80series turbo diesel shaking/hunting/idle prob

Submitted: Wednesday, Feb 22, 2006 at 15:11
ThreadID: 31039 Views:4067 Replies:9 FollowUps:1
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Hey Everyone

I have a 80series turbo diesel auto, when at idle in drive or park with brake on or off it develops a shake or it starts hunting. it goes away once i increase rev's or start to accelerate.
Any idea's i've talked to that many people about it, i hope someone has had the same problem and knows how fix? I originally thought injector pump but apparently not because its not leaking, maybe injectors? engine and gearbox mounts are all ok.

Appriciate any responses.

Cheers
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Reply By: BenSpoon - Wednesday, Feb 22, 2006 at 16:03

Wednesday, Feb 22, 2006 at 16:03
pull the ECU fuse out and pop the bonnet. Check the air hose between air box and engine for any splits or leaks. make sure all hoses are on the air box. Go replace the fuse and fire the engine up and see if it still does it.
AnswerID: 156493

Reply By: TagsOZ - Wednesday, Feb 22, 2006 at 16:10

Wednesday, Feb 22, 2006 at 16:10
Thanks, i'll give it a try tonight and let you know.
Cheers
AnswerID: 156494

Reply By: TagsOZ - Wednesday, Feb 22, 2006 at 18:34

Wednesday, Feb 22, 2006 at 18:34
Hi Ben
Did you mean get a new ECU fuse? or just take it out and then after a little bit put it back in before i start it?
Is the ECU fuse is to buy if i need a new one?

Cheers
AnswerID: 156519

Reply By: Seanny - Wednesday, Feb 22, 2006 at 21:04

Wednesday, Feb 22, 2006 at 21:04
Hi there,

I would look at the idle RPM as well after checking for an air leak as others have suggested.

For a 1HD-T Auto - 800 RPM

For a 1HD-FT Auto - 750 - 850 RPM (multivalve engine)

As well, check idle up speeds for power steering and air conditioning if you have them as these items are often neglected on these engines.

Cheers,

Seanny
AnswerID: 156555

Reply By: TagsOZ - Thursday, Feb 23, 2006 at 00:45

Thursday, Feb 23, 2006 at 00:45
Hi All

Checked the hose and looks to be in pretty good condition.
The other thing with this problem is that it dosent seem to affect the idle speed, it still remains constant at close to 800rpm even when the engine starts to hunt/shake or similar.

Any other thoughts?

Thanks
AnswerID: 156587

Follow Up By: mattlobie - Thursday, Feb 23, 2006 at 01:08

Thursday, Feb 23, 2006 at 01:08
My parents have a similar issue with the Mazda 3 that they bought mid last year. They've had it back at the dealer a few times with no solution. It just started happenning one day after they'd had it for a few months. It doesn't seem to affect the power or drive of the car and it only seems to do it while it's in park. They thought initially that it was the engine mounts, maybe you could check that, but they turned out to be fine. I'll let you know if they ever work it out.

matt
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FollowupID: 410674

Reply By: TagsOZ - Thursday, Feb 23, 2006 at 19:39

Thursday, Feb 23, 2006 at 19:39
any other ideas guys?

Cheers
AnswerID: 156727

Reply By: Seanny - Thursday, Feb 23, 2006 at 22:52

Thursday, Feb 23, 2006 at 22:52
Hi there,

Could you supply the following: What year and model, how many Km, factory turbo or after market, multivalve or not, last fuel filter change or service and the like.

I will cross post to a Cruiser site for you.

cheers,

Sean
AnswerID: 156775

Reply By: Member - DOZER- Friday, Feb 24, 2006 at 07:39

Friday, Feb 24, 2006 at 07:39
Mate, your fuel filter is blocked, change it....and make sure you get a t/d one
Andrew
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AnswerID: 156804

Reply By: TagsOZ - Friday, Feb 24, 2006 at 12:39

Friday, Feb 24, 2006 at 12:39
1991 Factory turbo diesel, non multi valve, auto, 148,000kms, last service about 8000kms ago, dont think fuel filter was done though.

Would a blocked fuel filter be a problem only at idle though?

Thanks Guys
AnswerID: 156857

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