Brake and loose RPM
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Cadillac XLR Forum Discussion, Brake and loose RPM in Past Cadillac Vehicle Discussion; My dealer told me that it is standard for the XLR's RPM to go to idel whenever steping on the ...
  1. #1
    GaryXLR is offline Cadillac Owners Member
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    UnhappyBrake and loose RPM

    My dealer told me that it is standard for the XLR's RPM to go to idel whenever steping on the brake. I find that I have to completely rely on my brakes even traveling down the mountain with no engine compression to assist. Is this true?


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  3. #2
    Vrocks's Avatar
    Vrocks is offline Cadillac Owners Connoisseur
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    PostRe: Brake and loose RPM

    Quote Originally Posted by GaryXLR
    My dealer told me that it is standard for the XLR's RPM to go to idel whenever steping on the brake. I find that I have to completely rely on my brakes even traveling down the mountain with no engine compression to assist. Is this true?
    Not mine. The car has a lot of engine braking when I'm going down hill, or when I'm comming to stop. If you're going down a mountain move the shifter into manual mode and put it in 3rd gear, if things are working correctly the torque converter will stay engaged.

  4. #3
    harryctsv is offline Banned
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    Re: Brake and loose RPM

    Quote Originally Posted by Vrocks
    Not mine. The car has a lot of engine braking when I'm going down hill, or when I'm comming to stop. If you're going down a mountain move the shifter into manual mode and put it in 3rd gear, if things are working correctly the torque converter will stay engaged.
    Hi Vrocks,
    yours too, I did the same as you, never recognized it when I had my stock exhaust on but since I have my Corsa on you feel it.

    Do one easy thing, drive about 60 or 70 miles than just touch the brake a little and you see your tachometer goes from about 1500 - 1600 rpm down to about 1000 - 1100.
    Now you know I used to drive my car fast on the Autobahn and when you have to brake with 240 kph (150 mph) or 260 kph (162 mph) you even get some motor-braking than. This car got a realy smart transmission!

    Have a nice weekend
    Harry

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  6. #4
    GaryXLR is offline Cadillac Owners Member
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    Re: Brake and loose RPM

    I took a test drive with my service manager and showed him how my RPM drops off in 5th and 4th gears. He showed me what to do and now I use the manual shift for stopping fast using the compression of the engine. 3rd and 4th gears can hold onto the engine compression with breaking by pulling first down a gear and then breaking (not the opposite). I have a very deep sounding after market exhaust system and when I touch the break and then loose my RPM it sounds terrible.

  7. #5
    Blackhawk131's Avatar
    Blackhawk131 is offline Cadillac Owners Member
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    Re: Brake and loose RPM

    1

  8. #6
    ewill3rd is offline Cadillac Technician
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    Re: Brake and loose RPM

    Many transmissions don't offer engine braking in overdrive range.
    Usually shifting to a manual gear range will give you engine braking though.
    It's all up to the engineers as to which manual ranges have engine braking.
    The rule I use is... if it's not enough, go down another gear.

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