Ford Mondeo, 1999 mk1 / Car misfires when idle

Question

when the car is at stand still (ford mondeo 2.0l auto, 1999 mk1) when it revs to 5000rpm, it starts to misfire. would this be a limiter kicking in? the car has been at a higher rev count, going uphill , but didnt miss. also, the oil was really low, but no oil light comes on. would this have any effect?? any ideas?? Rich

Answer 1

Confusing question because you say it misfires when idle and at 5000rpm.

The limiter doesn't cause a misfire, it completely cuts off for a second or two - I know because I used to drive my Mondeo to death :-)

Missing is nearly always an electrical problem and could be the electronics (one of the black boxes) or a sensor, which only a garage can check.

You could try changing the plugs.

Never ever run a car on low oil, especially a Ford. It causes the engine to overheat and can cause damaging wear to the piston rings, cylinders etc.

The oil light is not a warning light. When you see the oil light it normally means that you have lost oil pressure and the engine is almost certainly irreperably damaged.

Answer 2

Reving the engine to 5k unloaded is not really a good idea. Normally what will happen is the fuel system will over fuel resulting in the miss fire.

Ja.

Answer 3

low oil can cause permantent damage, be careful

timing could be off

low fuel pressure, change the fuel filter, give the pump a whack(under passanger seats

Answer 4

No. Sounds like you a have a coil issue. Have a diagnostic ran to determine which cylinder is miss firing.

Answer 5

why are you concerned about it missing at 5000 revs standing still ,? does it miss when you are driving at that many revs ?5000 revs standing is a lot for a engine to accept,no the oil level being low will not have any affect on it but you should keep it full , if you want to keep revving your engine that high

good luck h