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Car Forum / Alfa Romeo Cars / April 2004156 V6: a bit 'strangled'.
Today, my 156 doesen't feel like other days: between 3500 and 5000 RPMs, the engine is something like 'strangled', it has some hesitation in giving power... finally, a momentary lapse of power. (Pink Floyd enthusiast will understand me ;-) Monday the light 'engine failure' came up, stayed turned on for the whole day, then yesterday afternoon went out. For the whole time that the light was on, the engine runned well. Took to a Bosh Service, and the engine management computer said 'error in air/fuel mix'. The mechanic said that wasn't so bad, in fact it wasn't a failure, but just a 'wrong carburation'. But I think that this 'failure' is responsable of the loss of power of today: maybe the spark plugs are dirty, due to a major percentage of fuel during the 'failure'? Bye Bye ;-)  SignatureJacopo Bolzano, Italia -- Sportwagon 2.5 V6 24V Distinctive > Today, my 156 doesen't feel like other days: between 3500 and 5000 RPMs, the > engine is something like 'strangled', it has some hesitation in giving [quoted text clipped - 8 lines] > today: maybe the spark plugs are dirty, due to a major percentage of fuel > during the 'failure'? airmass meter MAF is common fault in V6 and symptons usually: hesitation around 5000rpm (loses power like rev limiter). Antti > airmass meter MAF is common fault in V6 and symptons usually: hesitation > around 5000rpm (loses power like rev limiter). > > Antti I must agree with Antti SignatureCiao from Holland AlfistaGJ (Gert-Jan) Alfa red 156 SW 1.8 Madeno tuned (2000) Golden Montreal (1973/4) Thanks guys. But the power loss isn't so huge, and comes out only when I push down the gas. Can be the airmass meter even? SignatureJacopo Bolzano, Italia -- Sportwagon 2.5 V6 24V Distinctive > Thanks guys. But the power loss isn't so huge, and comes out only when I > push down the gas. Can be the airmass meter even? What's the weather like? Rain/dry? Air pressure? Temperature? How "new" is your air filter element? SignatureCiao from Holland AlfistaGJ (Gert-Jan) Alfa red 156 SW 1.8 Madeno tuned (2000) Golden Montreal (1973/4) It was dry, but covered with low clouds, low pressure, about 70-75% humidity and 27?C. The air filter was changed with the oil @ 31000km. The car has now 33100km. SignatureJacopo Bolzano, Italia -- Sportwagon 2.5 V6 24V Distinctive > It was dry, but covered with low clouds, low pressure, about 70-75% humidity > and 27?C. > The air filter was changed with the oil @ 31000km. The car has now 33100km. BAD abient circumstances for fine power output! Very low oxygen % due to combination of temp. en air pressure. Could surely be the (a) reason. High air pressure and low(er) temp is perfect. SignatureCiao from Holland AlfistaGJ (Gert-Jan) Alfa red 156 SW 1.8 Madeno tuned (2000) Golden Montreal (1973/4) >> Today, my 156 doesen't feel like other days: between 3500 and 5000 RPMs, >the [quoted text clipped - 15 lines] > >Antti The MAF fault on my 156 V6 caused a serious loss of power at 5000RPM (like a rev limiter) but it did not improve as I put my foot down harder on the gas. The only way to make the car go faster was to select a higher gear. The car absolutely refused to do more than 5000RPM. The fault described by the original poster sounds more like plugs or fuel IMHO. Phil 156 V6 1998 > Today, my 156 doesen't feel like other days: between 3500 and 5000 RPMs, > the engine is something like 'strangled', it has some hesitation in giving > power... finally, a momentary lapse of power. (Pink Floyd enthusiast will > understand me ;-) Probably sounds better on guitar :) > Monday the light 'engine failure' came up, stayed turned on for the whole > day, then yesterday afternoon went out. It's not gone into 'limp home' mode has it? IIRC that tends to run a very rich mixture that might well give the symptoms you describe. OTOH I'd expect it to be on the error list. SignatureCatman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3 Tyger, Tyger Burning Bright (Remove rust to reply) Alfa 116 Giulietta 3.0l (Really) Sprint 1.7 Triumph Speed Triple: Black with extra black bits www.cuore-sportivo.co.uk Maybe you shouldn't fill the tank with kerosene after all... ;-) Neuropean > Maybe you shouldn't fill the tank with kerosene after all... > > ;-) > Neuropean I suppose that with kerosene will go... like an airplane ;-) Oh, for the original post... now Mary runs well, maybe 'cause the outside temp lowered. No more power loss at 5000rpm. SignatureJacopo Bolzano, Italia -- Sportwagon 2.5 V6 24V Distinctive |
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