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G'day people,

I'm having a problem with my hicas. I've tried searching for it in other threads but nothing to really match.

Well, my hicas pump sometimes plays up when i take the key from the ignition and have the car running on the turbo timer. a loud pumping/knocking noise comes from the hicas pump and on closer inspection you can see the pump convulse every time it 'pumps'. Also, when the timer is running and the fuel pump primes, it starts to 'pump' and make noises then stops when the fuel pump has finished priming. it does not do this all the time though. I've also noticed that if i have my headlights on and then take the key out of the ignition with the turbo timer on, the problem will occur until i turn the headlights off, but even this sometimes doesnt work and it will keep pumping and make the knocking noise. and lastly, it will also occur when i press my foot on the brake pedal with the turbo timer on. Sounds like an electrical problem but not sure.

I hope this helps

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https://www.sau.com.au/forums/topic/170383-hicas-is-playing-up-r32-gtr/
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How old is the battery?

good question. i'm guessing its old. i've had the car for around a year and 4 months. i have never changed the battery, though it has been push started once :P and i have to start my car at least once every third day or the cranking sounds really slow and tired.

if it helps, when i took my aircon condenser out i undone the rubber hoses that go to the power steering cooling tube (thin pipe with heat sink fins at front) and in the morning when i woke up there was fluid on the ground. i had to top up the reservoir.

yeah, i'll get a new battery. you mentioned the speedo cable. i seem to have the speedo 'boogie', the needle jumping around under 20 km/h and

at high speeds the needle pausing then going again. bugger

yeh mines does the EXACT same thing....!!! well all before i put the new one in, although it still didnt fix the pausing at high speeds. It must be the cluster, or maybe something on the transmission side of the cable, NFI! When you figure it out let me know!

  • 10 years later...

talk about bringing up an old thread... after believing i had a fuel pump issue because of this "pump" and "knock" on ignition/prime, i changed the fuel pump... problem still existed, decided to have a look under the back of the car and feel around to realise its the hicas motor. I took the plug out the hicas motor and "pump" and "knock" disappeared. Did anyone of any luck with sorting this out? was it a battery or something else... all signs are pointing to faulty hicas motor as car has developed a shake at higher speeds which i couldn't locate previously but don't want to replace motor for no reason if there is another simple fix

 

thanks,

 

Mark

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