Just got back from Lanzarote and noticed my tax/mot have run out.

I desperately want to get them sorted as quick as poss so i can drive the Z, thing is, i have 2 duff O2 sensors and some coming from states to replace them.

Am i correct in assuming a Z would have no chance on the emissions with the O2's playing up? I can't remember at what revs they check, if it's just tick over they're not used are they?

 

Anywho the stupidest question award goes to me, just im desperate to drive it after being away a while!!!

Rob

 

The temporary solution regarding emmissions testing is to pull off a hose and tuck it away out of sight and you'll get perfect emmission results. The hose to pull off connects to the balancing bar I believe but wait till someone from the forum can confirm this.

 

I'll look at the engine later on tonight and tell you exactly which one if confirmation isn't given.

 

Laterz

 

Van

Yup - pull the tiny hose that connects the balance bar to the fuel dampener (drivers side end of the balance bar, you'll see the one). Just whip it off both ends and then they can't spot a hose being disconnected, because it just isn't there.. ;) (it's only about 5cm long)

 

Oh and btw - I've seen that drop CO levels by 5.4% before now ;)

Originally posted by aaronjb

Yup - pull the tiny hose that connects the balance bar to the fuel dampener (drivers side end of the balance bar, you'll see the one). Just whip it off both ends and then they can't spot a hose being disconnected, because it just isn't there.. ;) (it's only about 5cm long)

 

Oh and btw - I've seen that drop CO levels by 5.4% before now ;)

 

even if you disconnect it, you cant fail a vehicle for having a hose off ;) as long as the emission results are in spec, thats it!!

Cheers for the reply's, i will do that.

But do yo think that would be enough with no O2 sensors, i get code 33 ( one i shorted out opps..) so it's not using any input from them whatsoever, and will be pretty rich...

You should be ok if you disconnect the O2 sensors. They don't affect the mixture that much. If it is running rich, pull the dampener hose off - trust me I've SEEN it work ;) The CO just rolls down :D

 

CheerZ,

 

Andy

LoL, cheers boys, i'll give it a go.

As i say i've already ordered some i just can't wait a week or so!!

I just look forward to loosing a few spanners down there tryin to get the babies out. :)

Rob

 

I need to also change my O2 sensors, at least I think so. Please let me know how it goes when you change yours as I'd like to know how tricky it is and what to watch out for. I've heard that you need a special spanner thingie.

 

Cheers

 

Van

i have just took my car, a 1989 tt auto jap import, for our first mot together and i dont think it done to bad.a split wiper blade, a lost rear foglight? and the emissions. the co reading was0.91% (limit - 3.5%) but the hc was 1712 (limit - 1200) ppm will taking them 2 pipes off the o2 sensors? work for me aswell and where are they? also the mechanic said the car may be missing or backfiring! I've been having trouble with the car since i got it a couple of weeks ago with it hesitating and wanting to stall at every opportunity, i have been told it may be running on 5 and after looking some of the wires are a bit dodgy to the coils. also been told my cats could be up the spout! i am going mad i need someone to look at her and tell me exactly what i have to do!!!!!

Marcus

 

Where abouts are you? If you are close to Derby I could take a look for you- I am NOT the most knowledgeable however. You may want to take it to Zedworld in Tamworth or Duffman's in Preston- possibly too far for you.

 

If you need my assistance let me know.

 

Van

Originally posted by MARCUS

the co reading was0.91% (limit - 3.5%) but the hc was 1712 (limit - 1200)

 

ok, make sure they have done this correctly:

 

if the vehicle passes the CO at idle (which yours has) but the HC is too high, then the HC is required to be retested at 2500 rpm, if the HC is then within the limit (almost certainly will be unless youve got a severe misfire) then the vehicle will PASS!

the emissions were tested at idle and 2500rpm but still failed so he tried it with all four pipes but that was the best reading he got

Could it be one cylinder is not running because of loose/poor fitting coil pack???

thanks for your help i think you may have somthing im but not very mechanically minded! would running on 5 cause the emissions to rocket on hc then? ihave been having trouble with the wires to the sparks/coils, they are brittle and any pressure tends to cut one spark/cylinder out is this likely to be the problem.

Running on 5 will make the hc readings sky rocket but you said he tried all 4 exhaust pipes. That means only one side would of the exhaust would be high, or do the pipes join on a stock exhaust system?