Running rough

[mk1Tom]

I have a 1.4 mk1 that doesnt idle right. Low and cuts out, fault code for maf sensor. I dont have a maf sensor. Any ideas that could help please?

[nta16]

Have you checked your air filter and housing are clean and clear, any air pipes/hoses cracked/loose/disconnected, condition of spark plugs, what's the service and maintenance history.

 

If you have a generic code reader the code might be a red herring.

 

Checked electric connections for battery supply and to sensors.

 

That's me out of quick ideas.

 

[TMB]

In particular, check the plastic brake servo pipe for splitting at the end connectors and non-return valve.

 

Example...

 

Edited 17 June, 2023 by TMB

[mk1Tom]

I have checked and fault code came up as maf sensor. I only have a map sensor so im going to try that, everything from pipes and wiring are all good. 

TMB where is this located? Thanks for your replys

[Breezy_Pete]

@TMB may have a photo as he has a very similar engine, but if you trace the black plastic pipe back from the brake servo (big black round thing on back wall of engine bay) you'll come across a one-way valve that will resemble the one pictured, to some extent.

Edited 17 June, 2023 by Breezy_Pete
Sp

[TMB]

Unfortunately I don't have a photo, but yeah, just follow it from the servo.

[mk1Tom]

No problem thank you guys. will deffo get that checked today.