Advice /suggestions

[Johnboy78]

Hi guys car has developed a problem, was running fine ,went to supermarket came out car wouldn't start,then it would fire briefly before dying again ,checked Maf sensor and fuel rail pressure it's getting fuel ,the only thing different is the shift up light for auto trans is on ? Car is 2.0 auto c70 they're were no issues at all on journey to supermarket ,no noises bangs or warning lights ,as always any help/suggestions greatly appreciated

jOHN

[Doingitsideways]

If it fires then dies immediately, that points toward an immobiliser/key problem.

Do you have a spare key to try?

Auto 'box light would be unrelated though, maybe you've pressed "W" as my missus found out the other day, that makes the light come on.
The light tends to flash with a gearbox fault

[Johnboy78]

Thanks Steve yeah I tried it with the other key ,same story mate ,but the normal set was laying on the pass seat when I tried it ,will try again just with the spare see what happens yeah may have pressed it by mistake fingers crossed as its not flashing just on when trying to start the car

[Johnboy78]

Tried different keys Steve ,my mechanic put code reader on and no faults showing ? He thought g/box actuartor ? He unplugged main plug to gbox and up arrow started flashing ,put back on a and it stopped ,anybody any suggestions before I bin it ,seriously had enough of this car now ! As before car turning over but will not start ,car briefly starts then switches of ,mechanic had the car running ,switched it of then Same problem ??

[Doingitsideways]

Gearbox inhibitor would prevent engine turning over at all if not in P or N.

My best guesses if no codes are either antenna ring on the ignition barrel not picking up the code from the key, or crank sensor.
Not sure if the latter would throw a code, but both reasonably common failures.

[Johnboy78]

Hi Steve gearbox inhibitor still working ,mechanic is convinced it's gbox related I have had what you would call hard shifts but no excessive, trans fluid is brown in colour too ,was looking at replacement box as well as tcm's all cost prohibitive I'm afraid so its getting parked in drive till summer if cannot nail down fail it will be joing the many other c70's in the scrappers ,know I know why so many are there !,can only thank you for your advice over the last 7 months Steve ,if it goes for scrap there will be a nice set of BBS alloys and black interior going if you know any one who could use them ,thanks again fella

[Doingitsideways]

Would be a crying shame to see it broken.

Honestly, I can't stress this enough, a gearbox fault wouldn't stop the engine starting. Perhaps how it drives, but not whether or not it starts.
If your mechanic says so, he's just plain wrong.
As long as the engine cranks in P and N, the inhibitor is working.

My Money's on the antenna ring or crank sensor.

[Blackdog]

I second the ring antenna.

[Johnboy78]

Yeah thanks guys my own gut is telling me it ain't the box ,he has a VDU reader and couldn't get faults up ,I would dearly love to keep it as when its running its a great motor that I've spent a bit fair bit on ,so guys how do I check the ring antenna and would it show up on scanning ? ,I really don't want to lay it up overt something stupid or simple ,thanks again guys

[Blackdog]

pm sent but others please feel free to chip in.

[Johnboy78]

P.m sent m8

[Johnboy78]

Thanks to the two Steve's prob sorted will order new part in morning ,thanks again lads very much appreciated

John

[Johnboy78]

Just to add to above new part ordered from Volvo £34 which isn't as bad I thought ,thanks again guys
John

[Johnboy78]

Car chucked it again ! Tried trick with key no joy was on way to get parts too ,so I've added crank sensor to the antenna ring hopefully cures the problem !

[Johnboy78]

Hi guys just in case it helps fellow members of c70 after replacing ring antenna and crankshaft sensor both good suggestion it turned out to be fuel pump regulator ,hope this may be of help to other members

[Doingitsideways]

Ah well.

So was it the fuel pressure regulator or the fuel pump relay?

[Johnboy78]

Hi Steve ,fuel pump relay bypassed it and it fired right up sorry I wrote regulator its a big square red one in Fues box on right hand side of engine bay

[Ayrshore]

Good to hear it's sorted.