First start problem

Pushi · Post by **Pushi** » 30 Aug 2018, 14:46

Hi.
Every morning I have a problem with starting the car.
After the ignition the engine starts and 2-3 sec later stalls and stops. Next time starts without any issues.
Maybe fuel pressure? Or immobilizer ring?
'97 v70 b5254t

Thanks

Post by **Clemens** » 30 Aug 2018, 16:02

Have you tried letting the pump orime for a few seconds in position 2 before turning the key all the way? If this works it is fuel related. If not it still could be, or the immo ring

Pushi · Post by **Pushi** » 30 Aug 2018, 16:14

Yes I tried in position II when the pumps noise finished but still the same..
Lets see , need a immo ring order.
Thanks

Post by **misha** » 30 Aug 2018, 16:24

Try it 2-3 times...and 3rd time...after the system is primed...start it.
Like Clemens said....if this helps...it's fuel pressure(check valve to be more specific)....if not...it's immobiliser.
Might be fuel pump relay too.
With Vol-Fcr you will have access to Immobiliser module....check for codes.

Pushi · Post by **Pushi** » 30 Aug 2018, 16:28

misha wrote: ↑30 Aug 2018, 16:24 Try it 2-3 times...and 3rd time...after the system is primed...start it.
Like Clemens said....if this helps...it's fuel pressure(check valve to be more specific)....if not...it's immobiliser.
Might be fuel pump relay too.
With Vol-Fcr you will have access to Immobiliser module....check for codes.

Ok, I'll check in the morning

Pushi · Post by **Pushi** » 31 Aug 2018, 02:38

misha wrote: ↑30 Aug 2018, 16:24 Try it 2-3 times...and 3rd time...after the system is primed...start it.
Like Clemens said....if this helps...it's fuel pressure(check valve to be more specific)....if not...it's immobiliser.
Might be fuel pump relay too.
With Vol-Fcr you will have access to Immobiliser module....check for codes.

Morning.
So, I turned on and off 3 times in position 2 and started the engine. Stalls. After started again and its all ok.

Post by **misha** » 31 Aug 2018, 03:09

If it turns off exactly after 2-3 seconds every time....it's immobiliser.
Could be antenna ring or chip transponder in the key...Do you have only one chipped key?If you have a spare one...try with it.

Without checking the codes for Immo module you will be replacing parts on blind.
One more thing....try to bypass fuel pump relay for 1st start in the morning with a paper clip.
If i'm understanding correctly...this happens ONLY on 1st start up after car sits overnight...right?

Is check engine light(lambda light) ON?

Pushi · Post by **Pushi** » 31 Aug 2018, 03:47

Hi Mischa.
Yes, only just a first start is a problem.
Keys : I have 2 original keys, so I'll try the other one tomorrow morning. The chipped keys is something different?
Check engine lights is not on (thanks God)
Fuel pump relay : how to doing the bypass? This relay located in the main fuse box,near the abs unit ?

Post by **misha** » 31 Aug 2018, 06:58

Yes,chipped keys are different visually than normal(non-chipped) keys.
If your spare key starts and run the engine...it's chipped.
Otherwise,immobiliser will turn the engine off within 2-3 seconds every time since there is no feedback from transponder.
About bypassing fuel pump relay there is a write-up here on MVS.

Pushi · Post by **Pushi** » 31 Aug 2018, 07:48

misha wrote: ↑31 Aug 2018, 06:58 Yes,chipped keys are different visually than normal(non-chipped) keys.
If your spare key starts and run the engine...it's chipped.
Otherwise,immobiliser will turn the engine off within 2-3 seconds every time since there is no feedback from transponder.
About bypassing fuel pump relay there is a write-up here on MVS.

Mischa, I think both keys non-chipped. At the moment I using the better condition one..