nano Posted August 5, 2018 Share Posted August 5, 2018 (edited) 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 August 5, 2018 by nano Quote Link to post Share on other sites
nano Posted August 5, 2018 Author Share Posted August 5, 2018 Ok sorted. Injectors harness is not good. I used my 2ee one and injectors are all together and in a 4efte they re seperate Quote Link to post Share on other sites
Sweg Collowjoekwn Posted September 16, 2019 Share Posted September 16, 2019 Did it have a lot of trouble getting past 4k rpm aswell? Mine is having about the same problem, misfiring and running super rich. Quote Link to post Share on other sites
GP82 Posted September 17, 2019 Share Posted September 17, 2019 Got any fault codes? Quote Link to post Share on other sites
Sweg Collowjoekwn Posted September 17, 2019 Share Posted September 17, 2019 Only 24, but nothing else. Quote Link to post Share on other sites
RobSR Posted September 17, 2019 Share Posted September 17, 2019 24 is air intake temp sensor signal fault. Intake temp is very important in a speed density based engine so that will be causing you problems first of all. Quote Link to post Share on other sites
Sweg Collowjoekwn Posted September 20, 2019 Share Posted September 20, 2019 Would it cause the engine to run stupid rich? So misfiring because there just is too much fuel? If so I'll get that sorted asap. Quote Link to post Share on other sites
RobSR Posted September 20, 2019 Share Posted September 20, 2019 I don’t know what the stock ecu is set at when the sensor fails, usually it’ll fail hot so the ecu will inject fuel for safety. Check the wiring etc too. Could be a break in the loom etc. Quote Link to post Share on other sites
Sweg Collowjoekwn Posted September 23, 2019 Share Posted September 23, 2019 Connected the IAT, made no difference. However measured continuity over the separate injector wires, they all made continuity. Which does mean all the injectors are connected. Thank you very much for helping though, have checked all the other wires if they actually did something or gave the right values. Quote Link to post Share on other sites
Sweg Collowjoekwn Posted September 27, 2019 Share Posted September 27, 2019 Turns out it was indeed the injector wiring, runs fine now! Quote Link to post Share on other sites
jellybaby Posted September 27, 2019 Share Posted September 27, 2019 Least u found the issue tip in future u can have continuity through a single strand of wire it always best to do a resistance check or a volt drop test Quote Link to post Share on other sites
Sweg Collowjoekwn Posted September 29, 2019 Share Posted September 29, 2019 I measured resistance over the wires, thought that was the same as measuring continuity! Quote Link to post Share on other sites
jellybaby Posted September 29, 2019 Share Posted September 29, 2019 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 Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.