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new O2 sensor.
mjwcookie - January 30th, 2012 at 11:05 PM

I have been running my 89' t25 for four months now and find the fuel consumption pretty bad, it also had a flat spot when cold. I have replaced the O2 sensor as reccommended and find the flat spot worse (when cold) but smooth running when warm? bit early to tell on the fuel consumption.

any ideas?

Thanks

mark

vlad01 - February 1st, 2012 at 09:22 PM

MAP sensor? or does it have a MAF? blocked injectors? TPS can cause hesitation.

Since you say it related to temp and bad fuel consumption I recomend you check the coolant temp sensor first though.

mjwcookie - February 1st, 2012 at 09:50 PM

Thanks. i have already changed both temp sensors in the thermostat block of bits. is there another one to change somewhere else? What is the Map or Maf sensor? Injectors are fine. Maybe i should take it to a genuine VW service and get them to plug into the computer. They should be able to tell, just costs a bundle.
mark.

Joel - February 1st, 2012 at 10:12 PM

Quote:
Originally posted by vlad01
MAP sensor? or does it have a MAF?



Air flow meter.
Its 80s VW L-jet cutting edge technology here :lol:

Does it run a single wire o2 sensor? or is it a multiwire heated one?

mjwcookie - February 1st, 2012 at 10:52 PM

Not sure about a heated one, but it is multi wire, two into a squar plug and a single spade bit. 3 wires altogether and fits into the catalytic converter.
Mark

AA003 - February 2nd, 2012 at 06:41 AM

Quote:
Originally posted by mjwcookie
Thanks. i have already changed both temp sensors in the thermostat block of bits. is there another one to change somewhere else? What is the Map or Maf sensor? Injectors are fine. Maybe i should take it to a genuine VW service and get them to plug into the computer. They should be able to tell, just costs a bundle.
mark.


No computer socket on a T3 to plug in, it's Digifant. Take it to a good VW mechanic that has experience with them.

vlad01 - February 2nd, 2012 at 08:56 AM

oh its bosch ECU :fakesniff:

mjwcookie - February 2nd, 2012 at 01:02 PM

is that good or bad that it is bosch.
mark

vlad01 - February 3rd, 2012 at 08:54 AM

User friendliness of bosch ECUs is almost non existant.

I never had much luck getting diagnostic codes from them. :crazy:

AA003 - February 3rd, 2012 at 10:09 AM

Quote:
Originally posted by vlad01I never had much luck getting diagnostic codes from them. :crazy:


These ones don't have any.

vlad01 - February 3rd, 2012 at 11:07 AM

Exactly! what use is that?

Bizarre - February 3rd, 2012 at 02:38 PM

Mark

what do you call bad fuel economy??

My 89 Caravelle (auto) gets 16L/100kms round the city - corner shop runs etc etc and about 11.5L/100kms on a holiday run with 4 people, stuff and a dog.

mjwcookie - February 5th, 2012 at 10:07 PM

the most i have got out of a tank of 50 liters is 360kms. if in town driving then 300-330 liters. i dont think this is very good. I think that is about 14l/100 and 16-17/100 for town. Not the best out of a tank.
mark

Bizarre - February 6th, 2012 at 06:51 AM

Quote:
Originally posted by mjwcookie
I think that is about 14l/100 and 16-17/100 for town. Not the best out of a tank.
mark


I think you a dreaming if you are expecting much better than what you are getting

Is this a manual or auto?
full caravelle of empty shell?

mjwcookie - February 6th, 2012 at 01:49 PM

It is a full caravelle and auto. I have taken out the center seats for convienance. i dont use the aircon at present. The auto is going to be replaced or rebuilt soon. Thanks for your advice.
mark