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> Several problems with car, Nissan Sentra B14 (22 years old)

SilenTz_1993
post Dec 3 2018, 10:53 PM, updated 2d ago

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Hello all sifus!

Trying to troubleshoot my own car right now... has a few problems here and there. Would love to get some tips on where and what to look at! Driving a Nissan Sentra B14 myself here.

Oil change, radiator water, brake fluid etc. I do my best to change/top them up when needed.

A few problems below that I can't really figure out:

1. When accelerating, its almost as if there is a second "motor" that gives a somewhat high pitched whirring noise - the harder I press the pedal the louder the noise gets. However, the whirring noise goes off once the car is is approx 50km/h (I think)
2. Idling is somewhat rough, feels like my engine's RPM is very high (RPM meter rosak liao btw sweat.gif). Tried to adjust the idle speed but once its idling nicely and not very loudly, my engine feels like it's close to stalling every now and then.
3. I've topped up my brake fluid recently (warning lights came on) but I wonder if it's a normal occurrence or should I be worried and send my car to a mechanic to check my brake system out?
4. I can smell gas when my gas tank is filled to max (eg. auto pump still stop). Once its down about 5L-ish I don't smell it anymore. My mechanic couldn't find anything on the gas tank he said. Any ideas?

Appreciate any input and insights.

Thank you! biggrin.gif

This post has been edited by SilenTz_1993: Dec 4 2018, 11:17 AM
ahchun
post Dec 3 2018, 11:04 PM

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From: HeRe
QUOTE(SilenTz_1993 @ Dec 3 2018, 10:53 PM)
Hello all sifus!

Trying to troubleshoot my own car right now... has a few problems here and there. Would love to get some tips on where and what to look at! Driving a Nissan Sentra B14 myself here.

Oil change, radiator water, brake fluid etc. I do my best to change/top them up when needed.

A few problems below that I can't really figure out:

1. When accelerating, its almost as if there is a second "motor" that gives a somewhat high pitched whirring noise - the harder I press the pedal the louder the noise gets. However, the whirring noise goes off once the car is is approx 50km/h (I think)
2. Idling is somewhat rough, feels like my engine's RPM is very high (RPM meter rosak liao btw  sweat.gif). Tried to adjust the idle speed but once its idling nicely and not very loudly, my engine feels like it's close to stalling every now and then.
3. I've topped up my brake fluid recently (warning lights came on) but I wonder if it's a normal occurrence or should I be worried and send my car to a mechanic to check my brake system out?

Appreciate any input and insights.

Thank you!  biggrin.gif
*
1. possible of gear box or sound system. turn of ur sound system if still got may want to check ur gearbox
2/ not really sure this one
3. NOT NORMAL. better check. brake fluid not suppose to reduce till red light la unless leak somewhere.
SilenTz_1993
post Dec 3 2018, 11:49 PM

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QUOTE(ahchun @ Dec 3 2018, 11:04 PM)
1. possible of gear box or sound system. turn of ur sound system if still got may want to check ur gearbox
2/ not really sure this one
3. NOT NORMAL. better check. brake fluid not suppose to reduce till red light la unless leak somewhere.
*
1. I do listen to it with AC and sound system both off. Is there a possibility for any of my belts to be faulty somehow? (Looked and I think they seem ok)
2. No worries, thanks for chipping in!
3. Alright.. thanks for the heads up. Will get it checked soon!
SilenTz_1993
post Dec 7 2018, 05:37 PM

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Sorry if this is not allowed.. just wanted to bump my thread up to see if I can get any additional feedback or not. Changed my spark plugs (old ones way past their mileage) but doesn't seem to have fixed the rough idling issue.. haha

Thanks!
cempedaklife
post Dec 7 2018, 08:25 PM

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How old is your car and what mileage? Sorry not familiar with your model.

Advisable to clean your throttle body. Mine 100km 7 years, idle a bit rough. Clean it and no such issue anymore. You will see many forum people recommend it as well.

This post has been edited by cempedaklife: Dec 7 2018, 08:27 PM
SilenTz_1993
post Dec 8 2018, 01:00 AM

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QUOTE(cempedaklife @ Dec 7 2018, 08:25 PM)
How old is your car and what mileage? Sorry not familiar with your model.

Advisable to clean your throttle body. Mine 100km 7 years, idle a bit rough. Clean it and no such issue anymore. You will see many forum people recommend it as well.
*
Hey buddy! Its a Nissan Sentra B14 that is 22 years old, with ~530k mileage.

How would you go about cleaning the throttle body? I've seen reviews about this product Seafoam that seems to work pretty well. biggrin.gif
cempedaklife
post Dec 8 2018, 01:21 AM

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QUOTE(SilenTz_1993 @ Dec 8 2018, 01:00 AM)
Hey buddy! Its a Nissan Sentra B14 that is 22 years old, with ~530k mileage.

How would you go about cleaning the throttle body? I've seen reviews about this product Seafoam that seems to work pretty well.  biggrin.gif
*
Some workshop does it for you. And like you said. Seafoam works as well. Though in workshop they dontvl exactly use that.
SilenTz_1993
post Dec 8 2018, 11:06 AM

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QUOTE(cempedaklife @ Dec 8 2018, 01:21 AM)
Some workshop does it for you. And like you said. Seafoam works as well. Though in workshop they dontvl exactly use that.
*
Hmm okay, in your experience how much can I expect it to cost for throttle body cleaning at a workshop?

And do you know where I can find Seafoam? I couldn't find the throttle body cleaning one in Ace Hardware @ Ikano.

Cheers biggrin.gif
rcracer
post Dec 8 2018, 11:12 AM

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QUOTE(SilenTz_1993 @ Dec 3 2018, 10:53 PM)
Hello all sifus!

Trying to troubleshoot my own car right now... has a few problems here and there. Would love to get some tips on where and what to look at! Driving a Nissan Sentra B14 myself here.

Oil change, radiator water, brake fluid etc. I do my best to change/top them up when needed.

A few problems below that I can't really figure out:

1. When accelerating, its almost as if there is a second "motor" that gives a somewhat high pitched whirring noise - the harder I press the pedal the louder the noise gets. However, the whirring noise goes off once the car is is approx 50km/h (I think)
2. Idling is somewhat rough, feels like my engine's RPM is very high (RPM meter rosak liao btw  sweat.gif). Tried to adjust the idle speed but once its idling nicely and not very loudly, my engine feels like it's close to stalling every now and then.
3. I've topped up my brake fluid recently (warning lights came on) but I wonder if it's a normal occurrence or should I be worried and send my car to a mechanic to check my brake system out?
4. I can smell gas when my gas tank is filled to max (eg. auto pump still stop). Once its down about 5L-ish I don't smell it anymore. My mechanic couldn't find anything on the gas tank he said. Any ideas?

Appreciate any input and insights.

Thank you!  biggrin.gif
*
1. Some bearing is about to die , common bearing are wheel bearing , belt tensioner bearing, alternator bearing, air cond compressor bearing. Bearings always have one definitive character, the higher the rpm the louder or the faster the louder.

2. Find factory setting and reset and fix rpm meter. Nothing can be adjusted blind is a total waste of time. Or is auto choke system clogged

3. Definitely leak and need more investigation

4. Gas tanks vent to air
cempedaklife
post Dec 8 2018, 11:37 AM

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QUOTE(SilenTz_1993 @ Dec 8 2018, 11:06 AM)
Hmm okay, in your experience how much can I expect it to cost for throttle body cleaning at a workshop?

And do you know where I can find Seafoam? I couldn't find the throttle body cleaning one in Ace Hardware @ Ikano.

Cheers  biggrin.gif
*
80rm throttle cleaning.
60rm for machine relearning.
Done together.
But somehow they just charged me rm120 for both.
There is 2 seafoam. You need thw spray one.
I can't find the spray in ace publika. But spray can be found in ace taman melawati setapak.


Deja Vu
post Dec 8 2018, 01:35 PM

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QUOTE(SilenTz_1993 @ Dec 3 2018, 10:53 PM)
Hello all sifus!

Trying to troubleshoot my own car right now... has a few problems here and there. Would love to get some tips on where and what to look at! Driving a Nissan Sentra B14 myself here.

Oil change, radiator water, brake fluid etc. I do my best to change/top them up when needed.

A few problems below that I can't really figure out:

1. When accelerating, its almost as if there is a second "motor" that gives a somewhat high pitched whirring noise - the harder I press the pedal the louder the noise gets. However, the whirring noise goes off once the car is is approx 50km/h (I think)
2. Idling is somewhat rough, feels like my engine's RPM is very high (RPM meter rosak liao btw  sweat.gif). Tried to adjust the idle speed but once its idling nicely and not very loudly, my engine feels like it's close to stalling every now and then.
3. I've topped up my brake fluid recently (warning lights came on) but I wonder if it's a normal occurrence or should I be worried and send my car to a mechanic to check my brake system out?
4. I can smell gas when my gas tank is filled to max (eg. auto pump still stop). Once its down about 5L-ish I don't smell it anymore. My mechanic couldn't find anything on the gas tank he said. Any ideas?

Appreciate any input and insights.

Thank you!  biggrin.gif
*
1. Suspecting 1 or more bearings are worn. Try to listen if it's a wheel bearing (and on which wheel) or if it's coming from the gearbox.

2. My dad has a Ad Resort with a carb-fed GA16DS and no valve timing control mechanism unlike yours. It previously had very low idling especially when the compressor starts, and was diagnosed with a faulty IACV. Yours could be the same. But fix that tachometer 1st as it‘ll help in the tuning process and I believe it's failure is common especially for B14s. By the way, it's always better to tune when the engine is at running temperature/hot, and based in your mileage it's also a good time to have the throttle body cleaned before tuning.

3. There are 2 main reasons for low brake fluid levels, a leaking system or worn brake pads/shoes where the fluid us pushed further in to press the pads.

4. Check the hoses leading to the evap canister and the canister itself.
SilenTz_1993
post Dec 9 2018, 12:05 PM

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QUOTE(rcracer @ Dec 8 2018, 11:12 AM)
1. Some bearing is about to die , common bearing are wheel bearing , belt tensioner bearing, alternator bearing, air cond compressor bearing. Bearings always have one definitive character, the higher the rpm the louder or the faster the louder.

2. Find factory setting and reset and fix rpm meter. Nothing can be adjusted blind is a total waste of time. Or is auto choke system clogged

3. Definitely leak and need more investigation

4. Gas tanks vent to air
*
1. Will try and listen to it.

2. RPM meter.. should go to accessory shop or normal repair shops?

3. Yes found the leak source already earlier this morning. Thank you! smile.gif

4. Found the leak too. My fuel line has a small fracture that leaks petrol

biggrin.gif


QUOTE(cempedaklife @ Dec 8 2018, 11:37 AM)
80rm throttle cleaning.
60rm for machine relearning.
Done together.
But somehow they just charged me rm120 for both.
There is 2 seafoam. You need thw spray one.
I can't find the spray in ace publika. But spray can be found in ace taman melawati setapak.
*
I see. Might bring my car to a workshop soon.

I managed to find Seafoam @ Ikano Ace Hardware yesterday haha. Seems like real new stock. But for the life of me i CANNOT get the air intake pipes to open up to insert the pipe in. Its so rigid.. Maybe the rubber all too old already sweat.gif


QUOTE(Deja Vu @ Dec 8 2018, 01:35 PM)
1. Suspecting 1 or more bearings are worn. Try to listen if it's a wheel bearing (and on which wheel) or if it's coming from the gearbox.

2. My dad has a Ad Resort with a carb-fed GA16DS and no valve timing control mechanism unlike yours. It previously had very low idling especially when the compressor starts, and was diagnosed with a faulty IACV. Yours could be the same. But fix that tachometer 1st as it‘ll help in the tuning process and I believe it's failure is common especially for B14s. By the way, it's always better to tune when the engine is at running temperature/hot, and based in your mileage it's also a good time to have the throttle body cleaned before tuning.

3. There are 2 main reasons for low brake fluid levels, a leaking system or worn brake pads/shoes where the fluid us pushed further in to press the pads.

4. Check the hoses leading to the evap canister and the canister itself.
*
1. Yep will try and listen!

2. Noted. For the Tachometer, any recommended place to get it fixed?

3. Brake pads quite new still, found some soiled parts on my brake lines.. suspect leaking is there. Will investigate further soon!

4. Canister = Gas Tank? Anyway I found a leak in my gas line from filter to fuel injector - changed the tubing now have to see if that's the source.



Anyway, I really appreciate all the responses guys. Thank you! biggrin.gif

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