95 850GLT threatening stall

[blurp]

Hi all,

My 1995 850GLT w/ about 220K did something weird last night: shortly
after pulling away from a red light (and with the engine warm) the
throttle started acting weird: the car would idle fine but if I gave
it any gas it would bog down and threaten to stall (engine coughing
and sputtering).

Once I backed off the gas it would wheeze a bit and then return to
normal idle.

Under the hood I repeated the experience by twisting the throttle body
and nearly stalling. Then, suspecting an air issue, I gave the
accordion hose leading from the airbox to the throttle body a squeeze
and the engine revs shot up to 2500 (as reported by the passenger) and
then settled back to normal idle. After that it worked fine.

So my question is: does this sound like something that might happen in
connection with the adjacent MAF sensor or are its symptoms completely
different? Is there something else I should pay close attention to or
inspect now in the light of day?

Thanks,
blurp

 

[James Sweet]

Hi all,

My 1995 850GLT w/ about 220K did something weird last night: shortly
after pulling away from a red light (and with the engine warm) the
throttle started acting weird: the car would idle fine but if I gave
it any gas it would bog down and threaten to stall (engine coughing
and sputtering).

Once I backed off the gas it would wheeze a bit and then return to
normal idle.

Under the hood I repeated the experience by twisting the throttle body
and nearly stalling. Then, suspecting an air issue, I gave the
accordion hose leading from the airbox to the throttle body a squeeze
and the engine revs shot up to 2500 (as reported by the passenger) and
then settled back to normal idle. After that it worked fine.

So my question is: does this sound like something that might happen in
connection with the adjacent MAF sensor or are its symptoms completely
different? Is there something else I should pay close attention to or
inspect now in the light of day?

Thanks,
blurp

I've seen this behavior with a bad fuel pump relay, there was enough
residual pressure to idle, but let in any more air and it leans out and
stalls.

Squeezing the air hose causing the RPM to increase is odd though, first
thing I would do is check carefully for splits in any plumbing between
the air mass meter and throttle body, and look for vacuum hoses that
have cracked or otherwise fallen off. The car is old enough for things
like that to start happening.

 

[Stephen Henning]

Hi all,

My 1995 850GLT w/ about 220K did something weird last night: shortly
after pulling away from a red light (and with the engine warm) the
throttle started acting weird: the car would idle fine but if I gave
it any gas it would bog down and threaten to stall (engine coughing
and sputtering).

Once I backed off the gas it would wheeze a bit and then return to
normal idle.

Under the hood I repeated the experience by twisting the throttle body
and nearly stalling. Then, suspecting an air issue, I gave the
accordion hose leading from the airbox to the throttle body a squeeze
and the engine revs shot up to 2500 (as reported by the passenger) and
then settled back to normal idle. After that it worked fine.

So my question is: does this sound like something that might happen in
connection with the adjacent MAF sensor or are its symptoms completely
different? Is there something else I should pay close attention to or
inspect now in the light of day?

sounds like broken motor mounts.

 

[blurp]

Well I took it all apart and found nothing. I guess it was just a
weird hiccough in the system. I think I'm swapping the car for a 1996
850 Turbo anyway so hopefully it'll be someone else's problem to
figure out.

Thanks,
blurp