Starting Problem

[steve 0]

Hi guys in need of a little help my 1999 mk1 2.3 ghia auto as trouble starting when the engine is warm, I've taken it for a diog, all he did was give the throttle body a clean and test the emissions all ok, I've looked at all the air pipes and renewed with new if needed I did see a pipe going into a pump think is called a piersburg secoundary air pump but their is only one pipe going to it can someone help with this as dont know if this is wright( will it cause the problem I'm getting if this is gone). I think this pump is for the cat warm up but not sure...

 

parts fitted to my gal last year....

 

plugs, coilpacks, heater switch, new exhaust including cat and 02 sensor, new throttle sensor and secoundhand throttle body and new maf..

 

thanks and happy new year, steve

[MadBaz]

The secondary air pump should have one pipe in from a coke tin sized filter, and one out to the exhaust, there is also a small diameter vacuum pipe on a valve nearby. If the emissions are okay then the pump is working, it should run for the first 3 minutes when starting from cold. Whether working or not it wouldn't affect starting.

 

Hope this helps, or at least rules it out.

 

Regards

[cyborg]

Hi guys in need of a little help my 1999 mk1 2.3 ghia auto as trouble starting when the engine is warm, I've taken it for a diog, all he did was give the throttle body a clean and test the emissions all ok, I've looked at all the air pipes and renewed with new if needed I did see a pipe going into a pump think is called a piersburg secoundary air pump but their is only one pipe going to it can someone help with this as dont know if this is wright( will it cause the problem I'm getting if this is gone). I think this pump is for the cat warm up but not sure...

 

parts fitted to my gal last year....

 

plugs, coilpacks, heater switch, new exhaust including cat and 02 sensor, new throttle sensor and secoundhand throttle body and new maf..

 

thanks and happy new year, steve

 

hi there,

 

First off if it happens again disconnect the maf so it goes to default programme and see if it starts if it does you have answer if doesn't .

,Check If the vacum hose is connected if regulator has failed if not try replaceing the fuel pressure regulator on end of fuel rail

WARNING not sure how savey you are. so should you replace regulator ensure you disconnect battery ,do in a well ventilated area

and warn general public not to come near when messing with highly flamible combustables.

 

happy new year cyborg.

 

[steve 0]

thanks for the reply's, when the problem is evident (i.e when it's warm) I have disconnected the maf and she will start better, although it idles irratically it wont cut-out until the maf is reconnected ,is it the maf or some thing else as I put a new maf on it 6 months ago was also told it could be the inlet manifold as you can tell I have no idea with this problem. when it comes to the fuel I thought it would misfire if the problem was with that..

 

Thanks again chaps all help is appreciated...

[NikpV]

thanks for the reply's, when the problem is evident (i.e when it's warm) I have disconnected the maf and she will start better, although it idles irratically it wont cut-out until the maf is reconnected ,is it the maf or some thing else as I put a new maf on it 6 months ago was also told it could be the inlet manifold as you can tell I have no idea with this problem. when it comes to the fuel I thought it would misfire if the problem was with that..

 

Thanks again chaps all help is appreciated...

 

possibly relay 27 sticking when warm - IIRC there is a faq about this something about intermittent cut out and starting problems??

[steve 0]

Hi guys just an update here I've looked into all the info you've given, so thanks for that, i've now taken the gal to a garage and they have now said that the ECU needs a remap as the gal as no error codes, but I'm not sure if a replacment ecu might be best then remap it... your input would be helpful.... thanks again. Edited June 16, 2012 by steve 0