Can anone ofer an help with this prolem - my Felicia 1.3 MPi (97 R reg) has developed what is best described as a 'cough' in as much the engine suffers from a jolt - appears to be the fuel pump switching on/off/on again all in a second or two. When the engine missfires a relay can be heard clicking in the fusebox - I guess it's the fuel pump relay.

I've chaned the coilpack as I thought I was HT problem - same as before

Also the temp sender (mounted in the thermostat) has been changed a this did not read well on an ohmeter test.

have checked all the engine management connecors/plugs which all appear ok and cleaned off the hall sensor that checks he flywheel rotation.

For the record the car starts on the button first time every time no problem at all.

I'm a qualified industrial electrical engineer so this ones a headscratcher for me!!!

Any help/experience of this before very welcome !!

Baz

When does it happen?

happens after about 2 miles driving then can happen at almost anytime but more frequently under acceleration.

Baz

forgot to add the cars now done 80,000 miles and the timing chain is original but not noisy.

Baz

My local garage belive they have found the fault - the hall sensor (located on the gearbox housing) which senses engine rotation. Either the wiring or the sensor is playing up, they are changing the sensor in 2 days when a new one arrives - will update once I know more.