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
Mark Wilson
78 bay window, 82 bay Westy. T3 Caravelle GL 89 on the road.
Now in Victoria.
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.
71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE
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.
Mark Wilson
78 bay window, 82 bay Westy. T3 Caravelle GL 89 on the road.
Now in Victoria.
vlad01 wrote:MAP sensor? or does it have a MAF?
Air flow meter.
Its 80s VW L-jet cutting edge technology here
😂
Does it run a single wire o2 sensor? or is it a multiwire heated one?
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
Mark Wilson
78 bay window, 82 bay Westy. T3 Caravelle GL 89 on the road.
Now in Victoria.
mjwcookie wrote: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.
I read it on samba, so it must be correct.
Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂
oh its bosch ECU 🥲
71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE
is that good or bad that it is bosch.
mark
Mark Wilson
78 bay window, 82 bay Westy. T3 Caravelle GL 89 on the road.
Now in Victoria.
User friendliness of bosch ECUs is almost non existant.
I never had much luck getting diagnostic codes from them. 🤪
71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE
vlad01 wrote:I never had much luck getting diagnostic codes from them. 🤪
These ones don't have any.
I read it on samba, so it must be correct.
Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂
Exactly! what use is that?
71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE
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.
Futue te ipsum!!!
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
Mark Wilson
78 bay window, 82 bay Westy. T3 Caravelle GL 89 on the road.
Now in Victoria.
mjwcookie wrote: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?
Futue te ipsum!!!
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
Mark Wilson
78 bay window, 82 bay Westy. T3 Caravelle GL 89 on the road.
Now in Victoria.
