The gt40 in my Supra is having an intermittent issue where as soon as it starts it will rev up to around 1500 rpm, then drop down to a few hundred rpm. It will cycle this pattern a couple of times and then it usually levels out and runs fine. It usually never happens on the first start of the day but only after it has been run for a little while and then shut off and allowed to sit for a few minutes. I have already replaced the low pressure fuel pump and both relays because I thought they were the problem but no luck. Any ideas?
|