"91" Explorer kicking my butt
Thread Starter
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Senior User
Joined: Oct 2001
Posts: 273
Likes: 0
From: New Mexico
"91" Explorer kicking my butt
Guys.. I need some help with my “91” Explorer, 5 spd XLT, 4x4. I am the original owner and it has 115k miles, still runs very strong but it has started to develop a problem that I can’t diagnose.
When the engine is warm and in the mid range of the acceleration it has developed a miss and then a surge of power. (Under heavy acceleration no issues) The check engine light will come on intermittently, however it does not come on exclusively when it is having this miss and surge problem. I have used a had-held low dollar code diagnostic tool but have not had productive results. Any help or thoughts would be appreciated. Thanks in advance, Jeff in NM…OUT
Some call it a six-pack, I call it a support group.
When the engine is warm and in the mid range of the acceleration it has developed a miss and then a surge of power. (Under heavy acceleration no issues) The check engine light will come on intermittently, however it does not come on exclusively when it is having this miss and surge problem. I have used a had-held low dollar code diagnostic tool but have not had productive results. Any help or thoughts would be appreciated. Thanks in advance, Jeff in NM…OUT
Some call it a six-pack, I call it a support group.
Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
"91" Explorer kicking my butt
Does it idle smoothly?
Those engines were quite prone to vacuum leaks in between the upper intake and the fuel rail and in between the fuel rail and lower intake.
I would also check the MAF sensor to make sure it is clean. If you do a search on here you'll find instructions for cleaning the MAF.
Those engines were quite prone to vacuum leaks in between the upper intake and the fuel rail and in between the fuel rail and lower intake.
I would also check the MAF sensor to make sure it is clean. If you do a search on here you'll find instructions for cleaning the MAF.
Thread Starter
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Senior User
Joined: Oct 2001
Posts: 273
Likes: 0
From: New Mexico
"91" Explorer kicking my butt
Guys, Thanks for the direction... and ... No, I have not checked the fuel pressure, I will give it a look...and...Yes, it idle's smooth...very smooth. Thx again, Jeff...OUT
Some call it a six pack, I call it a support group.
Some call it a six pack, I call it a support group.
