Stall out on Throttle
#1
Stall out on Throttle
For context - 1984 (early car) 944.
After putting my car back together (Damper plate change / Vacuum Hose change under the Manifold), the car starts up fine, and idles strong, but the second that I touch the accelerator the car stalls out.
(The reason for the hose change was it was stalling on idle, and I noticed my AOS hose had a large crack in it).
I'm thinking the new stall out reason (upon acceleration) might be something to do with the Throttle Position Sensor, but I'm not sure the best test procedure.
The Clark's garage site outlines some voltage tests, but seems a little light on direction.
With the car off, and my ear next to the throttle, I can hear an audible "Click" when I turn the throttle cam (so I'm assuming that's a good thing - as I've read on some other sites - no adjustment required - yet)
Any ideas / input on how to ferret this out?
After all the wrenching I've done on this car over the Winter (*see Damper plate change above), I'm really done mentally, and am hoping for some "Check here" or how to "Test this" advice.
Thanks.
After putting my car back together (Damper plate change / Vacuum Hose change under the Manifold), the car starts up fine, and idles strong, but the second that I touch the accelerator the car stalls out.
(The reason for the hose change was it was stalling on idle, and I noticed my AOS hose had a large crack in it).
I'm thinking the new stall out reason (upon acceleration) might be something to do with the Throttle Position Sensor, but I'm not sure the best test procedure.
The Clark's garage site outlines some voltage tests, but seems a little light on direction.
With the car off, and my ear next to the throttle, I can hear an audible "Click" when I turn the throttle cam (so I'm assuming that's a good thing - as I've read on some other sites - no adjustment required - yet)
Any ideas / input on how to ferret this out?
After all the wrenching I've done on this car over the Winter (*see Damper plate change above), I'm really done mentally, and am hoping for some "Check here" or how to "Test this" advice.
Thanks.
#2
Check out this thread: https://rennlist.com/forums/928-foru...solutions.html
There may be some small adjustments you have to make on the testing front but the TPS testing concept should translate.
Good luck
There may be some small adjustments you have to make on the testing front but the TPS testing concept should translate.
Good luck
#3
If you pull the DME and disconnect it, you can make the following measurements at the open plug end. Very useful
Last edited by Dan Martinic; 05-07-2021 at 01:50 PM. Reason: Added DME plug diagram