hi i have a nissan pathfinder 2001 se. have and had these problems
1 service engine light soon -p1140 -intake valve timing control position sensor- solved the problem by switiching the sensors and replacing the bad one. first i had code p1140 .when i swapped the sensors,the code chaged from p1140 to p1145. from there i knew that the solenoid was fine.thanks to this nicoclub fourm and the members who helped me save money
2.. problem not solved
there is sterring vibration at seed of 47-50 mph. not a alignment problem something else
3.. when i am driving at speed of 40 -45 or even sometime at 50mph .. if i release the acclerator pedal (at these speed range) and press it back there is the knock as if like sudden jerk. i dont know what the problem is . ... i tried to solve it by adjusting the idle screw but did not help/ please help me on this as because of this i have a very rough ride it does not feel smooth as a pathfinder is supposed to... could it be solved by changing the other camshaft sensor even thoug the service engine light is not on?
stering vibration at speed 47-50mph and knock when ipress the acclerator at45-50
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pyrophilus
- Posts: 19
- Joined: Tue Aug 28, 2007 2:08 am
- Car: 1997 Pathfinder SE Offroad
2001 Pathfinder LE
2005 Pathfinder LE
2014 Pathfinder SL Premium
Re: stering vibration at speed 47-50mph and knock when ipress the ... (pprasai)
My '97 SE had same problem, vibration at 50ish MPH.The vibration is actually there at 30-50 too, but too faint to feel.Around 70-80MPH, the vibration is mostly gone, butif you are brave enough, and push to 99MPH, the vibration is back and back REALLY badly.
First, rule out the obvious, make sure you don't have a large bolt or anything like that puncturing your front tires.
Nissan dealer balanced my tires 3 times before I ruled them as idiots.Local goodyear dealer was going to re-balance the tires, to my protest, and then the goodyear manager, walking by said, "$5 says bent front driveshaft!"
Sure enough, the driveshaft was bent. I had it replaced and problem was gone. It seems that when the drive shaft is bent, and it rotates, it wobbles, causing vibrations. If you drive fast enough, you will hit a speed where the shaft will vibrate back and forth so evenly that the vibrations cancel each other out, thus the symptoms...
As for the knocking sound, my '01 LE had it. and my '97 and a similar problem. If you feel carefully, it's not the engine but actually coming from the rear of the vehicle. Something feels loose there. As someone described it to me back in '98, it feels like you are carring somehting heavy on wheels, loose in the rear cargo area, and when you step on the gas after cruising for bit, it makes a THUMP!
I replaced my rear shocks to no avail. My guess is that the rear suspension bushings are ruptured.
The '96-'98 R50's had this problem. After 80,000+ miles, the rubber bushings for the rear suspension arms would desintegrate, and makes the whole rear end sway when you step on/off gas while cruising on the highway.
The '99-'04 seem to have this fixed, but bushings still fail over time, and my guess is that you have a failed rear bushing.
how is your rear resonator? My '01 LE's rear resonator's joint rusted off, causing the rear end of the tail pipe to dangle. dealer said that it was fine driving like that (because it was backordered), but the hot exhaust gas ended up melting off the insulation on my fuel lines and then melted the solenoid for the EVAP canister... What a mess...
First, rule out the obvious, make sure you don't have a large bolt or anything like that puncturing your front tires.
Nissan dealer balanced my tires 3 times before I ruled them as idiots.Local goodyear dealer was going to re-balance the tires, to my protest, and then the goodyear manager, walking by said, "$5 says bent front driveshaft!"
Sure enough, the driveshaft was bent. I had it replaced and problem was gone. It seems that when the drive shaft is bent, and it rotates, it wobbles, causing vibrations. If you drive fast enough, you will hit a speed where the shaft will vibrate back and forth so evenly that the vibrations cancel each other out, thus the symptoms...
As for the knocking sound, my '01 LE had it. and my '97 and a similar problem. If you feel carefully, it's not the engine but actually coming from the rear of the vehicle. Something feels loose there. As someone described it to me back in '98, it feels like you are carring somehting heavy on wheels, loose in the rear cargo area, and when you step on the gas after cruising for bit, it makes a THUMP!
I replaced my rear shocks to no avail. My guess is that the rear suspension bushings are ruptured.
The '96-'98 R50's had this problem. After 80,000+ miles, the rubber bushings for the rear suspension arms would desintegrate, and makes the whole rear end sway when you step on/off gas while cruising on the highway.
The '99-'04 seem to have this fixed, but bushings still fail over time, and my guess is that you have a failed rear bushing.
how is your rear resonator? My '01 LE's rear resonator's joint rusted off, causing the rear end of the tail pipe to dangle. dealer said that it was fine driving like that (because it was backordered), but the hot exhaust gas ended up melting off the insulation on my fuel lines and then melted the solenoid for the EVAP canister... What a mess...