Is my exhaust brake broken?

[Radshooter]

I've been using it on the freeways to and from work like several of you suggested in another post last week. When I got to work tonight, I turned it off when I pulled into the parking lot (I work at a hospital and try to come and go quietly as possible). After I got parked, I turned it back on (don't know why, just did), and I didn't hear the usual hissing or burble sounds anymore. Clicked it on and off a few times, but still no hissing like when you use it for warmups. I didn't have time to drive it any farther to see if that made a difference. In the past, it activates whether I am moving or not. Oh well. I guess I will find out when I drive home in the morning.



Steve

 

[GFrance]

Check the micro switch that is connected to the go pedal. Should be a spring steel rod that deactivates the brake when the switch is on & you step on the throttle pedal. Mine has gotten bent by mashing to hard on the pedal. I just turn on the exhaust brake switch & bend the rod until I here the hissing of the brake & set it so it goes off when you litely step on the pedal.

 

[Radshooter]

Thanks GFrance. I'll take a look at it when I get home if I can stay awake long enough. These 12 hour night shifts can get pretty tiring after awhile.



Steve

 

[J&LRam]

Steve

they are temperature controlled. When mine is at operating temp and at idle[parked] it will not come on. It will also shut off after stopping at a light and idles for a few seconds ... ..... JIM

 

[klenger]

What Jim said.

 

[Radshooter]

Thanks guys... . it worked fine when I got in to go home this morning. I guess the 12 hour cooldown helped. I hadn't thought about the temp situation. Guess I never tried it at hot idle before. Thanks to all who suggested using it on the freeway in traffic. It helps a lot with these crazy drivers that can't look past the hood of their cars and anticipate something happening 1/4 mile ahead of them.



Thanks again...

Steve

 

[claymike]

The brake stays on until the engine temp reaches 170 degrees then it will shut off when you are not moving.

 

[RMcCulloch]

Check the micro switch that is connected to the go pedal. Should be a spring steel rod that deactivates the brake when the switch is on & you step on the throttle pedal. Mine has gotten bent by mashing to hard on the pedal. I just turn on the exhaust brake switch & bend the rod until I here the hissing of the brake & set it so it goes off when you litely step on the pedal.

The 3rd gen doesn't use the microswitch - it ties into the PCM/ECM wiring harness.



The best check on the EB is to try using it and then replicate the test with the switch off. If both tests result in the same slowing rate, you may need to check the connection to the wiring harness for corrosion.