855tm:rpm hangs between shifts?
#1
855tm:rpm hangs between shifts?
Hi all
I have a 1995 850 turbo manual.
If I rev to say 3000 rpm then step on the clutch as to shift the rpm stays at 3000 rpm for 2-3 seconds then drops to idle speed,every time.
I have connected a smoke generator to the intake and did not find any significant vacuum/boost leaks.Cable throttle returns quickly and smoothly.
I did just instal this engine from another car.
Otherwise the engine runs great and has good power.
No trouble codes.
Anyone else experience this?
Any suggestions welcome.
I have a 1995 850 turbo manual.
If I rev to say 3000 rpm then step on the clutch as to shift the rpm stays at 3000 rpm for 2-3 seconds then drops to idle speed,every time.
I have connected a smoke generator to the intake and did not find any significant vacuum/boost leaks.Cable throttle returns quickly and smoothly.
I did just instal this engine from another car.
Otherwise the engine runs great and has good power.
No trouble codes.
Anyone else experience this?
Any suggestions welcome.
#3
smoke machine:a device that produces white smoke,kind of like a disco fog generator on a smaller scale.
connect it to the intake(or any other closed system(gas tank/evap,crankcase)) via a vacuum hose and block off the air intake at MAF sensor
wherever smoke comes out you have a leak that probably needs repairing
connect it to the intake(or any other closed system(gas tank/evap,crankcase)) via a vacuum hose and block off the air intake at MAF sensor
wherever smoke comes out you have a leak that probably needs repairing
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waune
Volvo 850
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03-05-2011 12:26 PM