When running cruise control works fine. But I can't idle up. This is happening after super 10 speed transmission swapped to 13 speed. No codes. Nothing.
Any idea? Thanks!
Roman
Freightliner Century 1999 I can't idle up......
Discussion in 'Freightliner Forum' started by PupaINC, Jul 3, 2020.
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If there is an issue with your parking brake switch it will not idle up.
Or if you forget to apply the parking brake it won’t idle upPupaINC, QUALITYTRUCK and jamespmack Thank this. -
^^^^ he is more than likely correct.
Just gonna add, if it has optimized idle option from factory. It has a mercury switch on the hood. It tells ecm that hood is closed for automatic start. Its 2 wire and you can jump it with a paperclip.
I just can imagine a 1999 with opt idle parts still on the truck. But it's possible.650cat425, blairandgretchen, PupaINC and 1 other person Thank this. -
jamespmack Thanks this.
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You need to get a prolink and plug in and see what sensor isn't communicating. There are like 6 sensor idk. Last time I really work on opt idle was 2005. Trying to recall everything.650cat425, blairandgretchen and PupaINC Thank this. -
Does it have 1 speed sensor but two plug and 4 wires in sensor?
Try switching plugs. Seem to recall this happening after someone would do a clutch job and mix up plugs.650cat425 Thanks this. -
Did the opti idle have a neutral safety switch on the old transmission - ?
650cat425 and jamespmack Thank this. -
I forgot about that one. Not at home. I cant pull out my dusty detroit bibles.
How you been Sir? Hope all is well.650cat425 and blairandgretchen Thank this. -
I don’t know about safety switch. But harness to the old transmission had 4 connections and this one rtlo18913a only 2. So we didn’t connect solenoid harness (3 wires) and some 2 wires connector.
Old transmission was
FRO16210C
We did try to switch connectors. Thank You for helping!650cat425 and blairandgretchen Thank this. -
650cat425 and jamespmack Thank this.
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