Diagnosing an issue....need help.
#1
Diagnosing an issue....need help.
Hi,
Just wanted to state one thing before i get into the issue, I'm in no way a car expert. So advice in simple terms would be much appreciated.
I have a 2003 G35 Sedan Automatic. Have about 210,000 kms on it.
About 2 days ago I started noticing that the car wasn't shifting too well. It was holding all the gears longer. The gears wouldn't shift as quickly as they usually do. I mean at about 120 km/h speed the engine would be revving as high as 5000 rpms.
Tonight, on my way home the car suddenly wouldn't pick up any speed at all. I was luckily coming downhill so got out of the way of traffic. But it would rev, but wouldn't pick up speed at all. And if i pushed the gas a bit too much, the whole car would shudder.
I tried to put it in the manual mode, but the car display still said "D".
Eventually when i got home i turned the car off and then started it again. The "AT CHECK" light flashed a few times and then turned off. I tried to shift the car to manual mode again and it worked fine.
I didn't try to drive it again cause I'm afraid I might be messing something up.
Anyone have any idea as to what might have gone wrong?? I've heard the word "transmission" being mentioned when i spoke with a friend and it's got me sweating buckets cause i know transmissions issues are VERY expensive to fix.
I even read about a Throttle body problem on these forums, but not sure if my issue is the same.
Any insight/help would be greatly appreciated!!
Thanks in advance!
Just wanted to state one thing before i get into the issue, I'm in no way a car expert. So advice in simple terms would be much appreciated.
I have a 2003 G35 Sedan Automatic. Have about 210,000 kms on it.
About 2 days ago I started noticing that the car wasn't shifting too well. It was holding all the gears longer. The gears wouldn't shift as quickly as they usually do. I mean at about 120 km/h speed the engine would be revving as high as 5000 rpms.
Tonight, on my way home the car suddenly wouldn't pick up any speed at all. I was luckily coming downhill so got out of the way of traffic. But it would rev, but wouldn't pick up speed at all. And if i pushed the gas a bit too much, the whole car would shudder.
I tried to put it in the manual mode, but the car display still said "D".
Eventually when i got home i turned the car off and then started it again. The "AT CHECK" light flashed a few times and then turned off. I tried to shift the car to manual mode again and it worked fine.
I didn't try to drive it again cause I'm afraid I might be messing something up.
Anyone have any idea as to what might have gone wrong?? I've heard the word "transmission" being mentioned when i spoke with a friend and it's got me sweating buckets cause i know transmissions issues are VERY expensive to fix.
I even read about a Throttle body problem on these forums, but not sure if my issue is the same.
Any insight/help would be greatly appreciated!!
Thanks in advance!
Last edited by TheNewGuy; 12-18-2010 at 01:27 AM.
#6
Should be on the receipt, but since it was done at the dealer most likely it was Matic-S(replacement for matic J) which is the correct fluid.
When the AT light turns on, does it store the code?
Something does sound fishy with the Transmission, do some searching on this site and see if anyone had these issues.
Sorry I could not help more, Good luck!
When the AT light turns on, does it store the code?
Something does sound fishy with the Transmission, do some searching on this site and see if anyone had these issues.
Sorry I could not help more, Good luck!
#7
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#13
So after doing a bit of reading I have come up with some explanation.
The complete failure that happened last night was a "fail safe" lock system and it locked the last gear it was in which I'm guessing was 2nd. After turning the car off and then on, the fail safe disengaged and the car was picking up speed as before.
I still have to find the main problem. Hopefully it's something smaller like "reprogramming the transmission control module" but that's just a hope.
Will find out on Tuesday what I'm gonna get hosed for!!
The complete failure that happened last night was a "fail safe" lock system and it locked the last gear it was in which I'm guessing was 2nd. After turning the car off and then on, the fail safe disengaged and the car was picking up speed as before.
I still have to find the main problem. Hopefully it's something smaller like "reprogramming the transmission control module" but that's just a hope.
Will find out on Tuesday what I'm gonna get hosed for!!
#15