1979 Celica Choke (20R Engine)

[Guest]

Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

I'm checking the operation of the Choke on a 1979 Celica. The Factory
Service manual mentions the choke opener and choke breakers, which I found
and checked out OK.

Then they mention the Choke linkage diaphragm, which I can't find. Are they
referring to the other two? Choke breaker diaphragm is on driver's side,
choke opener on passenger side (same as AAP) but I can't find what Toyota
calls the "choke linkage diaphragm.". Where would this be in relation to the
other two? (This car has the "Federal" emmisions systems).

I'm troubleshooting a fast idle condition. The car has been idling at 1300
rpm or so. When I hit the accelerator quickly, the idle drops to 800 rpm.
When I suspected the choke, I observed the butterfly OPEN while the car was
racing at 1300 rpm's, however. Could this be a linkage problem? Throttle
return spring?

 

[spencer]

Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

What is your FSB?



"tom418" <cscokid11768@yahoo.com> wrote in message
news:kuuIc.40734$oh.2046@lakeread05...
> I'm checking the operation of the Choke on a 1979 Celica. The Factory
> Service manual mentions the choke opener and choke breakers, which I found
> and checked out OK.
>
> Then they mention the Choke linkage diaphragm, which I can't find. Are
they
> referring to the other two? Choke breaker diaphragm is on driver's side,
> choke opener on passenger side (same as AAP) but I can't find what Toyota
> calls the "choke linkage diaphragm.". Where would this be in relation to
the
> other two? (This car has the "Federal" emmisions systems).
>
> I'm troubleshooting a fast idle condition. The car has been idling at 1300
> rpm or so. When I hit the accelerator quickly, the idle drops to 800 rpm.
> When I suspected the choke, I observed the butterfly OPEN while the car
was
> racing at 1300 rpm's, however. Could this be a linkage problem? Throttle
> return spring?
>
>

 

[Guest]

Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

Les than 800mhz, that's why Toyota's choke off the line without an updated
bios cow chip in their manifold.

"Spencer" <warthog@nospam.co.uk> wrote in message
news:ccu36c$m8r$1@hercules.btinternet.com...
> What is your FSB?
>
>
>
> "tom418" <cscokid11768@yahoo.com> wrote in message
> news:kuuIc.40734$oh.2046@lakeread05...
> > I'm checking the operation of the Choke on a 1979 Celica. The Factory
> > Service manual mentions the choke opener and choke breakers, which I
found
> > and checked out OK.
> >
> > Then they mention the Choke linkage diaphragm, which I can't find. Are
> they
> > referring to the other two? Choke breaker diaphragm is on driver's
side,
> > choke opener on passenger side (same as AAP) but I can't find what
Toyota
> > calls the "choke linkage diaphragm.". Where would this be in relation to
> the
> > other two? (This car has the "Federal" emmisions systems).
> >
> > I'm troubleshooting a fast idle condition. The car has been idling at
1300
> > rpm or so. When I hit the accelerator quickly, the idle drops to 800
rpm.
> > When I suspected the choke, I observed the butterfly OPEN while the car
> was
> > racing at 1300 rpm's, however. Could this be a linkage problem?
Throttle
> > return spring?
> >
> >
>
>

 

[Guest]

Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

Sounds to me like there's a nut loose in the operator's chair.

tom418 wrote:
> I'm checking the operation of the Choke on a 1979 Celica. The Factory
> Service manual mentions the choke opener and choke breakers, which I
> found and checked out OK.
>
> Then they mention the Choke linkage diaphragm, which I can't find.
> Are they referring to the other two? Choke breaker diaphragm is on
> driver's side, choke opener on passenger side (same as AAP) but I
> can't find what Toyota calls the "choke linkage diaphragm.". Where
> would this be in relation to the other two? (This car has the
> "Federal" emmisions systems).
>
> I'm troubleshooting a fast idle condition. The car has been idling at
> 1300 rpm or so. When I hit the accelerator quickly, the idle drops to
> 800 rpm. When I suspected the choke, I observed the butterfly OPEN
> while the car was racing at 1300 rpm's, however. Could this be a
> linkage problem? Throttle return spring?