If "floored", won't go passed 50 or 60 mph.
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If "floored", won't go passed 50 or 60 mph.
I have a 1999 Honda Civic Sedan Automatic.
The car works fine but there is one wierd problem.
If I floor the gas pedal ("pedal to the metal"), the car will stay at 50 or 60 (I don't remember) with high rpm UNTIL I let go of the gas & do it again then it works. Now if I were to 1%-90% pedal pressed down it would go passed 50 or 60& the rpm would go back down quick (car would work as normal).
Why is that? People tell me its electrical & dashboard related, & I'm like really? Feels like air problem. I don't know help me out. :-)
The car works fine but there is one wierd problem.
If I floor the gas pedal ("pedal to the metal"), the car will stay at 50 or 60 (I don't remember) with high rpm UNTIL I let go of the gas & do it again then it works. Now if I were to 1%-90% pedal pressed down it would go passed 50 or 60& the rpm would go back down quick (car would work as normal).
Why is that? People tell me its electrical & dashboard related, & I'm like really? Feels like air problem. I don't know help me out. :-)
Last edited by mystic17x; Sep 6, 2012 at 08:05 AM. Reason: adding more info
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Re: If "floored", won't go passed 50 or 60 mph.
only thing i can think of is the car ecu uses a different hard wired fuel map at full throttle vs anything below that. possibly the program is damaged.
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Weird problem...have you noticed it getting worse as time goes by? For instance, does your car seem to be reaching a lower and lower max speed as the weeks go by? If so, it sounds like you have a clogged cat.
Re: If "floored", won't go passed 50 or 60 mph.
Try flushing the tranny fluid...could be a clogged fluid passage. If not, then it could be what gearbox said...the ecu could be getting the wrong signal from a sensor, or the mapping is somehow corrupted.
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If you're actually getting the high rpm's but the mainshaft on the transmission is not turning at the higher rpm, then it seems like you would get the dreaded P0740 code (difference of greater than 200 rpm between crankshaft and mainshaft with lockup clutch engaged).
If there is some sort of time required before the code above is indicated by the ECU, I would say it sounds like your lockup clutch is slipping when it receives high torque from the crank, but it's not seeing it long enough to throw the code.
Of course, the torque converter would still be turning so it's weird that it won't accelerate.
If there is some sort of time required before the code above is indicated by the ECU, I would say it sounds like your lockup clutch is slipping when it receives high torque from the crank, but it's not seeing it long enough to throw the code.
Of course, the torque converter would still be turning so it's weird that it won't accelerate.
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No, it's been doing the samething every since I got it a year ago. :-(
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Here is some more info:
The CEL is on but the D4 is not flashing.
I think & I don't remember exactly but if I pedal to the medal & it's on 50 or 60 mph, I think the CEL will start flashen. I think that the CEL turned off too right after & then came back on later. I'm not sure tho. I don't think the CEL was on before when I first got the car, but it always couldn't go past 50 or 60when floored. That's when I started to see CEL.
This car was involved in a crash on the driver side engine bay, until the body shop folks fixed it.
Thanks, anymore info, questions, keep em coming. Thanks.
The CEL is on but the D4 is not flashing.
I think & I don't remember exactly but if I pedal to the medal & it's on 50 or 60 mph, I think the CEL will start flashen. I think that the CEL turned off too right after & then came back on later. I'm not sure tho. I don't think the CEL was on before when I first got the car, but it always couldn't go past 50 or 60when floored. That's when I started to see CEL.
This car was involved in a crash on the driver side engine bay, until the body shop folks fixed it.
Thanks, anymore info, questions, keep em coming. Thanks.
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not sure if related, but my old 01 auto did similar during a long uphill. all was good until i got behind slower vehicles in both lanes. after i got slowed down, i pushed the throttle and it shifted down, kept lower gear all the way up - refused to shift to a higher gear...
maybe related sensor?
that was one of the reasons i don't have that car anymore and now have a manual....
maybe related sensor?
that was one of the reasons i don't have that car anymore and now have a manual....
Last edited by sdaidoji; Sep 6, 2012 at 10:53 PM. Reason: corrected from down to up...
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If you're actually getting the high rpm's but the mainshaft on the transmission is not turning at the higher rpm, then it seems like you would get the dreaded P0740 code (difference of greater than 200 rpm between crankshaft and mainshaft with lockup clutch engaged).
If there is some sort of time required before the code above is indicated by the ECU, I would say it sounds like your lockup clutch is slipping when it receives high torque from the crank, but it's not seeing it long enough to throw the code.
Of course, the torque converter would still be turning so it's weird that it won't accelerate.
If there is some sort of time required before the code above is indicated by the ECU, I would say it sounds like your lockup clutch is slipping when it receives high torque from the crank, but it's not seeing it long enough to throw the code.
Of course, the torque converter would still be turning so it's weird that it won't accelerate.
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not sure if related, but my old 01 auto did similar during a long uphill. all was good until i got behind slower vehicles in both lanes. after i got slowed down, i pushed the throttle and it shifted down, kept lower gear all the way down - refused to shift to a higher gear...
maybe related sensor?
that was one of the reasons i don't have that car anymore and now have a manual....
maybe related sensor?
that was one of the reasons i don't have that car anymore and now have a manual....
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check the engine code first. if the light is flashing, you are damaging the engine due to knocking or misfires. also it could be unrelated because if the CEL is on, the ecu goes into a different conservative tune and shift pattern to keep you from destroying the motor. when i had a cel for vtec malfunction, i couldnt go past 4k rpms and the shifts were very slow and lagging. cleared the code (without fixing the problem), and so long as the light stayed off the car drove normally. so get the light checked and fixed then see what happens.
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check the engine code first. if the light is flashing, you are damaging the engine due to knocking or misfires. also it could be unrelated because if the CEL is on, the ecu goes into a different conservative tune and shift pattern to keep you from destroying the motor. when i had a cel for vtec malfunction, i couldnt go past 4k rpms and the shifts were very slow and lagging. cleared the code (without fixing the problem), and so long as the light stayed off the car drove normally. so get the light checked and fixed then see what happens.
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