rick smith

Thanks thats what I needed to know. The long cranking means holding start for10 secs or longer. Before it would fire up at any temp almost immediately. I know it needs less fuel when warm, It seems like it's enriching at every start which makes me believe it,s getting a cold reading from ect. It starts much quicker when cold outside. I maybe wrong but I need to change antifreeze anyway, it's going to be messy. Thanks for the replies

That's just it I think there is like 3 ect one for guage one near radiator . only one controls fuel enrichment and I don't know which one . Thanks

Is the ect sensor at the bottom of the block on1987 4.0 the sensor that controls fuel enrichment for cold starts. WHEN THE WEATHER IS WARM THE ENGINE TURNS QUITE LONG BEFORE IT WILL START LIKE IT IS FLOODED. When IT IS COLD OUTSIDE IT STARTS MUCH QUICKER. Before I buy one would like to know ,part number would be nice! Thanks