Car seems to rev up / stutter when slowing down/braking
#1
Car seems to rev up / stutter when slowing down/braking
A month ago I purchased an 07 G35x. After a few weeks the engine seems to rev up/stutter when slowing down or braking. I purchased it from a small dealer without warranty. I did purchase an additional warranty 5yrs / 100k, but doesn’t kick in for another 2 months. Anyway, the engine revs/stutters a little when slowing down or braking. After I purchased it, I automatically did an oil change w/ filter, changed air filters and cabin filter… still no change. So then I cleaned the throttle body for good measure… and again the rev/stutter is still there. I just reset the ECU and rev/stutter is still there. Has this happened to anyone else? Can someone please help? I’m out of ideas on what I can do to fix it.
I appreciate any and all feedback.
I appreciate any and all feedback.
#3
A month ago I purchased an 07 G35x. After a few weeks the engine seems to rev up/stutter when slowing down or braking. I purchased it from a small dealer without warranty. I did purchase an additional warranty 5yrs / 100k, but doesn’t kick in for another 2 months. Anyway, the engine revs/stutters a little when slowing down or braking. After I purchased it, I automatically did an oil change w/ filter, changed air filters and cabin filter… still no change. So then I cleaned the throttle body for good measure… and again the rev/stutter is still there. I just reset the ECU and rev/stutter is still there. Has this happened to anyone else? Can someone please help? I’m out of ideas on what I can do to fix it.
I appreciate any and all feedback.
I appreciate any and all feedback.
Anyways, when you do slow down and brake, engine does rev up and uses the "engine braking" feature to slow the car down. I'm not sure how bad yours is, but it does that sometimes with my G.
#4
I might have the same problem that you are talking about OP. Lets say i am stopped at a red light wanting to make a right turn, as the light turns green, i step on the gas to make the turn and a pedestrian wants to cross and i need to brake, i then immediately feel the car shudder/hesitates and the car Rpm's rev up and down and then back to normal. Sometimes however, the car would shut down and i would then need to park, and start the car again and all is fine. I have done all the recommendations noted above to no help. Only thing i haven't done is changing the transmission fluid which i will be doing at 120k miles, im currently at 112k. Everything else with the car is perfectly fine and still runs like new (knocks on wood). Hope someone can chime in on this.
#5
I might have the same problem that you are talking about OP. Lets say i am stopped at a red light wanting to make a right turn, as the light turns green, i step on the gas to make the turn and a pedestrian wants to cross and i need to brake, i then immediately feel the car shudder/hesitates and the car Rpm's rev up and down and then back to normal. Sometimes however, the car would shut down and i would then need to park, and start the car again and all is fine. I have done all the recommendations noted above to no help. Only thing i haven't done is changing the transmission fluid which i will be doing at 120k miles, im currently at 112k. Everything else with the car is perfectly fine and still runs like new (knocks on wood). Hope someone can chime in on this.
#6
#7
What is this additional warranty 5 yrs/100k miles you have? Why doesn't it kick in or another 2 months? Is this a third party warranty, because it seems like it. How many miles are on the car?
Anyways, when you do slow down and brake, engine does rev up and uses the "engine braking" feature to slow the car down. I'm not sure how bad yours is, but it does that sometimes with my G.
Anyways, when you do slow down and brake, engine does rev up and uses the "engine braking" feature to slow the car down. I'm not sure how bad yours is, but it does that sometimes with my G.
I'm about to hit the 73k miles mark.
Last edited by G35xDave07; 10-14-2013 at 10:35 PM.
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#8
I just changed the PCV valve today... it runs better, but the issue is still there. I'm going to do what VGSMILE suggested and clean the MAFs and check the tranny oil. You'd figure that they would check the tranny fluid level when doing an oil change, but you never know. For those of you who care, I will post my results within a day or two.
#9
It is a 3rd party warranty that covers bumper to bumper, engine, electrical and all that good stuff. The downside is waiting the 3 months... I get the waiting period, but don't like it. Either way, these cars are expensive to pay for repairs out of pocket so I figured why not.
I'm about to hit the 73k miles mark.
I'm about to hit the 73k miles mark.
I looked at extended warranty bumper to bumper coverage and they seem to be over $2k. The problem is I believe most of them need you to provide proof that you were maintaining your car through receipts from mechanics detailing the maintenance, or otherwise they deny your claim. Be sure to check your policy, because it is much harder with a used car when the seller has no maintenance records. Third party extended warranty insurance is known to easily deny claims or hold out on payment or try to find loopholes. Your problem actually may sound like a transmission issue, which would cost thousands to fix. They may require you to provide them with service records proving that the transmission was serviced at regular intervals.
Also, it sets off a red flag if you make a claim right when your policy starts. The reason for this "waiting" period is to make sure your car was actually in good condition with no problems to deter insurance fraud.
Last edited by mathnerd88; 10-15-2013 at 02:08 AM.
#10
#13
I bought my car at 87k miles and will be doing a full service to the car at 120k. I already serviced the majority of the basics when i first got it, but didnt change the transmission oil yet. Will do a drain and fill soon.