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98 Chevy k1500 Trans surging, hard brake

Printed From: CorrectCraftFan.com
Category: General Correct Craft Discussion
Forum Name: Off Topic
Forum Discription: Anything non-Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=6633
Printed Date: December-23-2024 at 9:41am


Topic: 98 Chevy k1500 Trans surging, hard brake
Posted By: 69 Mustang
Subject: 98 Chevy k1500 Trans surging, hard brake
Date Posted: May-11-2007 at 12:22am
Hi Guys,

I have a 98 Chevy k1500 - 3 in. lift, 33's with 148,000 on it.

Today I had something I've never experienced before. At just above idle (1000 rpm) when I step on the brake the pedal is hard and the truck will lurch forward - not good.

When the truck finally stops and I hold my foot on the pedal there is a hissing noise inside the cab and the rpms hold around 1000???

If I shift into neutral and take my foot off the brake pedal the rpms come down and the whole system works properly.

I miss my 78 CJ7...knew how to fix that.



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For every complex problem, there is a solution that is simple, neat, and wrong.

"Where the **** are we?" Amelia Earhart. July 2, 1937



Replies:
Posted By: GottaSki
Date Posted: May-11-2007 at 7:22am
Vacuum leak in the brake booster vac assist, I suspect.

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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."

River Rat to Mole


Posted By: eric lavine
Date Posted: May-11-2007 at 7:42am
for sure gotta ski, either the hose going to the booster or the diaphram on the booster itself, the hiss you are hearing is vacuum leaking, look for oil near the booster,

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"the things you own will start to own you"


Posted By: 69 Mustang
Date Posted: May-11-2007 at 11:27pm
Thanks guys, I appreciate the help. I will try and trace the problem to see if I can fix it before I go in for service.

This is only one reason why I love this forum, thanks again.

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For every complex problem, there is a solution that is simple, neat, and wrong.

"Where the **** are we?" Amelia Earhart. July 2, 1937



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