Throttle: intermittent issue.
#1
Throttle: intermittent issue.
Hey guys,
this problem started not long time ago.
to give u an idea about the car, it's a 5AT modified with SC and built engine and couple of supporting mods.
"sometimes", when i start the car, put it on Drive or Reverse, the car won't accelerate past 1,250rpm, not even when i floor the pedal. When i put it on Neutral or Park, the car revs just fine... i also noticed when this condition happens, the AFR goes rich (for some odd reason).
sometimes, the car goes into this mode for a minute then poff, gone, then drives fine as if the issue wasn't even there.. sometimes it's like this for a whole day or 2.. sometimes it's a whole week or 2 without this issue.
Another thing i've noticed, when cranking, sometimes it starts the engine and throws "TCS OFF" CEL.. but that does is not link it to the issue directly.. i mean, when "TCS OFF" comes on it doesn't mean there won't be any acceleration. it might be related somehow, but it's not a direct cause.
This issue does not throw any codes (DTC), and when i took it to the dealership, they refused to work on it for 2 reasons.. 1 being it a modified car, 2 there are no DTCs.
any ideas? ppl with similar issue?
this problem started not long time ago.
to give u an idea about the car, it's a 5AT modified with SC and built engine and couple of supporting mods.
"sometimes", when i start the car, put it on Drive or Reverse, the car won't accelerate past 1,250rpm, not even when i floor the pedal. When i put it on Neutral or Park, the car revs just fine... i also noticed when this condition happens, the AFR goes rich (for some odd reason).
sometimes, the car goes into this mode for a minute then poff, gone, then drives fine as if the issue wasn't even there.. sometimes it's like this for a whole day or 2.. sometimes it's a whole week or 2 without this issue.
Another thing i've noticed, when cranking, sometimes it starts the engine and throws "TCS OFF" CEL.. but that does is not link it to the issue directly.. i mean, when "TCS OFF" comes on it doesn't mean there won't be any acceleration. it might be related somehow, but it's not a direct cause.
This issue does not throw any codes (DTC), and when i took it to the dealership, they refused to work on it for 2 reasons.. 1 being it a modified car, 2 there are no DTCs.
any ideas? ppl with similar issue?
#4
350Z-holic
iTrader: (34)
I'm assuming you checked the electrical connections for the A/F sensors?
I would get the car up on a lift and check the wiring/sensor on the trans that registers what gear you are in. I would also just unplug the TB next time it happens, then plug it back in and see if that fixes it. I had a similar issue with my TB and it was just a bad connection, but the car stayed in limp mode all the time.
I would get the car up on a lift and check the wiring/sensor on the trans that registers what gear you are in. I would also just unplug the TB next time it happens, then plug it back in and see if that fixes it. I had a similar issue with my TB and it was just a bad connection, but the car stayed in limp mode all the time.
#6
nope, and i've read about them.. unbelievably cheap!
I'm assuming you checked the electrical connections for the A/F sensors?
I would get the car up on a lift and check the wiring/sensor on the trans that registers what gear you are in. I would also just unplug the TB next time it happens, then plug it back in and see if that fixes it. I had a similar issue with my TB and it was just a bad connection, but the car stayed in limp mode all the time.
I would get the car up on a lift and check the wiring/sensor on the trans that registers what gear you are in. I would also just unplug the TB next time it happens, then plug it back in and see if that fixes it. I had a similar issue with my TB and it was just a bad connection, but the car stayed in limp mode all the time.
Thanks
i wish it was that easy to figure out really. but the whole car needs to be checked to eliminate the possibilities.
thanks for the input guys, any more ideas?
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