 go away. Evap will take a while to recode, if it does.
Edit; I didn't rear your whole post. I was trying to see if you could get away without installing cats. Then you don't need the o2 extenders. Just install the rear o2 and keep those extenders. I'm pretty much positive that bad MAF screwed everything else up. Burning rich and melted the cats.
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Old 08-13-2019, 03:25 PM   #49
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


I can smell one running rich, If you know what it smells like, you should be able to also.

That will surely cause the cats to die an early grave.


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Old 08-13-2019, 03:57 PM   #50
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


I was looking up what an air filter for the car and saw what the one I have on there costs, can you believe someone gave for that K&N filter. At the auto parts here they are $54. The price of things have gone up so much it is unreal, even a regular filter is $16.

What blows my mind is parts from rockauto are as cheap as they are, ball joints for a little over $3, that is just crazy.

A quick question does rubber supposed to go under this engine mount they jury rigged?
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Old 08-13-2019, 04:17 PM   #51
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


Try to find out how that is supposed to be mounted, there might be special spacers that go there instead of those washers.

And K&N has always been way more expensive air filters, even in the 70's when I first saw them.

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Old 08-13-2019, 04:20 PM   #52
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


Jim,

Did you look for air leaks in the intake plumbing? if you have a leak that lets unmetered air in after the MAF it will run really bad... if at all depending on how much air is getting in.
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Old 08-13-2019, 07:22 PM   #53
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


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Jim,

Did you look for air leaks in the intake plumbing? if you have a leak that lets unmetered air in after the MAF it will run really bad... if at all depending on how much air is getting in.
No I didn't think to look there Ray, a leak didn't show up when I did a scan at least not there. The only leak that showed up was the Evap showed a small leak, I am really hoping that will be the gas cap.

Ed, would you have ever thought 8, 4 inch bolts and nuts would have cost $60.

I just have a feeling there is a spacer made of rubber or a solid spacer goes where they put those lock washers. One other thing I really need to correct is the engine is so close to the side wall. I literally had to drive a wooden wedge between the engine and the side wall to get the belt off. The balancer was no more than an 1/8 inch from touching the side wall. Something had to smack that car or it did the smacking.

I have looked everywhere I can think of to see another engine that has that type of mount to see what is there.
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Old 08-13-2019, 10:42 PM   #54
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


Quoted: Something had to smack that car or it did the smacking.



A CARFAX report will tell you if it ever had any accident reports, and extensive "real shop" body work.

I understand, that you are getting car poor, but as I suggested earlier, buying a report, will explain many things.

I make it a practice now to get one when I am serious about purchasing another ride.

Saved me a lot once, when I was looking at a KATRINA salvage junker.

They acted like they did not know that it had been flooded, and sold as scrap.


ED



PS. yes every engine that I have ever R&R ed, had rubber isolation mounting points, it's inconceivable that Nissan, would have mounted it that way as shown.

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Old 08-14-2019, 05:06 AM   #55
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


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Originally Posted by de-nagorg View Post
Quoted: Something had to smack that car or it did the smacking.



A CARFAX report will tell you if it ever had any accident reports, and extensive "real shop" body work.

I understand, that you are getting car poor, but as I suggested earlier, buying a report, will explain many things.

I make it a practice now to get one when I am serious about purchasing another ride.

Saved me a lot once, when I was looking at a KATRINA salvage junker.

They acted like they did not know that it had been flooded, and sold as scrap.


ED



PS. yes every engine that I have ever R&R ed, had rubber isolation mounting points, it's inconceivable that Nissan, would have mounted it that way as shown.
Actually this and the Pathfinder are all we have now. If we have a break down, there is no one to help us go get parts or have a ride so we need to have a backup.
Hmmm, hadn't thought about looking up the vin#.

There is rubber between that upper piece and the body of the car, just not between there and the engine.

Man I need more coffee. lol
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Old 08-14-2019, 11:14 AM   #56
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


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No I didn't think to look there Ray, a leak didn't show up when I did a scan at least not there. The only leak that showed up was the Evap showed a small leak, I am really hoping that will be the gas cap. <<Parts Canon

Ed, would you have ever thought 8, 4 inch bolts and nuts would have cost $60.

I just have a feeling there is a spacer made of rubber or a solid spacer goes where they put those lock washers. One other thing I really need to correct is the engine is so close to the side wall. I literally had to drive a wooden wedge between the engine and the side wall to get the belt off. The balancer was no more than an 1/8 inch from touching the side wall. Something had to smack that car or it did the smacking.

I have looked everywhere I can think of to see another engine that has that type of mount to see what is there.

The pulley being that close to the wall concerns me. Either motor mounts are bad, engine cradle has shifted, bent. Something isn't right. You should be able to run your hand through there, except the Mini Cooper. Those thing are sandwiched in there. Found a link at you tube.
That bracket that connects to the Passenger side motor mount is not installed properly.
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Old 08-14-2019, 11:32 AM   #57
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


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The pulley being that close to the wall concerns me. Either motor mounts are bad, engine cradle has shifted, bent. Something isn't right. You should be able to run your hand through there, except the Mini Cooper. Those thing are sandwiched in there.
Wow, that is what I thought, how could a wrench fit in there if it were that close, I would have to pull the engine to take a bolt out. I will be doing some serious checking to see what I can see under there. I will get some photos and show you what I mean about being close.

If that cradle is bent, I don't know how I will unbend it but I will sure try. I see where several things have been jury rigged on the car and that does concern me. The jake leg told us an old woman had something in the rear of the car removed. Lying son of a gun. No little old lady had this car, no way a little old lady would have spent $54 for a K&N air filter. Little old ladies don't care much for a straight stick. A little old lady couldn't get any shop in their right mind to cut out a cat and weld a straight pipe in there either. And you know a shop sure isn't going to suggest it.

I hope there aren't more surprises down the road. Man I can really pickum,

Thanks BB, I will let you know what I find once I get back under the car.
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Old 08-14-2019, 12:16 PM   #58
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


Damn, Jim. If it weren't for bad luck you wouldn't have any luck at all.


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Wow, that is what I thought, how could a wrench fit in there if it were that close, I would have to pull the engine to take a bolt out. I will be doing some serious checking to see what I can see under there. I will get some photos and show you what I mean about being close.

If that cradle is bent, I don't know how I will unbend it but I will sure try. I see where several things have been jury rigged on the car and that does concern me. The jake leg told us an old woman had something in the rear of the car removed. Lying son of a gun. No little old lady had this car, no way a little old lady would have spent $54 for a K&N air filter. Little old ladies don't care much for a straight stick. A little old lady couldn't get any shop in their right mind to cut out a cat and weld a straight pipe in there either. And you know a shop sure isn't going to suggest it.

I hope there aren't more surprises down the road. Man I can really pickum,

Thanks BB, I will let you know what I find once I get back under the car.
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Old 08-14-2019, 02:56 PM   #59
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


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Damn, Jim. If it weren't for bad luck you wouldn't have any luck at all.
Buddy, ain't that the truth. It has been that way all my life, if anything can go wrong or be messed up it will happen to me. Looks like I would be use to it by now. LOL

Now on top of this, the AC in the Pathfinder isn't working at all. I just don't have the time to check it out right now.

I have got to put a Catalytic converter and both tie rod ends on our daughter's car so she can get it inspected. Man I am too old for this stuff. Well at least it is exercise. lol If I wasn't retired, I would never find time to do all this.
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Old Yesterday, 07:07 AM   #60
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Re: 2008 Nissan Sentra Stumbles at 3000 RPM


Tell me about it... Same here. I just replaced the aftermarket backup camera in my Tacoma yesterday. It was a Pioneer that I put in with a JVC head unit 10 years ago. I had since changed out the head unit to a Pioneer a few years ago and the camera was still good. But it died about a year ago. Now I am retired no excuse to let it go.

It could maybe have been a simple job if I had got another Pioneer cam but for some reason I picked an Alpine. Looked like a better cam. Tried splicing it in but no video. Turns out the Pioneer cam's power supply was putting out lower voltage (3.5V) than the Alpine (6V). Maybe that's why the Pioneer cam "died"?? I dunno.

So I had to do the full monty to install the new power supply and extension cable to the camera... rip out the head unit, pull all the dash panels, remove the driver's seat, etc. Up, down, crawling around and under... last night I felt like I went ten rounds with Mike Tyson.


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Man I am too old for this stuff. Well at least it is exercise. lol If I wasn't retired, I would never find time to do all this.
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