R34 Gtr Mfd Not Reading Boost ?

[slo 10z]

Hey people ?

My mfd is not reading boost, everything else in the mfd is working fine but the boost just doesn't read what so ever .... Any thought why it wouldn't be ? Where do I start to look to solve this issue ? Any help be appreciated.

Thanks

[wedge_r34gtr]

100% cracked boost hose. check your hoses & vacuum lines

[iwanta34gtr]

Also check your actual boost sensor unit itself, there are 3 points in there which the joints go dry - common fault.

[slo 10z]

Cheers guys I will check it out tomoz

[GTR-N1]

iwanta34gtr fixed mine

dry joints are in the sensor unit between the firewall and strut on the driver's side > Chris soldered them pronto

[slo 10z]

Sorry this may sound silly but wht do you mean by dry joints in the sensor ?

[Hadouken]

the solder joints loose their conductivity by being old and cracking, this then causes problems and when resoldered you have a fresh connection

[slo 10z]

Thanks for your help guys.... Turns out the boost line had broken of the sensor in between drivers side strut tower and fire wall ... Just a case of slipping it back on and it's all go again ?

[Aqua]

Sorry for digging old post, my boost gauge on the MFD is working sometimes, usually doesnt work when it first starts up, then starts working after 10 or so mins, sometimes it disappear and comes alive again. Would it be the same case e.g. boost hose and/or boost sensor issues?

Cheers

[scotty nm35]

http://www.sau.com.au/forums/topic/297345-m35-factory-boost-gauge-repair/?hl=%2Bboost+%2Bsensor+%2Brepair#entry4953193

Just re-solder the 3 pads for the plug, they become loose over time.

[Aqua]

http://www.sau.com.au/forums/topic/297345-m35-factory-boost-gauge-repair/?hl=%2Bboost+%2Bsensor+%2Brepair#entry4953193

Just re-solder the 3 pads for the plug, they become loose over time.

have no experience nor tools in soldering... thanks tho! I will see what I can do!

[ShortCircuit]

Sorry for the bump

Quick question - I repaired my boost sensor and it worked fine for a few months and has now stopped reading boost. The gauge will display around -3 to -5mmhg and sometimes it will flicker on this reading.

I've tried to resolder the sensor 3 times now and I've had no luck in getting it working. I'm looking at purchasing another sensor but need some advice on the OEM part number. I've also noticed the boost sensor for an RB25 (I'm guessing this was off an R34 model ) looks awfully similar. Does anyone know if they are exactly the same?

http://www.ebay.com.au/itm/JDM-Nissan-Skyline-R34-Rb25-Det-Neo-6-Turbo-Map-Boost-Solenoid-Sensor-Oem-/111900794667?hash=item1a0dce9f2b:g:5dEAAOSwPc9WupCA

If anyone has one for sale which works, hit me up!

[ShortCircuit]

Just an update for anyone reading this with the same issue. I bought a replacement boost sensor from kudos motorsport. I also found that my boost line had a split in it. I've now replaced both items and the car is working perfectly.