1998 Volkswagen Transporter Van emission

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Condition	Value

expand_moreDiesel exhaust gas values

expand_moreCut-off control speed


2.5 TDI Syncro with diesel straight-5 2.5 L 101 HP engine (1996.1–2003.4)	5050–5150 rpm5050–5150 rpm5050–5150 rpm
2.5 TDI Syncro with diesel straight-5 2.5 L 101 HP engine (1996.1–2003.4)	5050–5150 rpm5050–5150 rpm5050–5150 rpm

expand_more2.5 TDI with diesel straight-5 2.5 L 101 HP engine (1995.9–2003.4)


All Volkswagen diesel straight-5 2.5 Liters ACV engines	4300–4700 rpm4300–4700 rpm4300–4700 rpm
All Volkswagen diesel straight-5 2.5 Liters AUF engines	4500–4900 rpm4500–4900 rpm4500–4900 rpm
All Volkswagen diesel straight-5 2.5 Liters AYC engines	4500–4900 rpm4500–4900 rpm4500–4900 rpm

expand_more2.5 TDI with diesel straight-5 2.5 L 149 HP at 4000 RPM, 295 N⋅m at 1900 RPM engine (1998.5–2003.4)


All Volkswagen diesel straight-5 2.5 Liters AHY engines	4850–5050 rpm4850–5050 rpm4850–5050 rpm
All Volkswagen diesel straight-5 2.5 Liters AXG engines	4800–5000 rpm4800–5000 rpm4800–5000 rpm


2.5 TDI with diesel straight-5 2.5 L 87 HP engine (1998.5–2003.4)	4500–4700 rpm4500–4700 rpm4500–4700 rpm
2.5 TDI with diesel straight-5 2.5 L 87 HP engine (1998.5–2003.4)	4500–4700 rpm4500–4700 rpm4500–4700 rpm
All other modifications	4700–4900 rpm4700–4900 rpm4700–4900 rpm


Diesel conditioning gas injections	10
From 60° C engine oil temperature

expand_moreDiesel conditioning speed


All Volkswagen diesel straight-5 2.5 Liters ACV engines	4300–4700 rpm4300–4700 rpm4300–4700 rpm
From 60° C engine oil temperature
All Volkswagen diesel straight-5 2.5 Liters AUF engines	4500–4900 rpm4500–4900 rpm4500–4900 rpm
From 60° C engine oil temperature
All Volkswagen diesel straight-5 2.5 Liters AYC engines	4500–4900 rpm4500–4900 rpm4500–4900 rpm
From 60° C engine oil temperature
All Volkswagen diesel straight-5 2.5 Liters AHY engines	4850–5050 rpm4850–5050 rpm4850–5050 rpm
From 60° C engine oil temperature
All Volkswagen diesel straight-5 2.5 Liters AXG engines	4800–5000 rpm4800–5000 rpm4800–5000 rpm
From 60° C engine oil temperature
All other modifications	4700–4900 rpm4700–4900 rpm4700–4900 rpm
From 60° C engine oil temperature


Maximum K-value	2 1/m2 1/m2 1/m

expand_moreMeasuring mode


2.5 TDI with diesel straight-5 2.5 L 101 HP engine (1995.9–2003.4)	B
2.5 TDI with diesel straight-5 2.5 L 101 HP engine (1995.9–2003.4)	B
2.5 TDI with diesel straight-5 2.5 L 101 HP engine (1995.9–2003.4)	B
2.5 TDI with diesel straight-5 2.5 L 149 HP at 4000 RPM, 295 N⋅m at 1900 RPM engine (1998.5–2003.4)	B
2.5 TDI with diesel straight-5 2.5 L 149 HP engine (1998.5–2003.4)	B
All other modifications	A


Measuring sensor	1
Measuring time	0.5 s0.5 s0.5 s
Stoppage time	1 s1 s1 s

expand_moreGeneral exhaust gas values

expand_moreExhaust gas recirculation (EGR)


All other modifications	Yes

expand_moreIdling speed with automatic gearbox


2.0 with gasoline straight-4 2.0 L 83 HP engine (1990.9–2003.4)	775–825 rpm775–825 rpm775–825 rpm

expand_more2.5 TDI with diesel straight-5 2.5 L 101 HP engine (1995.9–2003.4)


All Volkswagen diesel straight-5 2.5 Liters ACV engines	740–830 rpm740–830 rpm740–830 rpm
All Volkswagen diesel straight-5 2.5 Liters AUF engines	755–830 rpm755–830 rpm755–830 rpm
All Volkswagen diesel straight-5 2.5 Liters AYC engines	755–880 rpm755–880 rpm755–880 rpm


All other modifications	800–900 rpm800–900 rpm800–900 rpm

expand_moreIdling speed with manual gearbox


1.9 TD with diesel straight-4 1.9 L 67 HP engine (1992.10–2003.4)	820–880 rpm820–880 rpm820–880 rpm
2.4 D Syncro with diesel straight-5 2.4 L 76 HP engine (1992.10–1998.9)	800–900 rpm800–900 rpm800–900 rpm
2.4 D with diesel straight-5 2.4 L 74 HP engine (1997.8–2003.4)	800–900 rpm800–900 rpm800–900 rpm
2.4 D with diesel straight-5 2.4 L 76 HP engine (1990.9–1998.4)	800–900 rpm800–900 rpm800–900 rpm

expand_more2.5 Syncro with gasoline straight-5 2.5 L 114 HP engine (1996.7–2003.4)


All Volkswagen gasoline straight-5 2.5 Liters APL engines	600–800 rpm600–800 rpm600–800 rpm
Otherwise	650–750 rpm650–750 rpm650–750 rpm


2.5 TDI Syncro with diesel straight-5 2.5 L 101 HP engine (1996.1–2003.4)	740–820 rpm740–820 rpm740–820 rpm
No adjustment possible
2.5 TDI Syncro with diesel straight-5 2.5 L 101 HP engine (1996.1–2003.4)	740–820 rpm740–820 rpm740–820 rpm
No adjustment possible

expand_more2.5 TDI with diesel straight-5 2.5 L 101 HP engine (1995.9–2003.4)


All Volkswagen diesel straight-5 2.5 Liters ACV engines	740–830 rpm740–830 rpm740–830 rpm
All Volkswagen diesel straight-5 2.5 Liters AUF engines	755–830 rpm755–830 rpm755–830 rpm
All Volkswagen diesel straight-5 2.5 Liters AYC engines	755–880 rpm755–880 rpm755–880 rpm


2.5 TDI with diesel straight-5 2.5 L 149 HP at 4000 RPM, 295 N⋅m at 1900 RPM engine (1998.5–2003.4)	755–880 rpm755–880 rpm755–880 rpm
2.5 TDI with diesel straight-5 2.5 L 149 HP engine (1998.5–2003.4)	755–880 rpm755–880 rpm755–880 rpm
2.5 TDI with diesel straight-5 2.5 L 87 HP engine (1998.5–2003.4)	755–830 rpm755–830 rpm755–830 rpm
2.5 TDI with diesel straight-5 2.5 L 87 HP engine (1998.5–2003.4)	755–830 rpm755–830 rpm755–830 rpm
2.8 VR 6 with gasoline vr-6 2.8 L 138 HP engine (1995.11–2000.4)	650–750 rpm650–750 rpm650–750 rpm
All other modifications	775–825 rpm775–825 rpm775–825 rpm
No adjustment possible


Minimum engine oil temperature at VET	176°F176°F80°C

expand_morePetrol exhaust gas values

expand_moreCO content at idling speed

expand_more2.0 with gasoline straight-4 2.0 L 83 HP engine (1990.9–2003.4)


With regulated catalytic converter	0–0.5 %0–0.5 %0–0.5 %
Without catalytic converter	0.5–1.5 %0.5–1.5 %0.5–1.5 %


2.8 VR 6 with gasoline vr-6 2.8 L 138 HP engine (1995.11–2000.4)	0.5 %0.5 %0.5 %
All other modifications	0–0.5 %0–0.5 %0–0.5 %

expand_moreCO content at increased idling speed


2.8 VR 6 with gasoline vr-6 2.8 L 138 HP engine (1995.11–2000.4)	0.3 %0.3 %0.3 %
All other modifications	0–0.3 %0–0.3 %0–0.3 %

expand_moreDelta lambda


All Volkswagen gasoline straight-4 2.0 Liters AAC engines	0.02 λ0.02 λ0.02 λ
All other modifications	0.03 λ0.03 λ0.03 λ

expand_moreIgnition time


2.8 VR 6 with gasoline vr-6 2.8 L 138 HP engine (1995.11–2000.4)	-6°00' - before TDC + after TDC
All other modifications	-6°00'±1°00' - before TDC + after TDC
With engine speed 1500 - 1800/min


Increased idling speed	2500–2800 rpm2500–2800 rpm2500–2800 rpm
Lambda value	0.97–1.03 λ0.97–1.03 λ0.97–1.03 λ

expand_moreMaximum HC content at idling


2.0 with gasoline straight-4 2.0 L 83 HP engine (1990.9–2003.4)	100 ppm100 ppm100 ppm
All other modifications	200 ppm200 ppm200 ppm

expand_morePetrol conditioning speed


All other modifications	2500–2800 rpm2500–2800 rpm2500–2800 rpm


Petrol conditioning time	120 s120 s120 s

expand_moreSpeed for disturbance variable


All Volkswagen gasoline straight-5 2.5 Liters AET engines	550–850 rpm550–850 rpm550–850 rpm
All Volkswagen gasoline straight-5 2.5 Liters APL engines	550–850 rpm550–850 rpm550–850 rpm
All Volkswagen gasoline straight-5 2.5 Liters AVT engines	550–850 rpm550–850 rpm550–850 rpm
All other modifications	675–925 rpm675–925 rpm675–925 rpm

expand_moreVacuum hose of centrifugal force adjustment connected/disconnected

To reduce environment impact and pass government inspections keep emission parameters at the level prescribed by Volkswagen.

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1998 Volkswagen Transporter Van user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Volkswagen warranty policy for your region. In some regions DIY service may invalidate your warranty.

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Volkswagen Transporter Van service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 1998 Volkswagen Transporter Van you're not only saving money, but also also improving your technical skills and learning something new.

1998 Volkswagen Transporter Van generations

In 1998 Volkswagen offered 2 generations of the Transporter Van. Emission may vary in different generations. Be sure that you are looking at the rigt modification.

T3

1998 Volkswagen Transporter Van T4 GP (T4 facelift) Emission

Table of Contents

Conquer your fears and never give up!

1998 Volkswagen Transporter Van generations

T3

Volkswagen Transporter Van T4 GP (T4 facelift) model years

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