91 runner - rebuilt 3.0 10-13 mpg Can this be normal? this bad or? - Stock so far
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91 runner - rebuilt 3.0 10-13 mpg Can this be normal? this bad or? - Stock so far
1991 runner 4wd, auto 3.0 has just been rebuilt got over 1400 miles on it now, but MPG is still 10-13 The best is all highway. Is this normal, I would feel better with 16, my tahoe does better with much more power. Does Auto tranny have alot to do with this. have tried advancing timing, no change. Seems to run fine though in all situations. What gives, any help would be great. I think any mods I make will just make it worse. Thats no load condition
#4
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What all did they replace? What grade of fuel are you using? What promted you to rebuild it. I have a 91,4x4,auto,203K,and get around there also. I plan on replacing it but not sure if the Vortec by Chevy I want to replace it with will slip in or need major mods.
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join the club my man...3.0hh how sucky can the gas mileage be V6...if i fill up and get on the freeway...i can get about 280 miles before i better find a gas station....yeah the first 2 gen's are definately pigs:pig: ...ohh well gotta love em anyway right
#6
How many miles per tank
How many miles can you go on a tank of fuel? I make it around 140 miles on a full tank using Chevrom or Safeway brand mid or supreme. I bounce depending on what I used the fill up prior. Dont ask me why I just do.
#7
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My 3.0 is getting on average 17mpg. High is 21 low is 15 currently and I have a dead O2 sensor. Prior to that it was getting 24mpg high and 16 on the low end. If your milage is that bad, something is wrong. How hilly is it there? When did you last swap out your fuel filter and O2 sensor?
Steve
Steve
Last edited by Bumpin' Yota; 07-31-2003 at 07:49 PM.
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Originally posted by Bumpin' Yota
My 3.0 is getting on average 17mpg. High is 21 low is 15 currently and I have a dead O2 sensor. Prior to that it was getting 24mpg high and 16 on the low end. If your milage is that bad, something is wrong. How hilly is it there? When did you last swap out your fuel filter and O2 sensor?
Steve
My 3.0 is getting on average 17mpg. High is 21 low is 15 currently and I have a dead O2 sensor. Prior to that it was getting 24mpg high and 16 on the low end. If your milage is that bad, something is wrong. How hilly is it there? When did you last swap out your fuel filter and O2 sensor?
Steve
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Originally posted by L33T35T 4Runner
steve, i have no idea how you get that with the 3.slow. i have NEVER heard of anybody get anywhere near those numbers
steve, i have no idea how you get that with the 3.slow. i have NEVER heard of anybody get anywhere near those numbers
#11
One more important bit of info...
I kinda forgot to say I only get 140 miles to the tank due to 35" TXR tires. Rigs tend to work harder to turn that BIG of a tire I think. I changed my fuel filter and had a full tune not long ago. O2 sensor huh? Do they go bad often? I figured when that would go out my check eng. light would come on. Hmmmm!
#12
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Originally posted by L33T35T 4Runner
steve, i have no idea how you get that with the 3.slow. i have NEVER heard of anybody get anywhere near those numbers
steve, i have no idea how you get that with the 3.slow. i have NEVER heard of anybody get anywhere near those numbers
I can't really help it if other people aren't getting the same milage, perhaps my toy is the exception....
Then again mine will run ~100 on flat ground if the air temp is below 80F, most 2nd gens can't do that. I dunno why other than my mods, I just know based on this truck.
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My best is 21 on the highway with the windows down. I would say I probably average between 14 and 16 combined now. I try not to get over 3k rpms when I drive. I baby it.
Although I've never heard of 24 mpg before. Your truck must be a freak of nature.
Do a tune-up: plugs, wires, rotor, cap, fuel filter (if it has never been done), O2 sensor, and put a can of injector cleaner in there. Then see what you get. I've done all those things.
Although I've never heard of 24 mpg before. Your truck must be a freak of nature.
Do a tune-up: plugs, wires, rotor, cap, fuel filter (if it has never been done), O2 sensor, and put a can of injector cleaner in there. Then see what you get. I've done all those things.
#14
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Originally posted by AgRunner06
My best is 21 on the highway with the windows down. I would say I probably average between 14 and 16 combined now. I try not to get over 3k rpms when I drive. I baby it.
Although I've never heard of 24 mpg before. Your truck must be a freak of nature.
Do a tune-up: plugs, wires, rotor, cap, fuel filter (if it has never been done), O2 sensor, and put a can of injector cleaner in there. Then see what you get. I've done all those things.
My best is 21 on the highway with the windows down. I would say I probably average between 14 and 16 combined now. I try not to get over 3k rpms when I drive. I baby it.
Although I've never heard of 24 mpg before. Your truck must be a freak of nature.
Do a tune-up: plugs, wires, rotor, cap, fuel filter (if it has never been done), O2 sensor, and put a can of injector cleaner in there. Then see what you get. I've done all those things.
#17
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Re: 24mpg
Originally posted by cabbage
About the 24 mpg... and you were on a trail... did you get stuck a lot?? would spinning the tires cause a high mpg?
About the 24 mpg... and you were on a trail... did you get stuck a lot?? would spinning the tires cause a high mpg?
But for clarity, Ill go over it again was on I-75 in florida on a sarasota to gainesville commute, I don't remember any wind, I did not gun the engine one single time. 65mph the whole way, engine turning at ~2400rpm. 225/75r15s. A/C off. No system, nor any extra weight from one at that time. Me and about 20lbs of books and clothing.
If I go on the trail for any length of time, I get about 10mpg or less for that tank...
Now back to the topic. Swap out the O2 sensor, fuel filter, do the ISR mod, check the AFM vane, clean the throttle body, check plugs, plug wires, cap, and rotor, check the engine timing, possibly replace the cat with a free flow cat, and think about a 2.25" exhuast system and new muff. I have NO clue if headers would help or hurt.....
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Well -rebuild was due to worn out rod bearing when I bought. I did rebuild and put in all new rod,crank, pistons, etc.
New cap,rotor,same wires though. Thoroughly cleaned throttle body. Timing is advanced a little maybe 8-10 degrees.
I average 150-180 miles on a full tank.
I will change fuel filter, check O2, and AFM.
I did put a drop in K&N, all bilstiens & leveling spacer,but all else is virtually stock.
Sometimes idle drops to 500 at stop and auto tranny shifts hard on occassion - changed out those fluids 2.
runs pretty strong though - for what it is -Solid offroad
got gas
New cap,rotor,same wires though. Thoroughly cleaned throttle body. Timing is advanced a little maybe 8-10 degrees.
I average 150-180 miles on a full tank.
I will change fuel filter, check O2, and AFM.
I did put a drop in K&N, all bilstiens & leveling spacer,but all else is virtually stock.
Sometimes idle drops to 500 at stop and auto tranny shifts hard on occassion - changed out those fluids 2.
runs pretty strong though - for what it is -Solid offroad
got gas
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Originally posted by kaiberg
join the club my man...3.0hh how sucky can the gas mileage be V6...if i fill up and get on the freeway...i can get about 280 miles before i better find a gas station....yeah the first 2 gen's are definately pigs:pig: ...ohh well gotta love em anyway right
join the club my man...3.0hh how sucky can the gas mileage be V6...if i fill up and get on the freeway...i can get about 280 miles before i better find a gas station....yeah the first 2 gen's are definately pigs:pig: ...ohh well gotta love em anyway right