Question about Cars & Trucks
Smart Car .8cdi Lambda sensors where are they positioned
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Posted on Jan 02, 2017
Some times the E.G.R. will stick half open. This will make the engine surge or have high idle. Try replaceing the E.G.R. located under the upper intake. Do not go with after market E.G.R. The spring in them are to powrefil and the E.G.R. wil not open. Also try replaceing the O2 sensors. This could give the engine more fuel thus a higher idle. Some vehicles the T.P.S. can be ajusted, do some checking to see if yours is adjustable.
Please contact me if your problem presists.
Posted on Feb 03, 2009
I cant tell you why but I do have a solution for you to try, I had a similar fault on a fiat punto last year, I disconnected the battery for an hour and then put it back and the car started, Im still puzzled by this but It may work for you, worth ago, make sure you have your radio code before removing the battery
Hope this helps
Posted on Feb 03, 2010
SOURCE: By winodj_d on Nov 23,
CODE PO420 - CATALYTIC EFFICIENCY BELOW NORMAL BANK I POSSIBLE CAUSES - BASE ENGINE PROBLEMS HIGH COOLANT OR ENGINE OIL CONSUMPTION- CATALYTIC CONVERTER DAMAGED OR HAS FAILED - AIR LEAKS IN AT THE EXHAUST MANIFOLD OR EXHAUST PIPES -YOU NEED A CODE SCANNER TO ERASE CODE.
Posted on Nov 25, 2010
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