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YOUR RESEARCHProper warm up procedures
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I have to run my car on hilly terrain if this would make a difference.
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What is the best way to warm up one of these 996's in a normal outdoor temp? Say between 30-80F. To not lug the engine, run slowly in 1st or 2nd at around 3-4K rpm until temp comes up? Or is there something that would work better? I have to run my car on hilly terrain if this would make a difference.
As per manual:
Put the car into gear 10 secs after it is started and do not exceed 4K RPM. Drive normally until warm. TIPs should be driven as soon as it starts.
The owners manual gives some guidance on this subject, but I chose to follow a slightly different warm up procedure.
I start the engine and let it idle until the secondary air injection pump shuts off and the idle slows down and smooths out. Takes less than a minute in most cases.
I find the engine a bit more tractable if I do the above.
After I move off I keep the rpms below 4K and try to keep them below 3.5K until the coolant temp gage needle has been on the '180' mark for a while. In cooler temps these engines can take a while to come fully up to temperature. They carry a lot of coolant and oil and then there is over 400lbs of metal to heat up as well.
If you want to drive off almost immediately there should be no real harm as long as you avoid high rpms and high loads at low rpms at least until the engine is fully warmed up.
Sincerely,
Macster.
Good stuff Macster
I follow your procedures with all my cars. I start the engine every time and let iddle until iddle smooths out and down. Then I drive away and try to keep RPMs under 4k but I have a very nice on ramp to the freeway (less than 1 mile from home) that I always take over 4ks. I think the engine is warmed up by then
I follow similar procedure as Macster.
Open garage.
Start car in garage.
Back out garage.
Get out of car to close garage (no automatic garage door
)
By the time I am back into the car, the idle is usually stabilized and ready to go. From here I keep it under 4k RPM until the temp gauge is close to operating temp.
In a related issue, when I get back from a drive, I like to leave the car out front so I can look at it :^) before I put it in the garage for the night. But it has been bothering me that I start it up cold a few hours later and pop it in the garage. Is this a no-no?
I usually move it out of the garage when it has settled down to its 'normal' idling level. This is for no particular reason other than I enjoy listening to the sound it makes at higher rpms.
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Well no not unless the coolant temp gage is on the 180 mark and has been there for a while.
I can't do it now -- I'm on the road -- but I could post data I have logged that shows how long it takes for my cars' coolant temp from a cold start until it has reached a stable higher temp and it takes more than a mile of driving.
If you want email me and when I get back to the office and my data logs I'll supply you with a PDF that shows the coolant warm up curve of my car in rather mild temps.
These engines carry 4 or more gallons of coolant, 9 quarts or more of engine oil (and I don't know how much drivetrain lubricant) plus the engine alone weighs in after over 400lbs (and maybe 200lbs for the transmission) and they do not warm up very quickly.
Sincerely,
Macster.
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