Im running a c20let engine in my RWD Gartrac, the issue i have and ive searched the forums is, the engine will idle all day long but when its at normal op temp and you drive it, every time you come to stop the engine will stall and is very difficult to restart, if it does restart it will want to cut out again. so if you give it a little pedal its starts chugging and burning fuel. there are no fault codes present. ive check all the wiring, and sensors, CTS, TPS, MAF, is as though when something gets warm ill will do this, could it be plug lead, dizzy, coil, i dont know could someone please help. when its cold its crazy, boosts like mad,

 

possibly crank sensor

 

Lambda sensors?

 

its new m8 would that cause this problem surely it would a fault code

 

changed it, put new one on, its very strange as when the temp gets to 60-70 degrees is does it, then when cold it is ok again

 

Well totally unrelated but on mine there were no fault codes but mine would start and hunt about badly and chug when revving because lambdas were slow to respond but wouldn't flag a code. What you could do before you go changing things is hook it up to something that runs live streaming data so you can see if sensors are responding like they should, within range, and at the right times.

 

You know anyone who do that, not many specialist near me, well none at all that i know of

 

what managment system is it running mate?

 

Not sure mate, wouldn't take it just to any garage but most garages should have the ability to read live data with a scanner of some sort. Mate of mine who works on my car uses Snap-On gear.

 

Its running vmax phase 3 with power wheel genuine (motronic ecu), had another ecu on it and that did the same, needs a specialist i think as im an electrician by trade and ive belled all the possible sensors out, running out of ideas

 

Has it actually been mapped for the engine ?
tabetha

 

No, would this need to get mapped for the engine then, would that have an affect on the issues when engine is warm?