06 3.0 Sport engine quit - Ranger-Forums - The Ultimate Ford Ranger Resource


2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 08-08-2017
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06 3.0 Sport engine quit

I have a 2006 Ranger Sport 3.0 liter with 130,000 miles on it, was driving it and it quit with no warning lights or noises. I tried to re start it and the starter engages but it won't turn over, as if the motor is seized up. Plenty of oil, battery seem to be ok, passes load test. I cannot get a socket on the crank pulley to see if it will turn by hand, BAFFLED!!!:
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Old 08-08-2017
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Welcome to the forum


What is the battery Voltage?

If you don't have a volt meter turn on the heater fan to High, then turn on the head lights and wipers to Fast
See if wipers are slow and head lights dim, if so you lost alternator and maybe battery with it
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Old 08-09-2017
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Thanks Ron, I did check the battery and it checks out, and also tried jumping it as well. I pulled the belt and all of the accessories do spin freely, however the crank seems to be locked in position. Starting to think it spun a bearing. I also performed a battery load test that showed the battery was good.
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Old 08-14-2017
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You will have to take the fan and fan shroud ( if equipped ) off to get a socket and breaker bar on the crank bolt to make sure the engine turns over.

Do not spin the engine reverse of the normal rotation
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Old 08-14-2017
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Originally Posted by EaOutlaw View Post
...................

Do not spin the engine reverse of the normal rotation
????


Yes, get a wrench on the crank to see if it moves, in either direction.
If it does move a bit then pull out all the spark plugs
Should spin fairly easy with no compression.

3.0l Vulcan engine is a non-interference engine so valves and pistons can not touch if timing chain should break.

yes, spun main bearing would cause crank to be welded to block and seized up
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Old 08-15-2017
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Quote:
Originally Posted by RonD View Post
????


Yes, get a wrench on the crank to see if it moves, in either direction.
If it does move a bit then pull out all the spark plugs
Should spin fairly easy with no compression.

3.0l Vulcan engine is a non-interference engine so valves and pistons can not touch if timing chain should break.

yes, spun main bearing would cause crank to be welded to block and seized up

I do not know enough about every engine known to man to suggest anyone to rotate it opposite from normal rotation, some engines can be damaged if rotated reverse.
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Old 08-15-2017
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Icon14

Quote:
Originally Posted by RonD View Post
????


Yes, get a wrench on the crank to see if it moves, in either direction.
If it does move a bit then pull out all the spark plugs
Should spin fairly easy with no compression.

3.0l Vulcan engine is a non-interference engine so valves and pistons can not touch if timing chain should break.

yes, spun main bearing would cause crank to be welded to block and seized up
Thanks for the info, as soon as my work schedule allows I will remove the fan and shroud and try to rotate the crank.
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Old 08-15-2017
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Originally Posted by EaOutlaw View Post
I do not know enough about every engine known to man to suggest anyone to rotate it opposite from normal rotation, some engines can be damaged if rotated reverse.
Don't think there is one.
It is just mechanical parts, and can rotate in either direction.
If you ever damaged a piston engine by rotating it backwards then it was already damaged, you just found the problem by rotating it backwards.

The older diesels could startup backwards, lol, a bad thing if you let it run because oil pump only pumps in correct direction, but sounded like crap so most people would shut it off.

And some carb engines could spin backwards(short time) or forwards after shutoff if cylinders were hot enough, called "run on" or "dieseling" from gasoline self igniting in the hot cylinders

But as far as turning an engine by hand no worries, either direction is fine
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Old 08-15-2017
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Just one example of many The 2.3 DOHC Duratec can be damaged by turning it backwards.

When using the crankshaft bolt to spin a duratec engine over backwards this could lead to the bolt loosening releasing the tension on the friction washer causing the engine to get out of time. ( thus causing engine damage )

Yes it should require more force than spinning a engine over by hand with the plugs removed to loosen this crank bolt but why risk anyone's engine with a bad suggestion of saying it is OK to spin any engine over backwards.

Any engine with a timing chain and guides or a engine with a timing belt should not be turned over backwards.

The chain and guides are designed for rotation in only one direction, rotating any of these engines backwards could easily brake a timing chain guide.

The 2.3 DOHC Duratec has a ratcheting chain tensioner rotating this engine backwards could cause damage to the tensioner.

I am pretty sure when you read damage to engine you only locked in on piston to valve clearance. ( which has nothing to do why I only ever spin any engine in the rotation it was designed to rotate )

many engines even ones with timing belts could jump time when rotating the engine backwards.

The only type of engine I can think of that is OK to turn backwards by hand only is one that just has a timing chain and gears with no tensioner like a old small block chevy.

Anyone that owns and maintains their own vehicle should know what way the engine rotates and only spin that engine in the normal direction of rotation.

I would much rather explain to people why they should do this than explain why their engine now has to be taken apart and repaired because of a foolish idea on my part.
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Old 08-15-2017
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To the OP.
I've turned my Vulcan over with out having to remove the shroud, but removing the air intake tube does make it easier.
Put you socket on the big nut and add the adapter, ratchet etc, after the fact.(can't remember what size of socket it is).
I used a 1/2 to 3/8 adapter _ a short extension and then a 3/8 ratchet.
If you try to put the socket on with everything on it, you won't get it in.

Last edited by Jeff R 1; 08-15-2017 at 02:25 PM.
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