Hi my name is cathy and I have a hec of a time with this truck I have replaced lifters, seals, gaskets...ect cause it was knocking about a month ago....before that it would run at like 2000 regular....we found out that it had a major leak in the top of the intake....fixed that well needless to say....we thought we had it but know it runs and drives better than it ever has, but it wont stay running!!!!! We replace fuel pump and filter of course because thats what we thought it was but no....helped but he the problem.....I have heard it could b the coil or thermostat but I dnt know what to check first....ne one had a prolem like this or know what I should check for sure......???

Please Help!