Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

Is a very stiff accelerator pedal normal?

Old Jan 9, 2007 | 12:21 PM
  #1  
Miatamon's Avatar
Thread Starter
Joined: Dec 2006
Posts: 40
Likes: 1
Default Is a very stiff accelerator pedal normal?

Driving my sister's car I notice that the accelerator is REALLY stiff to push down. So much so when driving the car I have trouble getting it moving off the line unless I damn near break my toes on the thing. How stiff should this thing be? Is it just a cable I can lube?
 
Reply
Old Jan 9, 2007 | 01:26 PM
  #2  
JPN's Avatar
JPN
Senior Member
Joined: Sep 2006
Posts: 5,340
Likes: 14
From: IPS, MA
Default RE: Is a very stiff accelerator pedal normal?

Hi Miatamon,

The accelerator pedal shouldn't be as stiff as you've described. Check the cable as well as linkage & throttle plate area. Something may be about to bind. Also check the inside of the throttle plate (with engine off) by removing the induction hose and inspecting with flash light, open the throttle plate by hand, by rotating the rotor-looking component where the accelerator cable is attached to. If too dirty inside the throttle body, I would try cleaning it with carburetor/fuel system cleaning spray (one that is safe for O2 sensor & catalytic converter) + a tooth brush. Also, check that there is nothing on the floor that is interfering with the pedal.

Good luck,


JPN
 
Reply
Old Jan 9, 2007 | 02:25 PM
  #3  
robert213's Avatar
Senior Member
Joined: Jun 2005
Posts: 402
Likes: 0
From:
Default RE: Is a very stiff accelerator pedal normal?

Just a thought...

How are the electrical ground wires around your engine? Are any of them missing?

If the electric current (for starter motor) is searching for a ground, it will flow thru engine, thru throttle body, thru accelerator pedal cable, thru accelerator pedal, and finally to body ground.

When electric current flows thru accelerator pedal cable, it will cause it to weld/fuse to anything metal -- thus making it difficult to use your accelerator pedal.

 
Reply
Old Jan 9, 2007 | 08:13 PM
  #4  
Miatamon's Avatar
Thread Starter
Joined: Dec 2006
Posts: 40
Likes: 1
Default RE: Is a very stiff accelerator pedal normal?

ORIGINAL: robert213

Just a thought...

How are the electrical ground wires around your engine? Are any of them missing?

If the electric current (for starter motor) is searching for a ground, it will flow thru engine, thru throttle body, thru accelerator pedal cable, thru accelerator pedal, and finally to body ground.

When electric current flows thru accelerator pedal cable, it will cause it to weld/fuse to anything metal -- thus making it difficult to use your accelerator pedal.

What an interesting possibility! I wouldn't have thought of that in a million years.

That said, I have a feeling that's not the cause. It does feel a lot like carpet is bunching up under the pedal, but it's not AFAIK. I'll check out the cable and throttle plate.

Thanks
 
Reply
Old Jan 9, 2007 | 09:33 PM
  #5  
tech's Avatar
Administrator
Joined: Sep 2004
Posts: 36,349
Likes: 45
From: Orlando, Florida
Default RE: Is a very stiff accelerator pedal normal?

There is a valve/sensor inline on the cable make sure it didn't break and is coming apart.
 
Reply
Old Jan 9, 2007 | 10:34 PM
  #6  
Miatamon's Avatar
Thread Starter
Joined: Dec 2006
Posts: 40
Likes: 1
Default RE: Is a very stiff accelerator pedal normal?

Is the valve related to the cruise somehow? What does it do?
 
Reply
Old Jan 12, 2007 | 09:11 PM
  #7  
tech's Avatar
Administrator
Joined: Sep 2004
Posts: 36,349
Likes: 45
From: Orlando, Florida
Default RE: Is a very stiff accelerator pedal normal?

That valve/switch is a pedal position sensor used to compare to the TPS.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
soupcan
Volvo V70
6
Feb 7, 2015 02:10 PM
buckhr
Volvo 850
2
Apr 16, 2013 02:21 PM
PatchyFog
Volvo 850
9
Jul 7, 2010 09:50 PM
maddox
Volvo C70
6
Feb 17, 2007 01:25 AM
volvoforums53
Volvo 240, 740 & 940
8
Aug 13, 2006 12:30 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 02:56 AM.