Need some inspiration- lacks power/stumbles 3-4k rpm? - Saab 900 Bulletin Board - Saabnet.com
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88 turbo. Car flys with partial throttle, through entire rev range. WOT only 'works' less than 3k, and over 4k. anywhere inbetween it stumbles (not terribly noticable), and it's driving me nuts!
So far, i've checked or changed:
Plugs/cap/rotor (new, gapped to 28). All the right stuff, NGK, Bosch, etc.
Coil
NTC
ECU
Vac capsule-it is currently running a slightly 'modded' for retard
Timing is set to retard to 10BTDC under 12psi.
TPS
AMM-unfortunately, both of mine are bad at cold start, with hunting idles for the first minute. However, neither showed these problems before, so i am assuming that they are not responsible for this??? Replacement is on it's way.
O2 sensor
dielectric greased all ecu connections.
Cleaned and greased the grounds on top of motor, but not the ones down below, yet.
Dismantled and thoroughly inspected plumbing for leaks.
Replaced all vac lines.
Hopefully checking fuel pressure soon...
Any thoughts?
posted by 66.172.103...
Posts in this Thread:
- Need some inspiration- lacks power/stumbles 3-4k rpm?, nicknick
, Sat, 3 Sep 2011 12:37:57 <-- Viewing This Message- Thanks all. Where i am right now is..., nicknick
, Mon, 5 Sep 2011 12:14:20 - Re: Need some inspiration- lacks power/stumbles 3-4k rpm?, Simon S, Mon, 5 Sep 2011 10:43:53
- right at WOT only?, Siegfried, Sun, 4 Sep 2011 07:22:17
- Re: Need some inspiration- lacks power/stumbles 3-4k rpm?, Cmyles
, Sat, 3 Sep 2011 14:44:18
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