Fordzilla80
Ranger Lariat
Recently for the last few weeks i've had a big problem with my 03 Ranger. Whenever I start the truck up in the morning, it runs great. But as I drive, about 15-20 minutes into driving the truck will develop a jumpy idle at stops. It'll fluctuate between 500 and 1,000, and occasionally it dips below 500 and completely stalls out. When I go to accelerate, the truck will start going, then it just completely bogs down for a second or two, then it comes out of the bog and returns to normal. The warmer the truck gets the worse this gets until eventually it happens at every single stop. It just recently threw two codes, one for the IAC and one for the IAT. But I previously unplugged the IAC and MAF to test them out while the truck was running, so I think that's where those two codes came from.
Things i've checked:
-TPS
-IAC
-MAF
-Cleaned the Throttle Body and linkage
One thing I noticed is that I may have a vacuum leak somewhere around the intake, towards the back of the motor. It doesn't seem like the intake though, as it's not significant. It's just a constant sssssss that seems muffled, like it's under the intake. Is it possible that one of my injector seals is bad? If it helps any, the truck only has 48,000 miles on it. I greatly appreciate any suggestions.
Things i've checked:
-TPS
-IAC
-MAF
-Cleaned the Throttle Body and linkage
One thing I noticed is that I may have a vacuum leak somewhere around the intake, towards the back of the motor. It doesn't seem like the intake though, as it's not significant. It's just a constant sssssss that seems muffled, like it's under the intake. Is it possible that one of my injector seals is bad? If it helps any, the truck only has 48,000 miles on it. I greatly appreciate any suggestions.
Last edited: