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Suzuki Grand Vitara 2lt TD rail pressure sensor error/immobiliser error

Posted By btbw Wednesday, October 21, 2009 12:26:30 PM
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Suzuki Grand Vitara 2lt TD rail pressure sensor error/immobiliser...

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btbw
 Posted Thursday, December 17, 2009 2:32:23 PM
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yes unfortunately – garage is reporting that at times is failing to start/stalling out and cant be reved over 2.5k
If its left just ticking over, it will stall out and pop up with the engine management light with the listed code…

Thanks
cork_ie
 Posted Saturday, June 05, 2010 7:46:24 AM
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I know this post is 6 months too late but as it's datamine I thought I would try and set everyone straight.
1) If you connect Tech2 or any other scan tool for that matter when engine is running you will always get the P1517 immobiliser code.
2) The immobiliser will never cut the engine, it might prevent a restart but even if you disconnect the immobiliser box with the engine running it will stay going.
3) I am horrified you needed a new head. Main Dealer recommended kit includes a hydraulic injector puller kit that will pull any injector even 10 tons force. It pulls with a hydraulic doughnut powered by a porta-power type hand pump.
4) I have worked on over 50 GV's with RHZ & RHW engines and have yet to replace a rail press sensor Pressure problems are nearly always rail pressure regulator in rear of high press pump or leaky injector.
5) Despite some earlier post saying there was no monitoring for low pressure feed , in fact there is and it is a warning not to be ignored to change the rear feed pump before it breaks up. There is also a mod for the pipe routing over the rear axle on earlier RHZ's
Hope this is of help to someone.
Angus
 Posted Saturday, June 05, 2010 10:37:59 AM
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cork ie

Just out of interest; where is this primary circuit pressure sensor on any PSA common-rail?

AFAIK it's merely an extrapolation from the FRP sensor signal against the regulator duty cycle - which can be caused by many things other than low primary pressure.

.

cork_ie
 Posted Wednesday, June 09, 2010 7:01:49 PM
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Angus (05/06/2010)
cork ie

Just out of interest; where is thisprimary circuit pressure sensor on any PSA common-rail?

AFAIK it's merely an extrapolation from the FRP sensor signal against the regulator duty cycle - which can becaused by many things other than low primary pressure.


Low fuel pressure is monitored by rail pressure sensor when engine is stopped,it is also tested by activating LP pump with Tech2 and can be clearly seen. An injector would need to have a very serious leak not to hold against 3 Bar pressure,

In addition when engine is running , the pressure regulator unpowered should maintain pressure at about 280 BAR. Pressure above that is obtained by duty cycle of regulator solenoid. Now imagine there is some restriction in the LP fuel supply (or faulty LP pump) , then rate of pressure build up will be slower than if everything is ok.This will set a code.
Angus
 Posted Thursday, June 10, 2010 8:41:52 AM
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.

So it is an, unreliable, extrapolation - exactly as I said.  There's no primary pressure sensor.

.

btbw
 Posted Thursday, June 10, 2010 9:31:49 AM
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for those with an interest - the cutting out issue was in the end linked to a faulty engine ECU... the dealership replaced the immobilizer ecu, to no avail.... however once the engine ecu had been repaired the issue was resolved.

The smaller garage nor myself were wishing to replace the ecu as it had been checked by BBA, but unfortunately it would appear that it was a faulty ECU in the end.
So on top of the new head
2 injectors
Engine & imob ecus

The turbo is on the way out.... if it was evident that this all would have needed the work at day 1 – it would have went to the big scrap heap in the sky.

Cant believe for a car that was running fine... all of the above has been required, and at once...
Jayde1234
 Posted Tuesday, April 15, 2014 2:15:43 AM
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HI ANGUS!you seem to know a lot so I wanted to ask about my problem

My 2007 1.9L Diesel Grand Vitara keeps going into limp mode (usually going 100KMS or a timed basis)

Ive had the turbo boost actuator replaced - didnt fix the problem only stopped it from being on 24/7

The code it is now displaying is

The diesel place have told me
P0235
will cause the problem now. However, Im wondering if i spend 750$ to fix this will it still occur do you think???

The following codes were cleared and non-current when P2035 popped up when it was in limp......
P0571
P7670
P242A


Advice please haha
miketribe
 Posted Tuesday, April 15, 2014 2:49:13 AM
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HI ANGUS!you seem to know a lot so I wanted to ask about my problem


Jayde, welcome to the forum. That is a very unusual start to a posting (not untrue,just unusual).

This thread is years old, please start your own thread giving as many details as possible, i.e.

History of the problem, service records, source of fault codes, live data readings and, if possible scope traces.

Mike



Being in business would be fine, if we didn't need customers.
Eslin13
 Posted Saturday, February 28, 2015 7:11:51 PM
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Hi all,

I have had problems with my 2.0 td grand vitara for the past few months.
It's a 2001 plate.
It is very sluggish to drive , you really have to work the revs to get any kind of power out of the engine.
Sometimes when the engine is cold it will die when you try to pull off..
I've had the erg valve blanked off but it's stiil the same.
Any advice would be appreciated.
Many thanks fellow threaders
Eslin13
SB126
 Posted Sunday, March 01, 2015 3:43:30 AM
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yes read the post above yours

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