No power when cold-Jackaroo

Submitted: Friday, Feb 04, 2005 at 15:01
ThreadID: 20109 Views:3428 Replies:9 FollowUps:8
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Jackaroo 1999 Diesel Automatic
When cold no power and can't get over 40 kmp until temperature reaches standard operating temp. Revs out to around 4000 .Mechanic has replaced injectors ,oil-sensors,temp sensors,had computor bench tested,all ok.New light oil used,re-set valve clearance and rheostat behind accelerator pedal replaced. GMH can't help.New tunit unit had no affect either.
New throttle housing did'nt work. I am getting desperate after $7000 repair bill.
I am happy with all other aspects of the vehicle and don't want to spend another $30k on a new 4WD.
Can any member offer any suggestions ?
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Reply By: Member - Chrispy (NSW) - Friday, Feb 04, 2005 at 15:27

Friday, Feb 04, 2005 at 15:27
Have they looked at the gearbox? Fluid problem? Torque converted slipping? G'box ECU problem? If it's revving out, the engine isn't properly driving something behind it maybe.....
AnswerID: 96662

Follow Up By: Member - Chrispy (NSW) - Friday, Feb 04, 2005 at 15:28

Friday, Feb 04, 2005 at 15:28
(sp) torque convertor
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FollowupID: 355342

Follow Up By: Member - Doug E (NSW) - Saturday, Feb 05, 2005 at 15:11

Saturday, Feb 05, 2005 at 15:11
Thanks chrispy . I will follow up and keep you posted
Deefer
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Reply By: Member - Matt Mu (Perth-WA) - Friday, Feb 04, 2005 at 15:41

Friday, Feb 04, 2005 at 15:41
deefer, obviously this must be very excessive?
The diesel Jackaroos computer intentionaly restricts power untill operating temp is up. But obviously yours is more severe than normal. I do remember it being a funny feeling, pushing the trottle(wire) and having little response, but they definately would get over 40km/h even cold, just wouldnt rev out at all.

Has the mech, just out of interest, looked at the auto at all? The oil might be too heavy and until it warms up you are not getting proper actuation of bands/servos etc?

Goodluck with it!

Matt.

AnswerID: 96664

Reply By: Member - Banjo (SA) - Friday, Feb 04, 2005 at 16:38

Friday, Feb 04, 2005 at 16:38
I've got a manual version of the same beast, same year - I rarely tax the motor and usually only get up to 2500 revs in the city at the most...maybe 3000 and a bit in the bush when towing ...... cold has never been an issue that I've noted... it just seems to be happy..... I'n not into auto's but if you are getting up to 4000 and it's still sluggish in movement it must be the trans oil (or adjustment therein) as others have indicated. Damned sad to hear that you have spent all that $ (though some might be a worthwhile investment for the future).
AnswerID: 96667

Reply By: Member - David 0- Friday, Feb 04, 2005 at 18:29

Friday, Feb 04, 2005 at 18:29
Got to be a transmission problem 4000 rpm in top gear is somewhere around 200k/hr...if it revs to 4000 under load but doesn;t go anywhere it must be tranny. unless u are talking about revving to 4000 in neutral.
AnswerID: 96689

Follow Up By: Member - Doug E (NSW) - Saturday, Feb 05, 2005 at 15:17

Saturday, Feb 05, 2005 at 15:17
Thanks David O
Auto check seems to be the next step
Regards Deefer
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Reply By: Savvas - Friday, Feb 04, 2005 at 21:36

Friday, Feb 04, 2005 at 21:36
Doug,

Exactly what grade and brand engine oil has been used? I know you said new light oil, but what has gone in? It seems to be one symptom of the oil grade issue.

How does it start up when cold?

AnswerID: 96723

Follow Up By: Member - Doug E (NSW) - Saturday, Feb 05, 2005 at 15:15

Saturday, Feb 05, 2005 at 15:15
Thanks Savvas
I always use Mobil#1 synthetic 5w/50,expensive but i like to look after the old girl
Deefer
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FollowupID: 355466

Reply By: Craigjackaroo - Friday, Feb 04, 2005 at 21:46

Friday, Feb 04, 2005 at 21:46
I have a 2000 td auto.
It is extremely sluggish to change gears when cold.
It drops into top going down a hill or just coasting to an intersection
When you hit the intersection and put the foot down you get pretty well nothing for about 5 seconds while it trys to change back. Quite dangerous to those unaware.
To overcome this I manually select 2nd befor hitting intersections so that it is in a better gear when I get there until it warms up.
Just out of interest how does your truck handle the heat?
Mine starts to raise the needle above normal at anything above 30 deg
or 25 deg when towing.

AnswerID: 96724

Follow Up By: Member - Doug E (NSW) - Saturday, Feb 05, 2005 at 15:10

Saturday, Feb 05, 2005 at 15:10
Thanks craigjackaroo,
No problems towing or working hard 4wd. I have fitted an oil cooler and it made a world of difference, but it did overheat before that.
Responses have been excellent following my query and I am back to the mechanic with request to check the transmission
Deefer
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FollowupID: 355464

Follow Up By: StormyKnight - Saturday, Feb 05, 2005 at 18:32

Saturday, Feb 05, 2005 at 18:32
Please let us know the outcome....I have a Prado90 TD auto but no issues like this. It has less power when cold for sure, but will get to 100 without to much bother since we drive out our driveway onto a 100km/h road.

Also shes warmed up in just over 2 minutes from a dead cold start.

I'm just be curious to find out the cause as it may not be a Jackaroo specific problem.

Cheers
Richard
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Reply By: Savvas - Saturday, Feb 05, 2005 at 21:30

Saturday, Feb 05, 2005 at 21:30
Doug,

Have you tried driving it "like a manual" when cold? That is hold the gears, and shift up manually with the transmission selector. I'd be curious to see what happens then. You might want to try it under differing throttle conditions too.

It would be interesting to see if it accelerates ok with 1st held, and so on.

The Hydramatic 4L30E which is in the Jack will hold upshifts to a minimum until the fluid reaches something like 35deg C. I'm not sure of the exact temp.

By the way ... your winter mode button isn't accidentally pressed in, is it?
AnswerID: 96866

Follow Up By: Savvas - Saturday, Feb 05, 2005 at 21:31

Saturday, Feb 05, 2005 at 21:31
PS .. That Hydramatic is in the V6, I'm not sure if the same box is behind the diesel. Possibly not as the transmission selector layout is a little different.
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FollowupID: 355498

Reply By: WWAB - Sunday, Feb 06, 2005 at 19:35

Sunday, Feb 06, 2005 at 19:35
HELLO
JACKAROO HAS A QUICK WARM-UP FUNCTION SWITCH IS LOCATED TOP CENTRE OF DASH,SUGGEST CHECK OWNERS MANU.[SIMILAR TO PATROL 3LT TD]
QUICK WARM-UP WILL OPERATE BY COLD ENGINE TEMP. OR COLD AIR TEMP. SENORS, PROBLEM IS SOME TIMES WIRING OR SENSORS NOT READING.
I HAD PROBLEM WITH QUICK WARM-UP NOT WORKING ON AVERAGE TEMP. DAYS, WAS WORKING ON COLD MORNING AIR TEMP SENORS.
HAD LOOKED AT FINDING FAULT NOT WORTH $$$$.
THIS ERROR WILL NOT NOT SHOW UP ON HOLDEN DEALER COMP. TEST

ALL THE BEST TO FIND THE PROBLEM
AnswerID: 96983

Reply By: Craigjackaroo - Tuesday, Feb 08, 2005 at 21:38

Tuesday, Feb 08, 2005 at 21:38
Hello again Doug
Intersted in hearing alittle more about your earlier overheating problems.
You mentioned fitting an oil cooler.
Was this a transmission oil cooler or an engine oil cooler?
I'm looking to fix my problem, Holden haven't been able to sort it out.
Thanks in advance Craig
Sorry to deviate from your thread subject.
Please keep us informed how you go with your problem.
AnswerID: 97329

Follow Up By: Member - Doug E (NSW) - Thursday, Feb 10, 2005 at 10:56

Thursday, Feb 10, 2005 at 10:56
Craigjackaroo
Overheated engine every time I pulled a van uphill. Engine warning light would come on.3 mths prior I had the radiator flushed by Natrad dealer.
Aprentice had used too much pressure to flush and had expanded the aluminium galleries in the radiator thus restricting the air flow-she then boiled.Gmh did'nt have a clue why it was overheating after they checked thermosat and they could not drive it underload to overheat.
He was honest enough to admit mistake and replaced the whole radiator$1400 worth-problem solved.I then fitted at ransmission cooler as an added safety precaution no further worries.
Regards Doug
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FollowupID: 356191

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