I have a an old 1990 toyota 2wd pickup 22re without Anti Lock Brakes. My yota runs great. I do have one issue though, when I am pressing the brake to stop my engine revs itself, almost like it bogs down and then corrects itself. Like "vvvvv .... vvvvv.... vvvv...vvvv.....vvvvv" if that description makes any sense.



Also, on a different subject, I just started hearing a noise coming from what sounds to be one of the pulleys on the belt system. To describe that noise it sounds like sand in the bearings. What is the best way to troubleshoot which pulley it is? Over all the engine is noisy and it is hard to tell which one it is.

Thanks!!!!!!!!!

 

I wonder if the brake booster has a vacuum leak in it?

 

Engine surging when brakes applied is usually from too high a idle rpm.

Could be simply mis adjusted or vacuum leak.


How many can belts are on the truck? Could remove one at a time to see which accessory is the fault.

 

It was the tensioner pulley. Couldn't find a correct replacement for whole pulley at auto stores so I removed the bearing inside that was seized up and replaced with a new one, perfect fit! Got new belts and good to go!
Thanks.

 

Good idea. Ill have to look at a service manual to check!
Thanks

Also my rear brakes have never worked, I need to take to a shop or something because I have no idea where to begin on that issue!!!