Hesitation/surge @ 2500-3500 rpm - Saab 9000 Bulletin Board - Saabnet.com
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Hesitation/surge @ 2500-3500 rpm
Posted by Tapani [Email] (more from Tapani) on Wed, 5 Dec 2001 06:58:12
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Hi all, -94 CSE 2,3 FPT manual, 90kmiles. Replaced BPC-valve for fuel cut off prolems - all cured. New plugs, gapped 0,9 mm. New air filter. Intake temp sensor reads correctly, not tested the O2 sensor. Disconnected battery for a while and then a few third gear adaptation runs (winter) and 2000 miles high way. Problem: hesitation/power surges between 2500-3500 rpms, feels stronger if throttle not all the way down. Boost level does not fluctuate with power. Below and above no problems. Boost level fine, beginning of red when floored @ 2k, tapers down a bit after 3000 rpm, mid yellow at full song. Good mileage, high 20s - low 30s. Just bought a new fuel filter, will install tomorrow. I hope it's not the DI...... Any ideas?
Regards,
Tapani
posted by 195.10.15...
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