Hi and welcome.
Simplest cause of lurching is idle speed too high. Stalling is likely just poor state of tune. Sounds to me like it needs a good service and tune up and someone has wound up the idle to keep it running.
Give it a service and tune up. Tune it to idle smoothly at the idle speed specified for a manual car, if you tune it at the higher setting for automatics you will hide poor running. Wind the idle up to the correct setting for an auto once it is running nicely.
Tinweevil
Concerns with 1850HL Auto
1978 Pageant Sprint - the rustomite, 1972 Spitfire IV - sprintfire project, 1968 Valencia GT6 II - little Blue, 1980 Vermillion 1500HL - resting. 1974 Sienna 1500TC, Mrs Weevils big brown.
Re: Concerns with 1850HL Auto
Following on from Tin's response, how low is too low?ojsmith wrote:when coming to a halt in D or R revs drop too low and engine may stall. idling speed in N or P are fine
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1300dolly
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Jon Tilson
- Guest contributor
- Posts: 11179
- Joined: Tue Oct 03, 2006 9:45 pm
- Location: Middlesex
My limited...
experience with 1850 autos...mostly owned by Rob Grainger...
is that they work best at 750 rpm. The heavier flywheel and torque converter means they will take the slower idle speed smoothly that seems to make manual 1850's a bit rough below 850.
FWIW sprints with lightned flywheels generally need 1000 rpm.
Jonners
is that they work best at 750 rpm. The heavier flywheel and torque converter means they will take the slower idle speed smoothly that seems to make manual 1850's a bit rough below 850.
FWIW sprints with lightned flywheels generally need 1000 rpm.
Jonners
Note from Admin: sadly Jon passed away in February 2018 but his humour and wealth of knowledge will be fondly remembered by all. RIP Jonners.