Hi guys looking for some help again please... gone to start her up and just got a really lumpy idle.... tried to drive and she was just really hesitant and lumpy... worse... when I tried to apply the brake the pedal was solid ! I had no brakes !!. The strangest part is once I pulled over and turned her off for 5 mins I started her up again and she was fine! No lumpy idle and drove like a dream again!!! ..I'm baffled !?..  I have seen maf sensors can cause a lumpy idle but no brakes !????.. any help would be much appreciated... thank you 🙏

With the brakes being affected, I would be looking for a split vacuum pipe 

Thankyou... I am seeing this as I'm looking In to it... brake booster pipe fails too apparently that can cause it 

there is a "y" plastic pipe valve in the vacuum line to the servo that can hairline crack in the valley of the y, might be worth giving it a check

Edited 13 June, 20223 yr by kentphil1

10 hours ago, Okvrsmk1 said:

when I tried to apply the brake the pedal was solid ! I had no brakes !!

Like others, I am thinking of vacuum lines. Particularly the ones with external fabric armour, because the rubber under the fabric can collapse and fail without any visible evidence.

Thanks all... Will be getting it looked at today... hopefully its an easy one to find 🙏