Nissan Primera P12 Idle Issue

 

I am new to this but would welcome some advice.

 

I have a Nissan Primera 2.2dci (2004). For the past 6 months have had the typical idle hunting and loss of power (intermittant limp mode) problems as people say linked to suction control valve (scv).

 

Throughtout the summer not been too much of a problem turn car off and re-start all back to normal, as the weather has got colder starting her in the mornings has become harder so thought really must get scv changed.

 

Well last Thursday went to start her and all she would do was turn over (not firing) everything else all ok. Towed her in to a local garage (not nissan dealer but owner worked for nissan for many years). They have done diognostics and say I need new fuel pump....they are going to get back to me with price today...I can't get my head around this as have done extensive research and everyones saying the same 9 times out of 10 its the scv....am I the 1 out of 10 where it is the fuel pump....How can I check if the scv if working???

 

Hope someone can help

 

Bad news garage quoted £1700 for new fuel pump....they said there was no output fuel pressure, they also said they had checked the suction control valve and that was ok. (dont know what kind of checks can be done???).

 

Oh what to do now......

 

Have printed off info but car is stuck in garage at the moment, located in north cambridgeshire so not alot of choice here. have spoke to a few people I know who have a bit of knowhow about cars but they have never come across this problem. Am worried if I take car away from garage where else to go...local nissan dealer wants to go through all the diagnostics again!!!