Big Lad On Tour

I've got a UK Turbo 2000, once it warms up on tickover it will misfire. Now then, I tried taking out the MAF sensor and this just caused the car to run even worse, (however this was when the engine was cold) So for it to be a fair test I'd probably be best doing it when warm.

What else could be causing this, I had it serviced less than 300 miles ago with new sparkers so wouldn't be that...

Please help lol!!

99greenwagon

iTrader: (39)

coil packs,leads,vacuum leek,turbo-intercooler leak?

scoobian

could be the lambda sensor too
I just replaced mine (again ...be careful of univeral types) and its idling much better again

99greenwagon

iTrader: (39)

or coolant temp sensor.

Big Lad On Tour

Cheers for the feedback fellas. I've been looking on some other posts and by the sounds of things the symptons are most similar to that of a vacuum leak.

Would I be best to just take the car to a garage with diagnostics and get it tested?

Or can you tell me how to test and see what the weak link is?

cheers

99greenwagon

iTrader: (39)

inspect all the vacumm pipes really carefully first,it could just be a pin hole.if u cant see any splits etc,then may be worth paying a visit to garage.have u done an ecu fault check?

Big Lad On Tour

No mate how would I do that, where are all the vacuum pipes located?

Thanks

99greenwagon

iTrader: (39)

ECU Reset and Error codes
Turn OFF the ignition

Connect Error code Connectors and Test Mode Connectors :
2 black connectors under dash, connect black to black and 2 green connectors under dash, connect green to green, they are by your left knee when sat in the drivers seat and often taped back to the loom if they haven't been used before.

Turn ON ignition but don't start the engine

Engine Check lamp comes on

Press accelerator pedal to the floor

Then return it to the half-throttle position and hold it there for two seconds

Release foot off the pedal completely

Start the engine

Check engine light error code is indicated by Pulsing lamp

If an error is detected then Check the ECU Code

If no error is detected - drive the car sensible for a couple of minutes
i.e. until warm (do not use boost or high rpm!)

When the ECU has been reset the Check Engine Light will flash

An Error Code is indicated by a flashing check engine light
of varying length of flash,
a flash of around once a second is the okay code and indicates all is well.

If an error code is detected Check the ECU Code

Turn ignition OFF and Disconnect Connectors

If there is a fault Check the Appropriate Sensor


Error Codes
An Error code is defined as a slow flash followed by fast flash
i.e 2 slow and 3 fast = 23 Mass Airflow sensor.
A continuous on/off at the same speed is no fault found.


Code Fault
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





do that before checking vacumm pipes.

Big Lad On Tour

Woah thats a good guide thanks fella I will give that a try tomo and see what the outcome is. Just to make sure I've fully understood you as described:-

"Start the engine

Check engine light error code is indicated by Pulsing lamp"

Where would the pulsing lamp be, would this be the check engine indicator?

Also

Error Codes
An Error code is defined as a slow flash followed by fast flash
i.e 2 slow and 3 fast = 23 Mass Airflow sensor.
A continuous on/off at the same speed is no fault found.


Code Fault
11 Crankshaft position sensor

For example if it was the crankshaft position sensor it would be indicated by 1 slow flash then 1 fast flash?

Thanks again

99greenwagon

iTrader: (39)

thats correct,just ensure u only connect the black connectors!

joz8968

iTrader: (13)

"Woah thats a good guide thanks fella I will give that a try tomo and see what the outcome is. Just to make sure I've fully understood you as described:-

"Start the engine

Check engine light error code is indicated by Pulsing lamp"

Where would the pulsing lamp be, would this be the check engine indicator?

Yes, the "CEL" (Check Engine Light) at base of instrument binnacle.

Also

Error Codes
An Error code is defined as a slow flash followed by fast flash
i.e 2 slow and 3 fast = 23 Mass Airflow sensor.
A continuous on/off at the same speed is no fault found.


Code Fault
11 Crankshaft position sensor

For example if it was the crankshaft position sensor it would be indicated by 1 slow flash then 1 fast flash?"

You got it.

Big Lad On Tour

Never ceases to amaze me at the wealth of knowledge of some of you guys on here, its like having an online Haynes manual ha!!

quattroowner

iTrader: (5)

Just found this guide, holy mother of thread revival but it's a easy to understand one for us dumber's!! will give this a try tonight and report back