Microcar MC1 800cc 2005 - Starts ok from cold, idles to fast - Fixed #
Posted by Paul Manning on May 30, 2010, 7:15 pm
Year of Manufacture *: 2005 Engine Size and Code *: 800CC ( Optional ) ECU Type: Lombardini ( Optional ) Scanner Used: OBD ( Optional) Fault Codes: None
Anybody out there come across one of these little darlings. Engine starts from cold fine, appears to run ok, idles ok but idles too fast which will not allow a forward or reverse gear to be selected. Obd scanner says no faults, would like to see live data but dont have any ideas what software to use. After the engine has been allowed to warm up switching off then trying to restart on seems to result in overfueling and flooding. Doesnt appear to be any airleaks either. Completly in the dark with regard to technical information, odd little beast all thoughts would be welcomed.
Re: Microcar MC1
Posted by Christy Doyle on May 31, 2010, 9:16 am, in reply to "Microcar MC1" Christy Doyle
Paul, Can you monitor temperature sensor to see whats going on while engine is warming up.Regards,Christy.
Re: Microcar MC1
Posted by Shaun Dale on June 2, 2010, 7:45 pm, in reply to "Re: Microcar MC1" Shaun Dale
Hi Paul, If you are in with OBD can you get live data that way? Failing that, what about back to basics, find out where the extra air is coming from, ISCV or air leak? I take it access is bl**dy awful? Just thinking you need to find out if the fast idle is commanded by the PCM or is unintended. Shaun
Re: Microcar MC1
Posted by Paul Manning on June 4, 2010, 10:30 pm, in reply to "Re: Microcar MC1" Paul Manning
Thanks for your interest, as yet have not managed to get back to the "car" to get deeper into the diagnosis, cant say i am looking forward to it as it is in a housing estate car park, kneeling down to code read it the other day i looked like i was performing some sort of religous meditation, didnt dare lean too hard on anything for fear of it snapping and as has already been suggested access to components is somewhat strained, spending this weekend training a troupe of earwigs to carry the spanners, planning to go back on monday so will post a fix, but only after ive taught the insects to speak english so the can tell me what they did to fix it.
Re: Microcar MC1
Posted by Shaun Dale on June 4, 2010, 11:21 pm, in reply to "Re: Microcar MC1" Shaun Dale
Hi Paul, I take it you work mobile? I knocked it on the head some time ago, get the car away from the customer, you can treat the job as a schoolday if you wish and then make a value judgement on whether you charge all the hours or not, with a car that is not mainstream that is the only way in my opinion. Good luck Shaun.
Fixed #
Posted by Paul Manning on June 18, 2010, 10:23 pm, in reply to "Re: Microcar MC1" Message modified by board administrator June 22, 2010, 2:53 pm
Took me a week longer than expected to return to the scene of the crime, but finally found a morning and went back determined to fix it. Took the front "bumper" off to reveal the engine in all its twin cylinder glory, located the coolant temp sensor, located under the thermostat housing, attached a scope and watched the voltage as the engine warmed up, nothing happened that pointed to the fault, until the man using the pnumatic drill across the street finally stopped and i could hear the exhaust blow, only very slightly, further investigation revealed that the flange on the exhaust that holds the o2 sensor had not been welded correctly, also knocking the rust off the flexible front section of the exhaust revealed more blowing. Sharp work with an exhaust bandage and gun gum changed the way the car ran completly. obviously the tiny bore of the exhaust and the way the twin cylinder engine runs was dragging excess o2 in and fooling the injection system, put back together and road tested (with a bag on my head) drives perfectly and happy customer, alls well that ends well.
on May 31, 2010, 9:16 am, in reply to "