2000 explorer loses power

[Explorer_4x4_2000]

I have a 2000 explorer 4.0 sohc and when I'm accelerating I can keep the gas pedal at the same spot it will accelerate at first and then die down and to accelerate again i got to let out the gas and re apply the gas to get it up and going again
Does anyone have any idea to what could causethis

 

[Turdle]

Do you see a check engine light? If no, check to see if it comes on when you turn on the key

 

[Explorer_4x4_2000]

There is no check engine light on i scanned it and drove it multiple times but no light or codes

 

[Explorer_4x4_2000]

Do you see a check engine light? If no, check to see if it comes on when you turn on the key

There is no check engine light on i scanned it and drove it multiple times but no light or codes

 

[J_C]

First two thoughts are throttle position sensor or fuel pressure low. The latter can be checked with a loaner tool pressure gauge from Autozone/etc.

I assume you're not driving like a maniac
I mean if you're hitting the 5K (?) RPM rev limiter that could be described like that...

 

[Explorer_4x4_2000]

First two thoughts are throttle position sensor or fuel pressure low. The latter can be checked with a loaner tool pressure gauge from Autozone/etc.

I assume you're not driving like a maniac

I don't take it above 3 to 4 rims how do I check fuel pressure
I mean if you're hitting the 5K (?) RPM rev limiter that could be described like that...

 

[Explorer_4x4_2000]

I don't drive it over 3 to 4k rpm how do i check if the sensor is good

 

[Greg_DonWindsor]

I had a similar condition at one time, with poor cold starts as well. A new fuel pump resolved the issue.

 

[J_C]

I don't drive it over 3 to 4k rpm how do i check if the sensor is good

I would check the fuel pressure first, and someone else might be able to give you more specifics about a throttle sensor reading.

However based on the wiring diagram I'm looking at, it looks like a 3 wire sensor. The gray/red wire and brown/white are two ends of a potentiometer. The Gray/white wire is the wiper.

This means you should measure a steady resistance between the gray/red and brown/white wires, probably a few thousand KOhm. At one end of the throttle travel you should read near zero ohms between the gray/white wire and one of the other two wires. Near zero being relative to a scale of a few thousand KOHm. The OTHER, other wire should read near the same between it and the gray/white wire as the reading between those two other wires (gray/red and brown/white.

At the other end of the throttle travel the same should be true but in reverse, that which other wire reads near 0 ohms and which reads near full KOhms should reverse.

Once you have established this, pick the gray/white wire and whichever of the other two reads near 0 ohms at no throttle. Slowly rotate the throttle and watch the resistance reading climb. It should continue to climb slowly with no dropouts, no loss of a resistance reading.

One thing that makes me question all of the above is that I had a vague recollection that there was supposedly two potentiometers moved in parallel and that the ECM compared the values between the two to be sure that one wasn't readily wrongly, but I see no indication of that on my diagram. Then again, if I picked that info up off the internet or from a well meaning but misinformed person, it could be incorrect information.