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Everything posted by GSpence2
Car should be running with brakes applied and gear selector in neutral
GSpence2 replied to ARModen's topic in 9PA, 9PA1 (Cayenne, Cayenne S, Cayenne Turbo, Cayenne Turbo S)I thought about doing it but I think martadon is right - more expense and hassle than benefit
GSpence2 replied to nh9095's topic in 9PA, 9PA1 (Cayenne, Cayenne S, Cayenne Turbo, Cayenne Turbo S)
I've experienced this unfortunately a few times with 928s - broken welded camshaft, bad crank sensor, dual-mass flywheel came apart, bad neutral safety switch and last time was a broken timing belt tensioner but the engine just freewheeled then as it bent every valve in creation. I'm not sure a seized water pump would act this way as usually the plastic impeller just breaks off the steel or alloy shaft but the motor may still turn over. is your clutch in good health?
Have done compression and leak down tests? no codes? you sure? crank sensor, cam sensor, neutral safety?
GSpence2 replied to ARModen's topic in 9PA, 9PA1 (Cayenne, Cayenne S, Cayenne Turbo, Cayenne Turbo S)door shouldn't HANG regardless of year could BE A sign of prior collision DAMAGE
Just for fun. Recently had my 120k mile service completed for my 04 CTT. Clean bill of health and ran good sounded better felt great. Soon there after I happened across a gent in a Viper truck, coming up behind me fast flashing his lights blowing his horn and then pulls along side window down and thumbs up. I think to myself, " ...man I too old for this sh*t...", but give him a go anyway. PSM off, suspension lowered and to sport, 3 horn blasts and floor it! After a huge breath and accompanying roar and turbo lag, it's 1st gear and off we go! Needless to say it was fun. More to say after he caught up; "...that's not stock!" No it isn't I reply. So as I let him speed of I continue my leisurely sub 60mph drive home. Along the way I get PSM failure visit workshop. Okay...next up check engine light. Hmm...next up tranny lights up like it's in safe mode but is audibly and physically shifting fine. Temp is a little higher than normal and hmm...no more than .3 bar boost at WOT? Okay what did I break now? SO, at home codes pulled: 2187, 2198, 2281, 0299. Okay smoke 'em! Turn out I've manage to "break?" the old worn out breather hoses and the intake distributor is leaking! Gee Bevis...anywho fun weekend for me! So, while I'm in there I think I'll swap out the diverter valves and control lines as well. Just wanted to share.
Hmm..curious. I can plainly hear the noise in your audio clips. Almost sounds like a high RPM electric/servo motor - air pump, or HP fuel pumps? The noise may be originating well away from the center console/transmission tunnel and resonating/finding its way in through the most accessible, i.e., least insulated (?) area. Kinda like water finding its level and seeping in. I agree with wvicary, chassis mics like what are used in NVH tests may be the best tool to find & isolate the cause and origin. Good luck.