stupid rough idle

[pete2528ca]

Ok, I have been struggling with this for some time and now need to ask the experts.

Upon starting the 97 disco, I get a wierd rough idle. It spikes up to 2K rpm, drops to almost a stall. Sometimes it is good at start up and it happens during the first three or four minutes of driving. Once warm or in gear it is ok.

Sometimes it starts fine and revs at 750, other times it spikes up and stays above 1500

I have cleaned the stepper motor, done the seafoam treatment, looked for vacuum leaks, the oil isn't poluted with coolant and the coolant isn't poluted with oil. I do have a small leak in the fuel filler tube before the fuel tank.

I have tinkered with the base idle, to no avail.

any other ideas?

new wires? new plugs?

help.

Pietro

 

[wolf]

have you recently changed the tps (throttle position sensor) or was it changed by previous owner without doing a proper voltage reset? This could also be a stepper deciding its ready to head way south for the winter (forever - LoL). Find out about that tps though as an unset tps will mimick what you have described.

 

[Mr jinnah]

well, the best thing is to make them think that your kid is superior to the other, weird kids that he/she has learned things from. And say that we don't have their culture.






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