Sticking gas pedal

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Sticking gas pedal

Postby dh854 » Wed Mar 10, 2010 9:58 am

My gas pedal is sticking badly when the temperature is around freezing (No, My Volvo is not mutating into a Toyota, haha). As the day warms up, the problem goes away.
I had this problem right after I bought the car 8 years ago. The dealer did a throttle body cleaning and the problem went away.
Now I want to do this myself. Do I really need to take the throttle body apart for this? I think I've seen cleaner spray in the parts store that does the magic without removing the TB. But is that save? I don't want to ruin my injectors or other parts.

Thanks for any ideas,

Dirk
97' Volvo 850 GLT
79' Ford Capri "S", 2.8 V6, T9 HD 5-speed
68' Lincoln Continental Coupe, 460 cui
58' Porsche Diesel Junior
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Re: Sticking gas pedal

Postby pro_star » Wed Mar 10, 2010 11:42 am

This is on your 97??? strange.

I'm of no use to you, I haven't had this issue yet.
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Re: Sticking gas pedal

Postby dh854 » Wed Mar 10, 2010 1:58 pm

Yes, this is on my 97' 850. I think our engines are very similar, you must still have the non ETM setup, right? That came only in 99' as har as I know. And it's the same LPT turbo.
I have to look into this a little further, because when this happens I also get a kind of screachy noise from the pedal area.
97' Volvo 850 GLT
79' Ford Capri "S", 2.8 V6, T9 HD 5-speed
68' Lincoln Continental Coupe, 460 cui
58' Porsche Diesel Junior
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Re: Sticking gas pedal

Postby pro_star » Wed Mar 10, 2010 4:18 pm

well, I have the high pressure turbo, and yes, non etm. Which is why I was kinda shocked. scratchy noise, is it possible you've got something under there, some dirt or something near the pedal...umm....oh god here's where we see my amazing technical vocabulary...where the pedal goes underneith...or some ice or something that's freezing up....
My Volvo:
Christine
1998 s70 T5
391,000 km
QBM Endlinks
Sassy new brake lines (without blowing up the shop!)
Sexy e-codes! (thanks fcp!)
Bilstein HDs sitting in my trunk waiting for install
Summer tire time!!!! Whoot! Yokohama S Drive - let sunroof season begin!!!
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Re: Sticking gas pedal

Postby dh854 » Wed Mar 10, 2010 4:26 pm

Oops, sorry I missed that you have a T5. Different animal.

I guess I have to bend my back and check things out under there. Still I'm interested in finding out about those TB cleaner sprays.

Thanks, Dirk
97' Volvo 850 GLT
79' Ford Capri "S", 2.8 V6, T9 HD 5-speed
68' Lincoln Continental Coupe, 460 cui
58' Porsche Diesel Junior
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Re: Sticking gas pedal

Postby bdimag » Wed Mar 10, 2010 4:44 pm

i think the issue w/ the sprays is messing up the throttle position sensor...

if you pull off the hose to the TB, could you get in and clean it? shouldn't take a whole lot of work.
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Re: Sticking gas pedal

Postby FCPGroton » Wed Mar 10, 2010 7:28 pm

bdimag wrote:i think the issue w/ the sprays is messing up the throttle position sensor...

if you pull off the hose to the TB, could you get in and clean it? shouldn't take a whole lot of work.


+1

It is not hard to clean at all and you do not need to remove the throttle body to clean it.
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Re: Sticking gas pedal

Postby Somthngfrce » Wed Mar 10, 2010 8:07 pm

FCPGroton wrote:
bdimag wrote:i think the issue w/ the sprays is messing up the throttle position sensor...

if you pull off the hose to the TB, could you get in and clean it? shouldn't take a whole lot of work.


+1

It is not hard to clean at all and you do not need to remove the throttle body to clean it.



+2 on this...... The spray is easy to use and relatively cheap, however not worth damaging TPS.
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Re: Sticking gas pedal

Postby dh854 » Wed Mar 10, 2010 9:59 pm

Thanks guys. Thats what I will do and stay away from the spray cleaner. Now one more question: What do you use as a cleaner? First instinct to me would be WD40 and a rag. Because that's what I use a lot for all kinds of stuff.

But is there anything better? Some kind of solvent, maybe.
97' Volvo 850 GLT
79' Ford Capri "S", 2.8 V6, T9 HD 5-speed
68' Lincoln Continental Coupe, 460 cui
58' Porsche Diesel Junior
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Re: Sticking gas pedal

Postby FCPGroton » Thu Mar 11, 2010 8:22 pm

I used brake cleaner so it would evaporate away.
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