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[david62]

just picked my 2000v 2.5cdx 65,000miles up..drove fine on way back 50miles..but came to junctions and stalled but always started ,car smelt like cats over working,done paper clip test and code 91 came up which i presume is something to do with o2 sensor? is this a replacement jobby or bad connections..any input from you guys would be of great help many thanx david..ps will post pics up asap of car

[rustym95]

would change it and give car a full service best to be safe than sorry good luck hope yo have many years of driving to together 

[david62]

thanx.. just another thought is there 2 lots of o2 sensors? if thats the case which 1 do i change or just do both?

[Welung666]

Re-do the paperclip test! More likely a 19 not 91.... it is very rare lambdas fail and more likely the crank sensor with it just cutting out like that. A failed lambda would just cause over or under fueling.

Post all the codes you get from the paperclip test as that will help.

[david62]

took car to mate who had a diagnostic tester and came up with gs sensor..changed that for vauxhall one and still same...took for test and wont rev above 3500-4000 revs just holds back and still wont idle...no faults on his tester...o hum..left it wiv him for a few days..determined to get to the bottom of this though..ty david

[rustym95]

check your coil pack, take spark plug out rest it on side of engine (take rest of so engine dont start) see what colour it is if its a nice blue spark it ok if it is yellow or orange its a bad spark, coill packs will work even when they are going, check that out 

[CaptainZok]

check your coil pack, take spark plug out rest it on side of engine (take rest of so engine dont start) see what colour it is if its a nice blue spark it ok if it is yellow or orange its a bad spark, coill packs will work even when they are going, check that out 

Or do it properly using a test plug and firing the dis with Tech2/"My Naff Code Reader".

[rustym95]

better to see it than read it do the old way. u see it not read it.

[david62]

ill give him till 2morrow and if all else fails see if some1 on here would take a look for me..plzzzzzzzzz!!..am in hemel hempstead

[CaptainZok]

better to see it than read it do the old way. u see it not read it.

How is firing a plug in air "better" than testing the HT voltage to see if its adequate to spark under cylinder pressure?

[rustym95]

not in the air on the side, earth'd,

[CaptainZok]

not in the air on the side, earth'd,

So how do you create this vacuum "on the side, earth'd" then?

[rustym95]

what vac i coil pack what vac are uon about, just checking spark nothing els.

[david62]

just so im prepared is there ne good mechanics round hemel hempstead way that may wana take a look at me mig..cheers

[rustym95]

just try it it will work have done it loads of times can tell u lots, blue is good others on way out, i tryed it on tester said nothing wrong but tested it by eye sight and it was not good had red spark, got new 1 works 100 times better, put new 1 in nice blue spark tester did not work.