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Author
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Topic: major drop in mpg's any idea's why?
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1989lx5.0
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Member # 3699
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posted
 
 
89 lx pretty much stock i went from about 22 mpg to about 10 mpg fresh tuneup about 4 months ago only driven about 1 month out of the 4. it still runs good but a slight power loss what do you guys think, o2 sensers? cats getting clogged? or ?
thanks,
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1979 pace car
1985 svo
www.californiafords.com the better calfords
Posts: 552 | From: near fresno | Registered: Oct 2003
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93venom
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Member # 778
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posted
EGR valve
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93 cobra #3445
1988 ranger-302 in progress
2003 ranger fx4 level 2
Posts: 604 | From: Peninsula | Registered: Jan 2002
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1989lx5.0
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Member # 3699
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posted
do you think its clogged or just bad is there any way to test it
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1979 pace car
1985 svo
www.californiafords.com the better calfords
Posts: 552 | From: near fresno | Registered: Oct 2003
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Blue Oval
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Member # 2548
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posted
you could try cleaning it but new is alwalys good.the 02s are possible whens the last time they were changed?
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65 Coupe 306, AFR's
89 Cali. Ed. Saleen "sold"
BAB 89 GT
08 Yamaha R6
Posts: 2345 | From: Sacramento | Registered: Mar 2003
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1989lx5.0
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Member # 3699
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posted
never i have had the car for about a year put on about 20,000 miles
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1979 pace car
1985 svo
www.californiafords.com the better calfords
Posts: 552 | From: near fresno | Registered: Oct 2003
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mike g
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Member # 2919
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posted
do you ever smell a fuel smell(fuel leak possibly)?
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FOUR EYED PRIDE!!!!!!
Posts: 289 | Registered: Jun 2003
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1989lx5.0
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Member # 3699
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posted
i have never noticed a fuel smell. that is something i will check tomorrow thanks
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1979 pace car
1985 svo
www.californiafords.com the better calfords
Posts: 552 | From: near fresno | Registered: Oct 2003
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SFfiredog
New Member
Member # 3695
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posted
make sure the thermostat is not stuck open.
If the engine doesn't warm up it will stay in open loop and the gas milage goes down the toilet.
This can also lead into overloading the cats with fuel and causing them to clog up and the engine will loose power.
HTH,
Mike
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'01 Lightning
'99 SVT Contour
'66 Superformance Cobra replica
'46 American LaFrance High Pressure
Battery Wagon
Posts: 2 | From: San Francisco | Registered: Oct 2003
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1989lx5.0
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Member # 3699
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posted
quote:
Originally posted by SFfiredog:
make sure the thermostat is not stuck open.
If the engine doesn't warm up it will stay in open loop and the gas milage goes down the toilet.
This can also lead into overloading the cats with fuel and causing them to clog up and the engine will loose power.
HTH,
Mike
i think you might have solved the problem i never thought of that this thing never gets hot and now that its getting cold the gauge dosent move at all, thanks for the help guy's ill try a thermastat, o2's and check out the egr i am going to be puting the spray to it real soon ![[burnout]](graemlins/burnout.gif) so i need to make sure everything is ready
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1979 pace car
1985 svo
www.californiafords.com the better calfords
Posts: 552 | From: near fresno | Registered: Oct 2003
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