2000 Ranger 3.0 issues
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Mountain Pass
Joined: Oct 2006
Posts: 237
Likes: 0
From: Niles, MI
2000 Ranger 3.0 issues
2000 3.0L Ranger having problems....
about 3 months ago I replaced the timing set and water pump and seals.. put it back together and everything worked great... until yesterday...
Driving home, came to a stop sign, and suddenly it had a MAJOR LOSS OF POWER... started running rough and could barely pull itself the last 1/2 mile home...
when it does start, it idles very rough and the settles down if you feather into the throttle. (in PARK-- not sure about under load)
I unplugged the TPS and it would start and idle a bit easier..... without having to give it any additional throttle...
REPLACED TPS and now it will not start at all... any ideas? was the TPS even a likely culprit afterall?
PLEASE HELP
and THANK YOU ALL IN ADVANCE
about 3 months ago I replaced the timing set and water pump and seals.. put it back together and everything worked great... until yesterday...
Driving home, came to a stop sign, and suddenly it had a MAJOR LOSS OF POWER... started running rough and could barely pull itself the last 1/2 mile home...
when it does start, it idles very rough and the settles down if you feather into the throttle. (in PARK-- not sure about under load)
I unplugged the TPS and it would start and idle a bit easier..... without having to give it any additional throttle...
REPLACED TPS and now it will not start at all... any ideas? was the TPS even a likely culprit afterall?
PLEASE HELP
and THANK YOU ALL IN ADVANCE
Post Fiend
Joined: Jan 2003
Posts: 9,748
Likes: 16
From: Connecticut
Did the CEL come on? I wonder if there are any pending codes.
Unless you get a code saying otherwise, then I doubt it's a TPS issue. I've never heard of them failing so suddenly.
Not a lot to go on, but If I had to make a preliminary guess, I'd go with some sort of fuel-delivery problem. A fuel pressure check would help with the diagnosis, in any case.
Unless you get a code saying otherwise, then I doubt it's a TPS issue. I've never heard of them failing so suddenly.
Not a lot to go on, but If I had to make a preliminary guess, I'd go with some sort of fuel-delivery problem. A fuel pressure check would help with the diagnosis, in any case.
Thread Starter
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Mountain Pass
Joined: Oct 2006
Posts: 237
Likes: 0
From: Niles, MI
I need to actually put a pressure gauge on it, but in a pinch last night, I just stuck a screwdriver in the schrader valve, and got a pretty good shot of pressurized fuel spray.... a friend's truck and it was late, so we checked it out real quick..... will do more thourough check this weekend.
Post Fiend
Joined: Jan 2003
Posts: 9,748
Likes: 16
From: Connecticut
That does seem to indicate fuel is present at the rail.
Regarding the fuel pressure test, keep in mind 1998+ Rangers utilize what is known as a "mechanical returnless" fuel system which has the following characteristics:
(1) there is no return line running back to the fuel tank from the fuel rail;
(2) designed to operate at higher fuel pressure- specs are 64psi at all times when pump is on (+/-8psi);
(3) the fuel pressure regulator is now in the fuel tank with the pump, not on the fuel rail.
Regarding the fuel pressure test, keep in mind 1998+ Rangers utilize what is known as a "mechanical returnless" fuel system which has the following characteristics:
(1) there is no return line running back to the fuel tank from the fuel rail;
(2) designed to operate at higher fuel pressure- specs are 64psi at all times when pump is on (+/-8psi);
(3) the fuel pressure regulator is now in the fuel tank with the pump, not on the fuel rail.
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