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Hi guys,


Was cruising down the highway minding my own business (2000 model ZD30) and she must have over boosted or something and went into (i'm assuming) limp mode. Had no acceleration and lost most power. anyway, after getting back to normal my speedo just starts jumping all over the place. Not in the mood to worry about it, i just go off the GPS to get me the rest of the way.

 So now i've been driving around a while i've found out the symptoms. It appears that driving up to 60km/h is fine, but anything over 65ks and she starts jumping all over the place again. I'm not so fussed about it cos i know what revs i need for what speed etc but it gets annoying and I have rego in a few months. 

Anyone else have this problem and/or know a solution? 


Thanks for your replies.



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Hi there.

With the limp mode you'll loose all power (no throttle/accelerator). What is getting back to normal means?


I suspect that limp and speedo issues are not related however issues (speedo erratic) like that can be related to bad earth or bad connection or failling sensor or its pole wheel.

Check speedo plug first.



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yeah i don't think the two are related but they just happened to be at the same time. 

Not sure if it was limp mode, but i had no acceleration, and lost about 50km's an hour before i got any power back and even then it took a long time to get back to 110km/h. haven't had the power loss problem since.

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