88 1500 series with AWFUL FUEL MILAGE

chevy_202 · 01-17-2006, 01:39 AM

Hi Guys I Am New Here And I Have A 1988 Chevy 1500 Series 4x4 And I Have Awful Fuel Milage I Can Watch The Fuel Gauge Drop While Driving......i Tuned It Up And Every Thing, It Is Just Terrible Please Let Me Know If Ne One Has Any Ideas .....thanks So Much.....chevy All The Way.....

Beaver3000 · 01-17-2006, 08:13 PM

What kind of gas milage are we talking about? Below 10 mpg? Have you cleaned the air filter? Have you been towing anything or been running your engine hard, wheelin' or anything? My fuel guage moves around, but very slowly and almost hard to tell. How dramatically does yours move? Chevyguy will be able to help you out on this one.

chevy_202 · 01-19-2006, 01:25 AM

hi, thanks for the reply im getting below 10 miles per gallon, i don't have a air filter i just drive to and from work,i get like 50 miles to 20 dollars, at 2.39 per gallon any help would be greatley appreciated

gmtech · 01-19-2006, 07:31 AM

What do you mean you don't have an air filter???? Did you remove it and leave it out??

02F2504x4 · 01-19-2006, 10:06 AM

You might need to put that air filter back on thats one of your problems. Now what kind of engine do you have and what gears do you have in the truck. Plus you might want to buy some kind of fuel conditioner. I use fuel conditioner in my truck and i slowly get better gas milage every tank. You need to let us know better spects of your truck to better answer your question.

chevyguy · 01-19-2006, 02:02 PM

Sorry , but i dont believe in mechanic in a can remedies. It might help in prevention, but thet problem already exists. i would start by asking about gears, oversized tires, driving habits etc.

chevy_202 · 01-20-2006, 02:00 AM

ok guys,thanks for the help....the truckj is a 1988 chevy 1500 series 4x4, 350ci engine. awful fuel milage,i took the air filter out,i have 34 inch bogger tires on this truck, but the problem was there before i added the tires.im not sure about the gering,it has a 700r4 trans w/overdrive, i do know the gering is stock.....hope this helps some for u chevy guys to help me out......thanks...........

Truck_Man · 01-20-2006, 10:27 AM

You deffinately need to put the air filter back on, you never run any engine without an air filter, It will end up ruining your engine without one on it. You will be sucking in all kinds of dust and dirt that will wear your engine out. Bad idea to not use an air filter.

With that year of truck, with a 350 and the size tires you have on it, I would'nt doubt it abit if you are getting gas milage under 10 mpg.

My dad had a chevy truck with a 350 in it, of course it was a 79 and carburated, but i know he was getting 5 or 6 mile per gallon city, I dont know what highway was but thats all he could get out of it. The little newer model you have with fuel injection should increase the milage some but with bigger tires and if you are running it hard forget it, your gas milage in that case is probably about right.

396chevy · 01-20-2006, 04:23 PM

hi well for one Truck_man is right about the aircleaner but you should be getting at least 12mpg i get 13/14 and i drive tough, fast and hard daily anyway i would recomend getting a power programer because they can troubleshoot too check you fuel/air mixture and timeing my 89 chevy has 265/75/16s and 342 gears with a 350ci bored 40 over i also run a k&n tornado and tbi spacer 8.5mm wires platinum +4 plugs and a high flow oil pump. well thats just my opinion.

chevy_202 · 01-21-2006, 12:20 AM

Thanks Guys But I Was Having This Problem Before I Put The Big Tires On It,and The Engine Light Comes On And Off At Times.

01-17-2006, 01:39 AM	#1
chevy_202 Full Member Join Date: Jan 2006 Posts: 15	88 1500 series with AWFUL FUEL MILAGE Hi Guys I Am New Here And I Have A 1988 Chevy 1500 Series 4x4 And I Have Awful Fuel Milage I Can Watch The Fuel Gauge Drop While Driving......i Tuned It Up And Every Thing, It Is Just Terrible Please Let Me Know If Ne One Has Any Ideas .....thanks So Much.....chevy All The Way.....

01-19-2006, 10:06 AM	#5
02F2504x4 Senior Member Join Date: Jan 2006 Location: Cali Posts: 88	You might need to put that air filter back on thats one of your problems. Now what kind of engine do you have and what gears do you have in the truck. Plus you might want to buy some kind of fuel conditioner. I use fuel conditioner in my truck and i slowly get better gas milage every tank. You need to let us know better spects of your truck to better answer your question. __________________ 2002 F-250 4x4 CC 7.3L DIESEL Mods Edge Evo Edge Juice W/ Attitude 4 Inch Turbo Back Exhaust Straight Pipe DIY Tymar Intake Foil Delete Recon Light Strip

01-19-2006, 02:02 PM	#6
chevyguy Senior Member Join Date: Sep 2005 Location: ALABAMA Posts: 3,160	Sorry , but i dont believe in mechanic in a can remedies. It might help in prevention, but thet problem already exists. i would start by asking about gears, oversized tires, driving habits etc. __________________ When i die, i dont want to walk gracefully thu the pearly gates and turn in a unused body. i want to go sliding thru sideways and turn in a body that has been completely used up.

01-20-2006, 04:23 PM	#9
396chevy Full Member Join Date: Aug 2005 Posts: 43	diffrent view hi well for one Truck_man is right about the aircleaner but you should be getting at least 12mpg i get 13/14 and i drive tough, fast and hard daily anyway i would recomend getting a power programer because they can troubleshoot too check you fuel/air mixture and timeing my 89 chevy has 265/75/16s and 342 gears with a 350ci bored 40 over i also run a k&n tornado and tbi spacer 8.5mm wires platinum +4 plugs and a high flow oil pump. well thats just my opinion.

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01-17-2006, 08:13 PM	#2
Beaver3000 Senior Member Join Date: Jul 2005 Location: Yuba City, California Posts: 393	What kind of gas milage are we talking about? Below 10 mpg? Have you cleaned the air filter? Have you been towing anything or been running your engine hard, wheelin' or anything? My fuel guage moves around, but very slowly and almost hard to tell. How dramatically does yours move? Chevyguy will be able to help you out on this one.

01-19-2006, 01:25 AM	#3
chevy_202 Full Member Join Date: Jan 2006 Posts: 15	hi, thanks for the reply im getting below 10 miles per gallon, i don't have a air filter i just drive to and from work,i get like 50 miles to 20 dollars, at 2.39 per gallon any help would be greatley appreciated

01-19-2006, 07:31 AM	#4
gmtech Senior Member Join Date: Dec 2005 Location: farmville Va Posts: 348	What do you mean you don't have an air filter???? Did you remove it and leave it out??

01-20-2006, 02:00 AM	#7
chevy_202 Full Member Join Date: Jan 2006 Posts: 15	ok guys,thanks for the help....the truckj is a 1988 chevy 1500 series 4x4, 350ci engine. awful fuel milage,i took the air filter out,i have 34 inch bogger tires on this truck, but the problem was there before i added the tires.im not sure about the gering,it has a 700r4 trans w/overdrive, i do know the gering is stock.....hope this helps some for u chevy guys to help me out......thanks...........

01-20-2006, 10:27 AM	#8
Truck_Man Senior Member Join Date: Oct 2005 Posts: 213	You deffinately need to put the air filter back on, you never run any engine without an air filter, It will end up ruining your engine without one on it. You will be sucking in all kinds of dust and dirt that will wear your engine out. Bad idea to not use an air filter. With that year of truck, with a 350 and the size tires you have on it, I would'nt doubt it abit if you are getting gas milage under 10 mpg. My dad had a chevy truck with a 350 in it, of course it was a 79 and carburated, but i know he was getting 5 or 6 mile per gallon city, I dont know what highway was but thats all he could get out of it. The little newer model you have with fuel injection should increase the milage some but with bigger tires and if you are running it hard forget it, your gas milage in that case is probably about right.

01-21-2006, 12:20 AM	#10
chevy_202 Full Member Join Date: Jan 2006 Posts: 15	Thanks Guys But I Was Having This Problem Before I Put The Big Tires On It,and The Engine Light Comes On And Off At Times.

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