Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine> Stumbling 94 Chevy
User Name
Password
lost password?   |   register now

Thread: Stumbling 94 Chevy Reply to Thread
Title:
  
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
10-03-2012 02:15 AM
S10 Racer
Quote:
Originally Posted by Alaska_Man View Post
I have a 94 Chevy 1/2 ton 4 wheel drive pick-up with a 5.7 liter motor and it runs great. Most of the time. This truck has about 130,000 miles on it. As I said, it runs great, until I start up a hill and lug the motor. Then it will start with a stumble and does this all the way up the hill until it shifts down to another gear. The stumbles, a miss to me, are about 2 to 3 seconds apart until it shifts. It has, also, done this a couple times while stopped at red light. But, at the stop light, the miss or stumble, is about 5 to 10 seconds apart. No codes in the truck computer. So, I'm lost with what to look for. Any ideas? Also need to add, the motor has TBI and I added some injector cleaner to the gas tank with no help there.
That is typical of needing new spark plugs. If you buy the platinum plugs (about $8.00 ea. in my area) and gap them at .045 for an HEI ignition, the problem will go away. Been there, done that.
10-02-2012 09:12 PM
DoubleVision Have you checked it for vacuum leaks? Make sure you check the TBI to intake mounting flange gasket as well. Check the vacuum line that's going to the map sensor, make sure it's pulling vacuum as TBI engines were bad about gumming up the throttle body so bad with carbon it would plug the vacuum ports. Also what shape is the tune up in? When was the last time it was tuned up?
10-02-2012 03:18 PM
Alaska_Man
Stumbling 94 Chevy

I have a 94 Chevy 1/2 ton 4 wheel drive pick-up with a 5.7 liter motor and it runs great. Most of the time. This truck has about 130,000 miles on it. As I said, it runs great, until I start up a hill and lug the motor. Then it will start with a stumble and does this all the way up the hill until it shifts down to another gear. The stumbles, a miss to me, are about 2 to 3 seconds apart until it shifts. It has, also, done this a couple times while stopped at red light. But, at the stop light, the miss or stumble, is about 5 to 10 seconds apart. No codes in the truck computer. So, I'm lost with what to look for. Any ideas? Also need to add, the motor has TBI and I added some injector cleaner to the gas tank with no help there.

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -6. The time now is 09:02 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.