Diffcult to clean a throttle body (87 740 Turbo)?

  • Thread starter Thread starter Mang0
  • Start date Start date
M

Mang0

For most intents I'm a newbie mechanic.
I can do the basics (changing a tyre :P), oil, air filter, etc.

I'm trying to improve the shape of this 87 740 Turbo I purchased a few
weeks ago. It stalls when idling after a cold start if it's really cold.
It it's just a little cold, it'll splutter and then the engine revs up
to avoid the stall.
If it's cold and put into gear, it will almost always stall unless my
foot it touching the gas. And even then it's 50/50.

Someone recommended I clean the throttle body, as this helps a great
number of problems. As I've never done this before, I'm a little nervous
:) I also read that the "idle valve" should be checked and cleaned.

What I need to know, is where IS the throttle body on my 740 Turbo? :P
I've found the throttle cable, and where it connects etc. Is the part
where it goes into the engine called the "throttle body" ?
The Haynes book (surprisingly) doesn't mention it.

Also, I've seen people on this board recommend carb cleaner, but the FAQ
on brickboard recommends Fuel Injector cleaner and explicitly says "NOT
carb cleaner". Which should I use?
 
Mang0 said:
For most intents I'm a newbie mechanic.
I can do the basics (changing a tyre :P), oil, air filter, etc.

I'm trying to improve the shape of this 87 740 Turbo I purchased a few
weeks ago. It stalls when idling after a cold start if it's really cold.
It it's just a little cold, it'll splutter and then the engine revs up
to avoid the stall.
If it's cold and put into gear, it will almost always stall unless my
foot it touching the gas. And even then it's 50/50.

Someone recommended I clean the throttle body, as this helps a great
number of problems. As I've never done this before, I'm a little nervous
:) I also read that the "idle valve" should be checked and cleaned.

What I need to know, is where IS the throttle body on my 740 Turbo? :P
I've found the throttle cable, and where it connects etc. Is the part
where it goes into the engine called the "throttle body" ?
The Haynes book (surprisingly) doesn't mention it.

Also, I've seen people on this board recommend carb cleaner, but the FAQ
on brickboard recommends Fuel Injector cleaner and explicitly says "NOT
carb cleaner". Which should I use?
Click to expand...


The throttle body is the metal butterfly valve bolted to the intake
manifold, the air pipe from the intercooler connects directly to it through
a formed rubber elbow, take that off and the throttle butterfly (rotated by
the throttle cable) will be visible. It's much easier to clean if you remove
the whole assembly, it's 3 bolts to the intake manifold, you do have to
remove the throttle position sensor to get all the bolts out though and then
you have to realign it so it clicks just as the throttle starts to open
without it holding the throttle open, it's easier to do than it is to
describe.
 
What I need to know, is where IS the throttle body on my 740 Turbo? :P
I've found the throttle cable, and where it connects etc. Is the part
where it goes into the engine called the "throttle body" ?
The Haynes book (surprisingly) doesn't mention it.

Also, I've seen people on this board recommend carb cleaner, but the FAQ
on brickboard recommends Fuel Injector cleaner and explicitly says "NOT
carb cleaner". Which should I use?
Click to expand...


This should help:

http://www.ipdusa.com/ProductsCat.aspx?CategoryID=511&NodeID=767&RootID=629

IPD USA specializes in Volvo parts. The link above is for a throttle
body cleaning kit they sell and also at that link is a 3 page pdf file
that you should be able view that describes the process of removing
the throttle body, cleaning it and then reinstalling the throttle
body. That piece of paper came in handy when I recently cleaned mine.
I just noticed that you are outside the US so I can't say how much it
would cost to get the kit shipped to you, but it would probably be
cheaper for you to cobble up the kit locally anyway.

Hope this helps!
 
http://www.ipdusa.com/ProductsCat.aspx?CategoryID=511&NodeID=767&RootID=629
IPD USA specializes in Volvo parts. The link above is for a throttle
body cleaning kit they sell and also at that link is a 3 page pdf file
that you should be able view that describes the process of removing
the throttle body, cleaning it and then reinstalling the throttle
body. That piece of paper came in handy when I recently cleaned mine.
I just noticed that you are outside the US so I can't say how much it
would cost to get the kit shipped to you, but it would probably be
cheaper for you to cobble up the kit locally anyway.
Click to expand...

Don't let me email address fool you :-)

Wow, only USD18, I was expecting at least 3 times that.
I'm starting to like ipdusa quite a lot.
The next thing from them will be the headliner kit.
 
Mang0 said:
Don't let me email address fool you :-)

Wow, only USD18, I was expecting at least 3 times that.
I'm starting to like ipdusa quite a lot.
The next thing from them will be the headliner kit.
Click to expand...

IPD is great for a lot of stuff, you can get the headliner kit for much less
elsewhere though and you can get it in colors other than white. I paid about
$50 for the cloth and adhesive to do mine.
 
I am just about to undertake this job myself and am curious about one
thing. The IPD Site states:

"Our latest kit outlines the step by step procedure on removal,
cleaning and resetting of the throttle body on 1982 and newer LH
jetronic cars."

Although mine is a 1983 240 Turbo it uses K-Jetronic instead of
LH-Jetronic injection. Is anything majorly different? Looking at their
diagrams I see right away that I don't have the same Throttle Switch
setup. What about the gasket? I called the dealer and their parts guy
had no idea if it would be the same gasket for my car.

thanks
blurp
 
The throttle body is fairly common to all Volvos and just needs a thorough
clean. You can use about half a can of carb cleaner to get it spotless. In
the VOC we recommend that it be done every two years for maximum usefulness.

Cheers, Peter.
 
blurp said:
I am just about to undertake this job myself and am curious about one
thing. The IPD Site states:

"Our latest kit outlines the step by step procedure on removal,
cleaning and resetting of the throttle body on 1982 and newer LH
jetronic cars."

Although mine is a 1983 240 Turbo it uses K-Jetronic instead of
LH-Jetronic injection. Is anything majorly different? Looking at their
diagrams I see right away that I don't have the same Throttle Switch
setup. What about the gasket? I called the dealer and their parts guy
had no idea if it would be the same gasket for my car.

thanks
blurp
Click to expand...


Nothing is particularly different, the K-Jet turbos are actually easier when
it comes to the throttle body. The non-turbo K-Jet is another story all
together though.
 
You must log in or register to reply here.
Back
Top