Hi, I have just completed 520 mile round trip over a few days. The car has been fine coasting down the motorway at a steady 75 - 80. I pulled up at the services for a few minutes and then got on my way again. As I rejoined the motorway and started to speed up the car was hesitant as though it was missing or fuel starvation for a few seconds then it cleared and ran fine. Later on the engine check light cam on but with no differance in performance to the car. I gradually slowed down to about 50 and carried on for a mile or two, the engine check light went out and I resumed my journey traveling again at 75 - 80.
This hapenned several times on both directions on my journey. I have done quite a few miles locally with no problems. Any ideas......
My car is a '99 UK 2000 turbo wagon.

 

Use this method to check for error codes.
http://www.scoobypedia.co.uk/index.p...eadingECUCodes

 

Fault codes are below for you

On that year of car it is most likely to be code 23 MAF. As they are weak
If it is the MAF - They did three versions of MY99/00 MAF
You want to look for this manufacturer part number C36-700 R92 in white down the side. Which denotes it is the third and final version and better than the first two.


11 Crankshaft position sensor

12 Starter switch

13 Camshaft position sensor

21 Engine coolant temperature sensor

22 Knock sensor

23 Mass air flow sensor

24 Idle air control solenoid

31 Throttle position sensor

32 Oxygen sensor

33 Vehicle speed sensor 2

35 Purge control solenoid valve

42 Idle switch

44 Wastegate control solenoid valve

45 Pressure sensor / Pressure exchange solenoid valve

51 Neutral position switch

 

All you guys are so helpful. Ive got a similar fault with my 04 sti. So going to check the codes out. Po134 o2 sensor and po519

 

I have a classic and I used to get this happening to me regularly. It hasn't happened in ages now and I have been replacing the MAF every couple of years (the car doesn't do many miles a year) so the MAF could well be the issue. I buy mine from ICP.