Bad hesitation shifting between gears
#1
Senior Member
Thread Starter
Bad hesitation shifting between gears
And it's seems to be getting worse.
On toruqe app I can see the timing going from normal to like single digits or even -6 or around there sometimes.
It bucks when it does this. Very annoying. I know the torque management does this but should it do it that much?
It runs smooth when the car is cold like when it's in open loop....
Lead sme to believe it's some sensor. I've cleaned the tb and maf and new plugs
Anything else in in torque I could use to debug it?
It's really annoying me. Maybe primary o2 sensor??? Map?? Something...
On toruqe app I can see the timing going from normal to like single digits or even -6 or around there sometimes.
It bucks when it does this. Very annoying. I know the torque management does this but should it do it that much?
It runs smooth when the car is cold like when it's in open loop....
Lead sme to believe it's some sensor. I've cleaned the tb and maf and new plugs
Anything else in in torque I could use to debug it?
It's really annoying me. Maybe primary o2 sensor??? Map?? Something...
#6
Senior Member
Thread Starter
Wish it had a wideband in the primary stock. It's a narrow band and just by watching the voltage it's running rich all the time. 10-11:1 but a narrow band isn't reliable :/
If it had a wideband it would def give me a lot of insight. It loses some pep it feels like when it enters closed loop. When it cold it feels pepper and not just because of cooler air... Just crusiing the exhaust is deeper and feels better part throttle. I might just throw a new o2 in there to see if it helps a narrow band shouldn't be expensive.
If it had a wideband it would def give me a lot of insight. It loses some pep it feels like when it enters closed loop. When it cold it feels pepper and not just because of cooler air... Just crusiing the exhaust is deeper and feels better part throttle. I might just throw a new o2 in there to see if it helps a narrow band shouldn't be expensive.
#10
Senior Member
Keep throwing parts at it.
You'll fix it eventually. Right?
I get people trying to save some money by working on their own cars but the majority would be way better off paying a professional.
Source - Autobody tech that's seen some DIY ****.
You'll fix it eventually. Right?
I get people trying to save some money by working on their own cars but the majority would be way better off paying a professional.
Source - Autobody tech that's seen some DIY ****.
#12
Senior Member
iTrader: (1)
Putting on a new fuel filter isn't really a bad idea as it is a cheap easy thing to do and it can only help. I would think if fuel delivery was your problem you would lean out and lose power in the upper RPM range. I know you mentioned you had an OBD scanner that works with your phone. Have you checked the long term and short term fuel trims?
#14
Senior Member
Thread Starter
car runs well except for this little issue. idles perfectly at ~800rpm
it seems to do this hesitaton between shifts and bogging when its very hot. it was ~100f here last couple of days and city driving in the heat is where i feel it the most.
really annoys me, i'm used to driving ls (4th gen) v8 cars and they run smooth as glass all the time... even with 200k miles.
my old man's 1999 197k mile ls1 camaro runs smoother than my 07 cobalt. some of that is just because its a 4banger but seriously it shouldn't have all these studders and ****
it seems to do this hesitaton between shifts and bogging when its very hot. it was ~100f here last couple of days and city driving in the heat is where i feel it the most.
really annoys me, i'm used to driving ls (4th gen) v8 cars and they run smooth as glass all the time... even with 200k miles.
my old man's 1999 197k mile ls1 camaro runs smoother than my 07 cobalt. some of that is just because its a 4banger but seriously it shouldn't have all these studders and ****
#15
Senior Member
car runs well except for this little issue. idles perfectly at ~800rpm
it seems to do this hesitaton between shifts and bogging when its very hot. it was ~100f here last couple of days and city driving in the heat is where i feel it the most.
really annoys me, i'm used to driving ls (4th gen) v8 cars and they run smooth as glass all the time... even with 200k miles.
my old man's 1999 197k mile ls1 camaro runs smoother than my 07 cobalt. some of that is just because its a 4banger but seriously it shouldn't have all these studders and ****
it seems to do this hesitaton between shifts and bogging when its very hot. it was ~100f here last couple of days and city driving in the heat is where i feel it the most.
really annoys me, i'm used to driving ls (4th gen) v8 cars and they run smooth as glass all the time... even with 200k miles.
my old man's 1999 197k mile ls1 camaro runs smoother than my 07 cobalt. some of that is just because its a 4banger but seriously it shouldn't have all these studders and ****
Have you tried cleaning your maf? I had a small misfire around 3000rpms with light throttle. Ended up just being oil from my Filter on my maf.
#16
Senior Member
Thread Starter
i did clean the maf with some maf cleaner.
the air filter on it is pretty old... and shitty i have a new one i guess i should try and put it on and see what happens.
#18
Senior Member
Thread Starter
the vac on the gauge looks normal to me and it never fluctuates.
#20
Senior Member
Thread Starter
#24
Senior Member
Thread Starter
Eh was doing it a lot less but kinda still.... But it completely shut off driving down the road won't start...
Won't start no spark... Can't get sensor until Tuesday ug
Won't start no spark... Can't get sensor until Tuesday ug
Last edited by Johnny Bliss; 09-15-2017 at 02:27 PM.