help - 80 series performance

Submitted: Wednesday, Jan 29, 2003 at 22:26
ThreadID: 3145 Views:1479 Replies:5 FollowUps:4
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I was hoping someone maybe able to help with my performance problem. I have recently bought a modified dual cab 80 series 1997 ute, and over the last 2 months its performance has decreased on highway especially up hills and around town - it's like its lost a whole gear. It has done 150k and the injectors have not been done yet, would they be due? I have checked my snorkle and it is clear and my air filter is ok. I have also replaced the fuel filter and dropped fuel out of both tanks and they were clean. I bought some of the C.E.M Flushing Oil Concentrate and ran it through my engine proir to its last oil change and have been using CEM cleanpower in the fuel for the last 600kms and no noticiable effect. I was maybe thinking pump timing (hopefully not the pump itself) - any thoughts????

Gearbox dramas:
It also has a clicky grinding noise when at idle which dissapears when the clutch is depressed?? The most annoying thing is its whining noise when in 1st, 2nd and slightly 3rd when acelerating and especially decelerating, say around a corner at a certain rev range (low). I don't have a tacho so I can't specify. It sounds nasty but a mechanic said nothing to worry about, just old parts on new. It also hops & shudders when taking off in 1st and especially reverse and especially under load, one mechanic said its just the cruisers and another said a pitted part?? in the gearbox that is gripping.

Any ideas would be greatly appreciated... - this ExplorOz forum is awesome!!!
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Reply By: Justin - Wednesday, Jan 29, 2003 at 22:32

Wednesday, Jan 29, 2003 at 22:32
forgot to say - 1hz diesel no turbo
AnswerID: 12112

Follow Up By: Paul - Thursday, Jan 30, 2003 at 21:33

Thursday, Jan 30, 2003 at 21:33
Justin - yes i can help you with your lack of performance in the cruiser - BUY A REAL 4WD!!
FollowupID: 7072

Reply By: Truckster - Wednesday, Jan 29, 2003 at 22:39

Wednesday, Jan 29, 2003 at 22:39
Could it have been fixed up just to run long enough to sell??

Have you had it serviced, and checked by NRMA/RACV etc? or a reputable 4wd shop?????

Another mechanic " dont worry about it mate!" I HATE THAT!!!!

But it could be old on new if the job was half done.
AnswerID: 12113

Reply By: royce - Wednesday, Jan 29, 2003 at 23:33

Wednesday, Jan 29, 2003 at 23:33
Is it blowing black smoke when you accellerate? Then injectors. Take it to a diesel specialist and get an opinion, then go to another. Sound like you can't leave it like it is. Belts and pulleys tight? Mountings all solid underneath? Clutch okay? I'm no mechanic.... I know the feeling good luck. Royce
AnswerID: 12122

Follow Up By: Justin - Thursday, Jan 30, 2003 at 09:18

Thursday, Jan 30, 2003 at 09:18
royce, no black smoke - thats the strange thing, so I thought it may not be the injectors. I have taken it to 2 diesel specialists and they both want to replace the injectors and then have a look at other things if injectors don't fix the problem, but why do injectors if thats not the problem? I am having the pump timing checked today and we'll see if thats the problem. As for belts and pulleys and have not checked, but recently I replaced the A/C belt and thought I may have tightened it up too much, but I don't know if that would effect the performance? And again I have not checked mountings underneith. Either the clutch and/or the gearbox is not okay but do you think this would effect its performance?

Thanks for your input
FollowupID: 7019

Reply By: tour boy - Thursday, Jan 30, 2003 at 07:00

Thursday, Jan 30, 2003 at 07:00
hi, sounds like clutch shudder (usually worse in reverse). The noise in the box sounds like the rollover in the idler gear pretty normal every 80 series I've owned has done it (some louder than others)
The whine sounds like the preload in the rear diff.

Hope that helps.
AnswerID: 12125

Follow Up By: Justin - Thursday, Jan 30, 2003 at 09:19

Thursday, Jan 30, 2003 at 09:19
Thanks tour boy, having the mechanic check the pump timing and have a look at the gearbox today so we'll see how it goes
FollowupID: 7020

Reply By: tour boy - Thursday, Jan 30, 2003 at 11:27

Thursday, Jan 30, 2003 at 11:27
I forgot to mention the quickest way to tell if its the rollover inthe box, is to idle along in 1st gear on level ground and it will growl and snarl (for want of a better description). Most of the time it's more of an annoyance than a problem.
I know of an ex SRA 80 series that has done about 600,000km, never been touched, only serviced every 50,000km if its lucky and the gearbox sounds like a chain driven tractor!!
If yours doesn't sound that bad, don't stress too much. I wouldn't.

Hope you get some piece of mind from your mechanic.
AnswerID: 12148

Follow Up By: Member - Mal B - Friday, Jan 31, 2003 at 17:16

Friday, Jan 31, 2003 at 17:16
have a look at your exhaust may be partley blocked. with the motor at about 1000 rpm tap the muffler reasoably hard see if any carbon ect comes out the back drive safely mal
FollowupID: 7110

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