Car jerks while accelerating/driving
#1
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Car jerks while accelerating/driving
Hi guys,
Just have a quick question. My car jerks while acceleration or driving and the rpm bounces up and down. This only happens in the first 2-3 minutes of driving and when driven with the engine warm (about 5-10 minutes after starting from dead cold).
Do you know what it could be ? I'm sure it's not bad ignition coils or spark plugs as I've just installed new OEM spark plugs and Splitfire SDIS ignition coils not long ago. I have cleaned both my MAF sensors last weekend, and it's better (jerks less) but it's still there and I still can feel the jerking when I'm driving it. I'm going to clean my throttle bodies this weekend and see how it goes.
Thanks !
Just have a quick question. My car jerks while acceleration or driving and the rpm bounces up and down. This only happens in the first 2-3 minutes of driving and when driven with the engine warm (about 5-10 minutes after starting from dead cold).
Do you know what it could be ? I'm sure it's not bad ignition coils or spark plugs as I've just installed new OEM spark plugs and Splitfire SDIS ignition coils not long ago. I have cleaned both my MAF sensors last weekend, and it's better (jerks less) but it's still there and I still can feel the jerking when I'm driving it. I'm going to clean my throttle bodies this weekend and see how it goes.
Thanks !
#3
Registered User
Hi guys,
Just have a quick question. My car jerks while acceleration or driving and the rpm bounces up and down. This only happens in the first 2-3 minutes of driving and when driven with the engine warm (about 5-10 minutes after starting from dead cold).
Do you know what it could be ? I'm sure it's not bad ignition coils or spark plugs as I've just installed new OEM spark plugs and Splitfire SDIS ignition coils not long ago. I have cleaned both my MAF sensors last weekend, and it's better (jerks less) but it's still there and I still can feel the jerking when I'm driving it. I'm going to clean my throttle bodies this weekend and see how it goes.
Thanks !
Just have a quick question. My car jerks while acceleration or driving and the rpm bounces up and down. This only happens in the first 2-3 minutes of driving and when driven with the engine warm (about 5-10 minutes after starting from dead cold).
Do you know what it could be ? I'm sure it's not bad ignition coils or spark plugs as I've just installed new OEM spark plugs and Splitfire SDIS ignition coils not long ago. I have cleaned both my MAF sensors last weekend, and it's better (jerks less) but it's still there and I still can feel the jerking when I'm driving it. I'm going to clean my throttle bodies this weekend and see how it goes.
Thanks !
#4
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I doubt it's the ignition coils. They're supposed to be better than OEM, no ?
It says :
"Increases horse power and response due to giving a stronger spark at all levels through the RPM range and reduces misfire due to a poor spark"
#5
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I'm not 100% sure as I changed the ignition coils quite awhile ago.
I doubt it's the ignition coils. They're supposed to be better than OEM, no ?
It says :
"Increases horse power and response due to giving a stronger spark at all levels through the RPM range and reduces misfire due to a poor spark"
I doubt it's the ignition coils. They're supposed to be better than OEM, no ?
It says :
"Increases horse power and response due to giving a stronger spark at all levels through the RPM range and reduces misfire due to a poor spark"
#7
why would you change out the factory oem ignition coils? i highly doubt splitfire makes a better ignition coil then whats supplied by nissan/infiniti. as for your posted video its hard to distinguish what is going on with your car other then engine rpm fluctuation while under slow acceleration.
does your engine idle ok in park or neutral? does the engine want to stall out during acceleration? any check engine light malfunction displayed in cluster after putting the vehicle in a couple of drive cycles?
does your engine idle ok in park or neutral? does the engine want to stall out during acceleration? any check engine light malfunction displayed in cluster after putting the vehicle in a couple of drive cycles?
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#8
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why would you change out the factory oem ignition coils? i highly doubt splitfire makes a better ignition coil then whats supplied by nissan/infiniti. as for your posted video its hard to distinguish what is going on with your car other then engine rpm fluctuation while under slow acceleration.
does your engine idle ok in park or neutral? does the engine want to stall out during acceleration? any check engine light malfunction displayed in cluster after putting the vehicle in a couple of drive cycles?
does your engine idle ok in park or neutral? does the engine want to stall out during acceleration? any check engine light malfunction displayed in cluster after putting the vehicle in a couple of drive cycles?
Everything is all good and smooth after about 5 minutes of driving. The jerk only happens in the first 2-3 minutes of driving after starting from dead cold.
Nope, no lights has ever came up on my dash .
#9
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I agree with you about using Nissan coil packs. This is one of those things best left OEM. And the OP's car is a 2007 G35... so 7 going on 8 years old. It's not a bad idea to replace the coilpacks at that age, IMO. But I would do it with factory coil packs.
#10
nissan/infiniti ignition coil packs were made by hitachi before but i have no idea who makes them for nissan now. hitachi ignition coils are freaking solid. the smart thing to do is when you replace the spark plugs for the engine to also replace the coil boots. the coil boots can be ordered and replaced by themselves without replacing the entire coil pack. the ignition coil boots tend to burn out or short due to age and exposure to heat in the cylinder head. if i was the original poster of this post i would first swap the oem ignition coils back into the car and drive to see if engine mapping changes to how the car originally operated.
#11
I thought this was the seat and headrest in my car but I don't think it is I think it's the seatbelt. My seatbelt bracket was in the bottom position on that side of car and when my brother got in car and lifted it to the upright position when he got out he kept it that way and ever since then the noise was gone.
#12
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I thought this was the seat and headrest in my car but I don't think it is I think it's the seatbelt. My seatbelt bracket was in the bottom position on that side of car and when my brother got in car and lifted it to the upright position when he got out he kept it that way and ever since then the noise was gone.
#13
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I have the same issue, especially at freeway speeds. It's like the resonant frequency of freeway vibrations PERFECTLY matches that of the seat. The seat will start vibrating/shaking pretty strongly. I have no idea what the fix is, but I'm getting my car serviced tomorrow, so I shall ask.
#14
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I have the same issue, especially at freeway speeds. It's like the resonant frequency of freeway vibrations PERFECTLY matches that of the seat. The seat will start vibrating/shaking pretty strongly. I have no idea what the fix is, but I'm getting my car serviced tomorrow, so I shall ask.
#15
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I finally got the chance to clean my throttle bodies, however my car still jerks like I explained on my very first post ? I cleaned my throttle bodies, MAF sensors (with CRC) and air filters, change the ignition coils back to OEM and did an ECU reset but still the same. Any other ideas ?
Thanks
Thanks