petkov117
New Member
- Joined
- September 3, 2025
- Messages
- 1
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- City, State
- Smolyan
- Year, Model & Trim Level
- 2000 Explorer 4.0 Limited
Hello everyone,
Last year I got my brother’s Ford Explorer 4.0 SOHC 204hp 4WD (2000 model). I renovated it, and it already had an LPG system installed. At first everything felt normal, just some occasional misfires.
I took it to the LPG installer to retune the system. After the retune the misfires disappeared, and the car felt good at first. However, when driving uphill, I noticed a big issue: the car has no power, won’t kick down, and accelerates very slowly.
Here’s what I’ve checked/done so far:
So far, I’m stuck. Any ideas where I should look next? Could it be transmission-related, fuel delivery, or something else?
Thanks in advance for any help!
Last year I got my brother’s Ford Explorer 4.0 SOHC 204hp 4WD (2000 model). I renovated it, and it already had an LPG system installed. At first everything felt normal, just some occasional misfires.
I took it to the LPG installer to retune the system. After the retune the misfires disappeared, and the car felt good at first. However, when driving uphill, I noticed a big issue: the car has no power, won’t kick down, and accelerates very slowly.
Here’s what I’ve checked/done so far:
- MAF sensor cleaned and checked → diagnostics show it’s working fine.
- LPG installer tried retuning again, but no matter what he did the car’s behavior didn’t change. He says it’s not the LPG system.
- On petrol it’s not better: the fuel pump needs replacement, and under full throttle the RPMs actually drop. If I press the throttle ~80%, it will accelerate slowly.
- Throttle position sensor → diagnostics show it’s working fine.
So far, I’m stuck. Any ideas where I should look next? Could it be transmission-related, fuel delivery, or something else?
Thanks in advance for any help!
