condor74
Full Access Member
Ok the truck has been running great. With an old truck of course you have a few issues from time to time.
Here is the issue. The pedal is hard. It takes both feet to bring it to a stop some times. If you are driving down the road and hit the brakes, you have power assist. If you lift off the brake and then lean on it again the pedal is rock hard. I have already replaced the brake booster. It did improve it a little but still has an issue.
It seems that the problem is the vacuum pump. It seems so obvious now, I dont know why I didnt catch it before. I was thinking of when this started and it was a couple of months ago. I had just pulled the truck out of the back yard and was getting it running again. It now has a new transmission, new radiator, and while I was in there, I noticed that there was metal bracket with a pulley on it that was not stock and was vibrating and rattling. It was attached to the alternator bracket and was putting just a little bit of tension on the belt that runs from the alternator to the vacuum pump. I removed the added on tensioner and tightened the belts up. That is when the problem started. I am thinking of loosening the belt to the vacuum pump to see if it can build vacuum again.
Anyway. For the long term it looks like I will be buying a new vacuum pump....
Here is the issue. The pedal is hard. It takes both feet to bring it to a stop some times. If you are driving down the road and hit the brakes, you have power assist. If you lift off the brake and then lean on it again the pedal is rock hard. I have already replaced the brake booster. It did improve it a little but still has an issue.
It seems that the problem is the vacuum pump. It seems so obvious now, I dont know why I didnt catch it before. I was thinking of when this started and it was a couple of months ago. I had just pulled the truck out of the back yard and was getting it running again. It now has a new transmission, new radiator, and while I was in there, I noticed that there was metal bracket with a pulley on it that was not stock and was vibrating and rattling. It was attached to the alternator bracket and was putting just a little bit of tension on the belt that runs from the alternator to the vacuum pump. I removed the added on tensioner and tightened the belts up. That is when the problem started. I am thinking of loosening the belt to the vacuum pump to see if it can build vacuum again.
Anyway. For the long term it looks like I will be buying a new vacuum pump....