Sluggish Startup and acceleration
#1
Sluggish Startup and acceleration
On Monday, my car started taking abnormally long to crank. It only takes one time but it takes awhile to turn over, it has done that all week, but only when 1st cranked in the morning after sitting for about 12 hours. Any other cranks during the day are normal. Also if I am sitting in a red light in the morning, the car feels like it wants to die. Once i'm going, I have figured out that the acceleration is extremely sluggish under 4k RPMs. This is apparent in all gears. once i get to 4k-5k RPMs the acceleration kicks like normal but as soon as I change gears and it drops, it's slower than normal to get back to where it was.
it is an 04 RX8 with 56k miles on it. Its original owner did not drive it much so I can only assume nothing has been replaced on it. prior to Monday, I had gotten the oil changed last tuesday. It drove fine Wednesday and Thursday. But it had sat idle from Friday to Monday morning.
it is an 04 RX8 with 56k miles on it. Its original owner did not drive it much so I can only assume nothing has been replaced on it. prior to Monday, I had gotten the oil changed last tuesday. It drove fine Wednesday and Thursday. But it had sat idle from Friday to Monday morning.
#3
no and no to the first questions....I wasnt sure if those would be the problem.
and what is the MAF?
also i forgot to include in the 1st post.. there have been no CELs
and what is the MAF?
also i forgot to include in the 1st post.. there have been no CELs
#5
I am THAT guy
iTrader: (1)
MAF = Mass Air Flow Sensor.
It's the little black box on top of the piping connecting your intake box to the intake manifold. Check and see if it's fastened all the way on. If it comes loose for whatever reason, it could mess up your idle greatly and even shut down your car. Also, be sure to check and see if it's dirty, that could also obstruct idle.
Definitely look into changing your wires and sparkplugs. If they've never been changed i wouldn't doubt it being the issue. On the spark plugs remember - brown: Not so bad - black: Bad. If you're also in there, be sure to check the coils (typically you can tell on the back)
there's some DIY's on this forum that'll explain how to check all these things and how to replace them - be sure to check em' out when you get a chance - it might end up saving you a lot of money.
It's the little black box on top of the piping connecting your intake box to the intake manifold. Check and see if it's fastened all the way on. If it comes loose for whatever reason, it could mess up your idle greatly and even shut down your car. Also, be sure to check and see if it's dirty, that could also obstruct idle.
Definitely look into changing your wires and sparkplugs. If they've never been changed i wouldn't doubt it being the issue. On the spark plugs remember - brown: Not so bad - black: Bad. If you're also in there, be sure to check the coils (typically you can tell on the back)
there's some DIY's on this forum that'll explain how to check all these things and how to replace them - be sure to check em' out when you get a chance - it might end up saving you a lot of money.
#8
For the MAF - which side am I looking under the car or under the hood? and which side of the car?
Ive had my 8 for about 3 years and this is the first issues ive had with it, so bare with my while i learn
and thanks for the help!
Ive had my 8 for about 3 years and this is the first issues ive had with it, so bare with my while i learn
and thanks for the help!
#15
Before he askes, https://www.rx8club.com/showthread.p...ight=clean+maf
#16
Before he askes, https://www.rx8club.com/showthread.p...ight=clean+maf
But thanks for saving me the trouble anyways.
#17
I was reading another thread and I thought of this.
I flooded my engine about 2 or 3 months ago, but after many times trying the emergency thing...it cranked.
however I never changed the spark plugs. could this almost verify that its going to be the plugs?
I flooded my engine about 2 or 3 months ago, but after many times trying the emergency thing...it cranked.
however I never changed the spark plugs. could this almost verify that its going to be the plugs?
#19
This does not verify 100% it is the plugs, although it wouldnt be a bad idea to change them. Long story short, same thing happened to me and I did not replace them and my car runs fine. How long have the plugs been on? How many miles? They may just need to be replaced. How many miles on the car? You may want to do coils/plugs/wires depending on the miles. Most people change these things(other than wires) yearly.
#20
I am THAT guy
iTrader: (1)
*Ahem*
MAF = Mass Air Flow Sensor.
Definitely look into changing your wires and sparkplugs. If they've never been changed i wouldn't doubt it being the issue. On the spark plugs remember - brown: Not so bad - black: Bad. If you're also in there, be sure to check the coils (typically you can tell on the back)
.
Definitely look into changing your wires and sparkplugs. If they've never been changed i wouldn't doubt it being the issue. On the spark plugs remember - brown: Not so bad - black: Bad. If you're also in there, be sure to check the coils (typically you can tell on the back)
.
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
#21
im thinking about checking my spark plugs later, im not sure when they were last replaced, may have been when I last flooded the engine and had to get towed about year ago. didn't not realize I should pay attention to this at the time.
However, I had a question if the type of Oil used could cause some of these issues. I know the place I go only keeps regular 10w30 in stock, generally, I've gone ahead and let them put that, then when it's time for a manual oil refill, I put the factory suggest oil in. I didnt want to admit this b/c i know its probably bad for the car.
I've decided to my oil change next time, as after reading the forum it doesnt look that hard.
but for now, (please without the public flaming of my stupidity) could the type of oil in there now create this issue? it actually started shortly after that oil change.
However, I had a question if the type of Oil used could cause some of these issues. I know the place I go only keeps regular 10w30 in stock, generally, I've gone ahead and let them put that, then when it's time for a manual oil refill, I put the factory suggest oil in. I didnt want to admit this b/c i know its probably bad for the car.
I've decided to my oil change next time, as after reading the forum it doesnt look that hard.
but for now, (please without the public flaming of my stupidity) could the type of oil in there now create this issue? it actually started shortly after that oil change.
#22
Modulated Moderator
iTrader: (3)
Won't be the oil this time of the year
Maybe in the middle of winter ![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
Is your car cranking at a normal speed..or does it seem slow?
Your battery may be crapping out.....when it sits for a while it looses charge...and when you have been driving it all day the voltage will be higher.....
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
Is your car cranking at a normal speed..or does it seem slow?
Your battery may be crapping out.....when it sits for a while it looses charge...and when you have been driving it all day the voltage will be higher.....
#25
Modulated Moderator
iTrader: (3)
And Alternator output...then starter..
If you have more than 30K miles on plugs or coils..bit the bullet and replace them too
It isn't unheard of that a new battery is faulty, so don't discount it as a source of your problem till you test it
Also check your cable connections from the battery....