RPM spike when shifting from reverse to drive...help
01-30-14, 04:29 PM
#1
Rookie
Thread Starter
RPM spike when shifting from reverse to drive...help
Has anyone experienced this? Car has 150 miles on it . When I shift the car into reverse it engages fine, but when I then shift from reverse to drive I get a 400-600 RPM spike and I can feel the load on my transmission for a split second before the RPMs drop back to the normal level. If I remove my foot off the brake too soon during the spike, the car will lurch forward quickly. I assume this is not normal. Car drives and shifts beautifully otherwise. Any thoughts guys??
01-30-14, 05:39 PM
#3
Does it do this all of the time or only when your car hasn't reached operating temperature, yet?
My guess is if you try this when your car is actually at operating temperature (the temp gage is about in the middle) the car doesn't do this. Your RPM's are higher on cold mornings until the car is warm.
My guess is if you try this when your car is actually at operating temperature (the temp gage is about in the middle) the car doesn't do this. Your RPM's are higher on cold mornings until the car is warm.
Has anyone experienced this? Car has 150 miles on it . When I shift the car into reverse it engages fine, but when I then shift from reverse to drive I get a 400-600 RPM spike and I can feel the load on my transmission for a split second before the RPMs drop back to the normal level. If I remove my foot off the brake too soon during the spike, the car will lurch forward quickly. I assume this is not normal. Car drives and shifts beautifully otherwise. Any thoughts guys??
01-30-14, 05:49 PM
#4
The pursuit of F
Does it do this all of the time or only when your car hasn't reached operating temperature, yet?
My guess is if you try this when your car is actually at operating temperature (the temp gage is about in the middle) the car doesn't do this. Your RPM's are higher on cold mornings until the car is warm.
My guess is if you try this when your car is actually at operating temperature (the temp gage is about in the middle) the car doesn't do this. Your RPM's are higher on cold mornings until the car is warm.
I agree, and if you have the HVAC on while car is not at operating temp, an rpm spike will occur. You can reproduce this by turning the fan on , then off.
01-30-14, 06:40 PM
#5
Rookie
Thread Starter
Does it do this all of the time or only when your car hasn't reached operating temperature, yet?
My guess is if you try this when your car is actually at operating temperature (the temp gage is about in the middle) the car doesn't do this. Your RPM's are higher on cold mornings until the car is warm.
My guess is if you try this when your car is actually at operating temperature (the temp gage is about in the middle) the car doesn't do this. Your RPM's are higher on cold mornings until the car is warm.
01-30-14, 07:44 PM
#6
For a warmed up car that's totally normal as you're going from car being under load in R, to no load for a brief second till you shift into D, so it will have that jerk when the engine is connected to the car again. Every car has that, some more than others depending on several factors. Also, just a suggestion...But I see a lot of people reverse their cars, then, before it even fully stops, they throw it into Drive, and drive off. I was told that it doesn't hurt the car, but I was also told that there is no need to warm up cars anymore and no point breaking them in when they are new. It's all just bs. I still do it old school. So I recommend when you reverse, stop fully, then shift to D while still pressing your breaks, then once you feel it engaged and ready, you can press gas. It'll be a much smoother overall transition, especially when it's cold.
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