At times the engine will crank over , but will not start. on 2000 Ford Explorer

We have changed keys and had it on a computer no codes appear. The mechanic thinks it is the TPS . Anyone else have this problem?????

Asked by for the 2000 Ford Explorer
when it does not start ck fuel pressure and spark.if it were tps you should have a code but read it with a scanner to ck operation.
Thanks will try it. Have you heard anything about the factory alarm causing a similar issue?
its poss have the anti theft codes scanned. if the alarm is the problem it will shut off injector pulse as to not flood eng with gas
Thanks, is there a fix for it without taking it to a Ford dealership?
a good indenpendant shop in your area could do the job im sure
Thanks appreciate the help.
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