So my ZX2 is doing a weird thing where while driving at any constant speed it will feel like the brakes are lightly pressed for about 2 seconds and it will do it 2-3 times a minute. I also have a vaccum or IACV leak i am pretty sure because it is not idling correctly but i am not certain these issues are related. Also i have a faint clunking when taking off from a stop, i believe this is a motor or trans mount and may or may not be related to the first issue (could also be a halfshaft but does not pop or click during turning so not likely). If anyone has insight to this issue or either of the other two any advice would be greatly appreciated. Parts I have replaced on the car: MAF sensor, Air filter, Spark plug, Oil change, Rear Right strut, front left lower ball joint. Exhaust is very rusted after the cat and rattles when driving, may be related to the clunking noise. other probably non related issues: lifter tick (180k miles so not unheard of), appears to have been in a front end collision at some point (bumper, headlights are loose and have broken tabs) The car is decently beat up and was not very well taken care of by the previous owners. but it does have a kamikaze exhaust header on it so at some point in time it was taken care of. If there is any other information needed please ask.