Car seems to hold rpms and speed for most of the throttles range? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Oldsmobile When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

Reply
 
 
 
Thread Tools Search this Thread
Old 03-05-2015, 12:17 AM   #1
Big
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Feb 2015
Posts: 11
Thanked 0 Times in 0 Posts
Big is on a distinguished road
Default Car seems to hold rpms and speed for most of the throttles range?

So i have this car that when i want to speed up, the rpms will drop just below 2000 and stick there no matter how much i move the throttle, unless i floor it or let off the gas and press it again. This is happening in all gears and does it about 70% of the time. It will run kinda rough and gas pedal will pulse. Fuel filter was just changed.
Big is offline   Reply With Quote
Old 03-05-2015, 02:54 PM   #2
Senior Member
True Car Nut
 
Soft Ride's Avatar
 
Join Date: Jan 2012
Location: BC Canada
Posts: 3,583
Thanked 338 Times in 301 Posts
Soft Ride has much to be proud ofSoft Ride has much to be proud ofSoft Ride has much to be proud ofSoft Ride has much to be proud ofSoft Ride has much to be proud ofSoft Ride has much to be proud ofSoft Ride has much to be proud ofSoft Ride has much to be proud of
Default

Do you have any service soon/check engine lights on? If so..
The car may could have issues with the throttle position sensor or MAF.
Try disconnecting the MAF and see how it does.
Look for any broken or cracks /leaks in vacuum lines, throttle body bore cleanliness, and correct movement open/close of throttle plate.
Have you done a tune up with new air filter/ spark plugs and wires lately?
Soft Ride is online now   Reply With Quote
Old 03-06-2015, 09:34 AM   #3
Senior Member

True Car Nut
 
2kg4u's Avatar
 
Join Date: Sep 2006
Location: Windsor, Ontario / Detroit, Michigan
Posts: 4,804
Thanked 220 Times in 181 Posts
2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of
Default

Have the car scanned for diagnostic trouble codes. Autozone will do that for free. You could be getting a misfire, there could be an issue with the throttle position sensor, the fuel pump could be failing.

Does it idle rough?
2kg4u is offline   Reply With Quote
Old 03-06-2015, 09:52 AM   #4
Senior Member

Certified GM nut
 
Tech II's Avatar
 
Join Date: Feb 2014
Location: Worcester, Ma.
Posts: 2,141
Thanked 779 Times in 608 Posts
Tech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond repute
Default

Do as the guys suggested....also check back pressure...
Tech II is offline   Reply With Quote
Old 03-06-2015, 12:14 PM   #5
Big
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Feb 2015
Posts: 11
Thanked 0 Times in 0 Posts
Big is on a distinguished road
Default

Quote:
Originally Posted by Soft Ride View Post
Do you have any service soon/check engine lights on? If so..
The car may could have issues with the throttle position sensor or MAF.
Try disconnecting the MAF and see how it does.
Look for any broken or cracks /leaks in vacuum lines, throttle body bore cleanliness, and correct movement open/close of throttle plate.
Have you done a tune up with new air filter/ spark plugs and wires lately?
Already tried the maf sensor, car ran horrible. Throttle body is clean i already tried spraying some cleaner at it. And i had recently done new spark plugs and air filter looks like it just came out of the box. my car was doing this before i had touched anything on the engine. But I'll check vacuum lines and the fuel pressure
Big is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Which event had the most impact on the most people? jwakamud Lounge 27 01-23-2008 09:55 PM
Best car in the $300-$500 price range Hans Lounge 9 07-19-2007 09:41 PM
I will hug him and pet him and squeeze him and hold him Gumball Lounge 19 02-25-2007 08:28 PM
Question about shift speed and RPMs for your Bonneville, PDXGTP Performance, Brainstorming & Tuning 31 01-31-2007 01:04 PM
Car chugs at 1500 rpms howieb4 1992-1999 21 02-18-2005 08:02 PM


Tags
acceleration issues, throttle, throttle responce

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:25 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.