- Thread starter mart
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Back in the day I had a 96 Ford Cougar with the 2.5 v6 Duratec petrol lump in it.
It had zero engine braking and made a weird moaning noise on closing the throttle that they called 'moosing' on the forum.
The fix for' moosing ' was to restrict the idle air feed from a 1/2" pipe down to about 1/4" with a bit of extra smaller tube inside it + a hose clip to tweak the result.
Moosing stopped and I also got decent engine braking for free.
The point of the above is check your idle circuit (if any) for blockages, decayed hoses, engine breather gauzes etc. If there is no butterfly valve the idle fuel feed is too high
Myles1970
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it could still be a seized caliper.... combined with engine breaking (ie. there will be a small amount of engine braking anyway, which will become more apparent when combined with seized rolling components). Probably worth jacking it up to check rolling resistance of each wheel
From about the mid 90s on it has been intentional to prevent the throttle or injection pump in the case of diesel shutting too fast for emmisions, I'm old enough to remember dampers that acted on injection pump throttle levers and in the case of a petrol this would be done through the ecu, either with the IAC valve or fly by wire throttle.
Does your engine have an intake throttle? some diesels have.
Does your engine have an intake throttle? some diesels have.
mart
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It's a diesel
That I know.
Somewhere between 1966 and 2020 yours was made with some form or other of diesel engine.
So to answer your question YES
brightspark
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my norton used to stop on a tanner if you backed the throttle off .drop a gear without revving it up and the back wheel would lock the crank was massive and heavy
Morrisman
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If I follow cars down big hills I'm watching brake lights all the way, but I have to keep my throttle open a bit else I would grind to a halt. I've never had a bike quite like it, mainly had Jap fours in the past though.
Morrisman
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My t bucket had a V6 Essex Ford motor in it, coming into bends, back off the throttle, and the auto-box would downshift, every time. Plenty of engine braking in that thing, but the handling and ride was just too hairy for my liking. I moved it on and started another project.
mart
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As mentioned in OP if I put it in to neutral the 'braking effect' does not happen'. This eliminates caliper, or tyres being under inflated for example. It runs free with no resistance at all.
octo0072000
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has the corolla got handbrake inside the rear discs or not if so brake lining inside the disc or drum can come loose and jam up you need to jack up each corner after a good run and spin each wheel get another person to press brake pedal on and off handbrake on and off as well the brake pad sliders do seize up and stick
Gareth J
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Don't know what inlet manifold gubbins this vehicle will have but, if the exhaust side is not unduly restricted, the inlet side could be.
Unlikely to be permanently blocked as it wouldn't "go" either. But maybe a vacuum or servo operated throttle plate/swirl flap system is on the blink and closing too early/hard. Once you've sussed out if such gizmos exist, you could test the idea by removing linkages/input controls and wire them open and seeing if it makes a difference.
Unlikely to be permanently blocked as it wouldn't "go" either. But maybe a vacuum or servo operated throttle plate/swirl flap system is on the blink and closing too early/hard. Once you've sussed out if such gizmos exist, you could test the idea by removing linkages/input controls and wire them open and seeing if it makes a difference.
octo0072000
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another problem with the holding back could be blocked or blocking up DPF would act like holding back giving engine braking
