1991 4.0 engine life?
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New User
Joined: May 2003
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1991 4.0 engine life?
hello, I found a good deal on a explorer, it has a 4.0 v-6 its a 1991. the engine has 160,000 miles on it. is this too high of miles and should I keep looking. I know nothing about these engines, this has snappy power and sounds strong. any advice out there and how many miles do you have????? please help thanx!!!
also this is 4x4 and strait,
also this is 4x4 and strait,
Senior User
Joined: Feb 2003
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From: anchorage alaska
1991 4.0 engine life?
these moter's are VERY relieable they run FOREVER there's many with 200k+ miles on them and 160 k miles is not that much for a 91 theise moter's are very strong id say go for it
i have a 94 xlt 4x4 with 81k run's smooth
i have a 94 xlt 4x4 with 81k run's smooth
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From: Des Moines
1991 4.0 engine life?
Talked to my father-in-law last night and he said he had over 200,000 on his last Explorer (I think it was a 93) and was still purring. Had to rebuild the tranny, but after that long, who doesn't?
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Joined: Jan 2003
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From: Iowa
1991 4.0 engine life?
Originally posted by dennyge
Talked to my father-in-law last night and he said he had over 200,000 on his last Explorer (I think it was a 93) and was still purring. Had to rebuild the tranny, but after that long, who doesn't?
Talked to my father-in-law last night and he said he had over 200,000 on his last Explorer (I think it was a 93) and was still purring. Had to rebuild the tranny, but after that long, who doesn't?
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Joined: Apr 2003
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From: Des Moines
1991 4.0 engine life?
I can only hope that I am as lucky. Would sure like to get another couple of years out of her. She treats me well on those long bird hunting trips. 
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From: Purmerend / The Netherlands
1991 4.0 engine life?
Try to find out how the car has been used, were there many previous owners in a short time, is the engine tuned to the limit or plain standard?
Have the engine checked by a pro for exessive wear, if it sounds fine than go for it.
Greetz, Tony
Have the engine checked by a pro for exessive wear, if it sounds fine than go for it.
Greetz, Tony
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Senior User
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1991 4.0 engine life?
I had a '91 Sport and drove it until about 230K miles.
The motor was still running great (actually drove it 600+ miles to the dealer at which I traded it in 2 states away).
However, it was getting to the point that it needed rings or something (I think coolant was beginning to leak into the engine).
However that only started at around 210K. At any rate...the motor always ran great and rarely failed to start instantly.
The motor was still running great (actually drove it 600+ miles to the dealer at which I traded it in 2 states away).
However, it was getting to the point that it needed rings or something (I think coolant was beginning to leak into the engine).
However that only started at around 210K. At any rate...the motor always ran great and rarely failed to start instantly.
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1991 4.0 engine life?
I have a 92' with 120,000. The engine is great. I have a friend who put over 200,000. The only problem with the old Explorers is the rust. They all have a tendency to rust out along the rear lower side paneling. I replaced the dog legs once already.
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From: Thomson, GA
1991 4.0 engine life?
My moms 92 EB 4x4 has 230 thousand, and my uncle's 91 XLT 4x4 has 400+ thousand. The only problems he has had were recently the A/C comp. locked up, and while he had it apart, he decided to change the whining power steeering pump that we all knowand love. The engine runs just fine. It had originally been used for a golf course for something, so he got it for cheap when 100k rolled around. I havent ever seen a Blazer make it that far 
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Joined: Feb 2003
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From: Eastern WA
1991 4.0 engine life?
My 94 Ranger 4.0L has 155,600 one owner miles and runs perfect. Oil has been changed every 3000-3500 miles. I'd drive it anywhere today. A buddy of mine had a 92 Explorer 4.0L and it was traded at 186,000 miles; it was running great but he wanted a newer Explorer was all. There is a post in the Ranger forum titles "miles on your Ranger"; you may want to look at it for more feedback on the 4.0L.
Some people have said that the intake gasket has had problems. Symptoms are vac and coolant leaks. Myself, I'd just put a new one on while the motor was out and access was easy.
Some people have said that the intake gasket has had problems. Symptoms are vac and coolant leaks. Myself, I'd just put a new one on while the motor was out and access was easy.
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