Hi Guys
I'm new to this petrol engine stuff so bear with me (I'm more used to old fashioned diesels)
Car is a Vaux Combo Van 1.6 PETROL/LPG. Recently i had the rear section of the exhaust replaced, then as per normal a month later the front section developed a small blow near the flexi and given that much KERCHING was required (odd ball engine/vehicle combination) it had to wait for a couple of weeks.
During this period the engine warning light decided to come on i suspected due to the exhaust flow disruption, a couple of days after i made a temporary repair with exhaust paste the light went out.
Now, a few days after i have had the section replaced the light has come back on (as i changed gear and the revs fell) i have had the codes read, and the two current faults logged were o2 Sensor and EGR.
Before i dash out and replace one, or the other is it likely that the systems are just re-learning the proper settings and will sort themselves out.
Is one or the other a more likely culprit?
Whilst i can find the o2 sensor sticking out of the exhaust I'm a little more befuddled by the location of the EGR, on previous cars this has been a noticeable branch from the exhaust to the inlet manifold, but on this i see no sign? - That said haven't had change to look properly in daylight.
Are there any Gotchas with the sensors? I seem to recall the OEM / Branded units are recommended as the cheap ones can be s**te, is this true?
Whilst being a tight arse I'd rather pay twice as much and it last three times as long!
Finally, I sometimes notice that the van hesitates before accelerating and sometimes feels like it is ever so gently surging periodically when tickling along at 40mph could this be related?
All thoughts welcome
Bloody petrol's....
TIA
Tom
Incidentally, the annoying rattle i was struggling to find a few weeks ago turned out to be a loose pinch bolt at the base of the steering column.