Gutless GU 4.8????

[threedogs]

As for the bunny hop when was the last time the Auto if you have one was serviced

[MudRunnerTD]

Have you thought of taking it to a Mechanic ????

^^^ what Bob said.
I'm by no means anything close to an expert on these things but the 4.8 is normally a very reliable donk. I'll assume it is an auto and say that I can't see how a bung engine is going to create a "bunny hop" in a specific gear, especially with the auto.
I would be thinking driveline somewhere. Is it only 3rd that this happens? Does it happen in 4WD, or 2WD only? How long has it been happening? Any other circumstances you can think of?

Sent from my iPhone using Forum Runner

I agree! If it is just a fault code thn the mechanic will take an hour and your done. I had issues with an XR6 a few years ago and it lost all power after having LPG fitted. Was a slug!! Took it back to the LPG installer and he reckoned it was fine! I could not get it to spin the back wheels of the Ute on a dirt road going up hill when it was empty!!! Was nuts! Finally bit the bullet and took it to the dealer. I was braced for the worst!! I had a minor service and the guy found a loom plug disconnected at the back of the engine in the first 5 minutes! Happy days!! Went like sh!t off a shovel when I picked it up!

Sometimes just bight the bullet!

[threedogs]

is there a way you can do this without spending millions on a machine
IE computer leds?

ive checked the temp sensor for the ecu ive heard that these can cause issues. trying to find out what resistance they are meant to be.
Mine is 11ohms cold 11.8 ohms hot.

Found some values if thats the water temp sensor you're on about, cold 20 degrees its 2.1-2.9Kohms
hot as in 90 degrees .236-.260 Kohms
There is a throttle pedal released position learning procedure. You could try disconnectng the battery to re set the ECU
in the diagnostic section if multiple miss fire check engine earths

[Clunk]

Crank angle sensor, O2 sensors

[glennb]

no its a manual.
I would take it to a mechanic but what would i learn from that aside from how to quickly part with a whole heap of money.
Besides that all they do is hook it up to a machine, if it spits out no codes then they do the same as me.... throw parts at it till its fixed.
I find experience is the best key and was thinking thats what these forums are all about.

it seems to have all the symptoms of a blocked fuel filter.
ill try fuel reg next and then go down the lines of TPS and O2.

Cheers

[glennb]

Threedogs^^^

Thanks heaps mate. Some useful info there.

Mine tested cold says 10 ohms hot its at 11.8 ohms

Its going the wrong way for a start so this tells me it may be screwed.

Thanks heaps mate

[Clunk]

take it to supercheap get them to plug their machine into it and tell what, if any codes are coming up. Costs around $25 i think, maybe a little more, maybe less but at least then you won't be scratching around trying to guess what it is along with the rest of us.

does the engine check light come on, does it do it straight from the bat or when it gets warm. Does it only do it in 3rd? Any particular rev range?

[glennb]

take it to supercheap get them to plug their machine into it and tell what, if any codes are coming up. Costs around $25 i think, maybe a little more, maybe less but at least then you won't be scratching around trying to guess what it is along with the rest of us.

does the engine check light come on, does it do it straight from the bat or when it gets warm. Does it only do it in 3rd? Any particular rev range?

yer it seems to be the same cold or hot. no check engine light so that rules out the O2.
Its seems more noticeable in 3rd. I think its because 3rd is the 1:1 gear. You can notice it in the other gears but not as bad.

I think the machine hookup is the way to go. Cheers Bud

[MudRunnerTD]

no its a manual.
I would take it to a mechanic but what would i learn from that aside from how to quickly part with a whole heap of money.
Besides that all they do is hook it up to a machine, if it spits out no codes then they do the same as me.... throw parts at it till its fixed.
I find experience is the best key and was thinking thats what these forums are all about.

it seems to have all the symptoms of a blocked fuel filter.
ill try fuel reg next and then go down the lines of TPS and O2.

Cheers

You don't necessarily need them to throw a heap of time at it but an hour of their time will give you a Scan gauge, a test drive and an educated opinion. Value for money, especially if he nails it immediately which could be very possible.

I NEVER use a dealer, I do all my own servicing on both my Patrols. I appreciate what your saying but sometimes the fast lane is a good place to be!! I put up with my XR6 being a slug for 6 months before biting the bullet. Fixed in 30 minutes

[glennb]

You don't necessarily need them to throw a heap of time at it but an hour of their time will give you a Scan gauge, a test drive and an educated opinion. Value for money, especially if he nails it immediately which could be very possible.

I NEVER use a dealer, I do all my own servicing on both my Patrols. I appreciate what your saying but sometimes the fast lane is a good place to be!! I put up with my XR6 being a slug for 6 months before biting the bullet. Fixed in 30 minutes

Yer i agree there mate. Just been stung by mechanics before. Not sure what its like over where you are but it seems over here they see you rock up with a 4WD and just assume you have a heap of money to spend.
Im one of these guys that likes to get in and have a go too. nothing more satisfying that fixing something yourself and saving some bucks along the way.
guess thats a bit hard now days though with everything relying on computers.

Thanks Heaps for the input anyway

Cheers