my brakes wont work, when i push the brake pedal its stiff.

Asked by Nov 05, 2013 at 01:51 PM about the 1994 Jeep Grand Cherokee

Question type: Maintenance & Repair

yesterday i had my crankshaft sensor changed on my 1994 jeep grand cherokee, now
when i push my brakes they wont move they're stiff and i'm not sure why. i know that they
are power brakes and i know i have abs (not sure if thats the same thing) i guess i need to
know if there was something that might have gotten unplugged, or if my brakes went out
completely and i need something replaced.

2 Answers


Make sure the hose that goes from the brake booster is hooked up to the intake. The booster is the big round thing behind the brake master cylinder. I also believe the 94's use a pedal position sensor that is located in the front of booster as well. if it is not in place, it may cause a vac. leak. And vac. is what makes it work. Hope this helps......

2 of 2 people found this helpful.

I went to school years ago rebuilding engines and transmissions. My teacher would always day; kiss the situation. Keep it simple stupid. As a chic guy's always looked at females being car stupid. My brake pedal also went hard, I opened the hood, took my flash light and reviewed from my brake booster and all hoses to the engine. Your looking for a oil (brake fluid) leak. I found a valve had cracked and exposed the "oil" at my brake booster. For less than $5.00 I replaced that plastic valve and reconnected the hose to fix my problem. Good Luck! Keep it Simple <3

3 of 3 people found this helpful.

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