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?

Thread Tools
 
Search this Thread
 
  #1  
Old 01-09-2007, 12:21 PM
Miatamon's Avatar
Thread Starter
Join Date: Dec 2006
Posts: 40
Likes: 0
Received 1 Like on 1 Post
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?
 
  #2  
Old 01-09-2007, 01:26 PM
JPN's Avatar
JPN
JPN is offline
Senior Member
Join Date: Sep 2006
Location: IPS, MA
Posts: 5,387
Likes: 0
Received 10 Likes on 5 Posts
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
 
  #3  
Old 01-09-2007, 02:25 PM
robert213's Avatar
Senior Member
Join Date: Jun 2005
Location:
Posts: 402
Likes: 0
Received 0 Likes on 0 Posts
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.

 
  #4  
Old 01-09-2007, 08:13 PM
Miatamon's Avatar
Thread Starter
Join Date: Dec 2006
Posts: 40
Likes: 0
Received 1 Like on 1 Post
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
 
  #5  
Old 01-09-2007, 09:33 PM
tech's Avatar
Administrator
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Likes: 0
Received 40 Likes on 38 Posts
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.
 
  #6  
Old 01-09-2007, 10:34 PM
Miatamon's Avatar
Thread Starter
Join Date: Dec 2006
Posts: 40
Likes: 0
Received 1 Like on 1 Post
Default RE: Is a very stiff accelerator pedal normal?

Is the valve related to the cruise somehow? What does it do?
 
  #7  
Old 01-12-2007, 09:11 PM
tech's Avatar
Administrator
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Likes: 0
Received 40 Likes on 38 Posts
Default RE: Is a very stiff accelerator pedal normal?

That valve/switch is a pedal position sensor used to compare to the TPS.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
soupcan
Volvo V70
6
02-07-2015 02:10 PM
buckhr
Volvo 850
2
04-16-2013 02:21 PM
PatchyFog
Volvo 850
9
07-07-2010 09:50 PM
maddox
Volvo C70
6
02-17-2007 01:25 AM
volvoforums53
Volvo 240, 740 & 940
8
08-13-2006 12:30 PM



Quick Reply: Is a very stiff accelerator pedal normal?



All times are GMT -5. The time now is 03:23 PM.