Jump to content

Black Spark plugs and rich afr


Recommended Posts

Hi, my car is running really bad atm. 

It starts well. But idle is rich(Black plugs) and 10afr on brand new aem wideband   and cant accelerate smoothly. In one Word its undrivable.

My attention is on the map sensor.

I get 1.7v on idle with multimètre on pim line when its idling and 2.66v ignition on engine off 

Shouldnt it be around 0.2v when idling ?

Can someone confirm this please.

If so, mean map sensor needs to be replaced? 

Edited by nano
Link to post
Share on other sites
  • 1 year later...
1 hour ago, Sweg Collowjoekwn said:

I measured resistance over the wires, thought that was the same as measuring continuity!

Nope unfortunately not 

continuity just checks if a current is flowing.  From point a to b 

 

resistance check ya have to have say the injector harness disconnected and the ecu disconnected u then with selected on the ohms setting see what resistance is. 

To check the injector u have to test it disconnected should see a resistance depends on if the high or low injectors 

some will say 14.5 ohms then check the rest and see if there a difference. 
 

 

I rather do voltage drop test on the circuit 
 

 

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...