Fuel economy still suck big time. 02 Express.
#1
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Hey all.
I have changed my 02 sensors, muffler to a magnaflow, checked my engine temp sensor and still have a van that gets 10 miles to a gallon. When I bought it 80,000 kms ago...( it had 100k now 185 k)...it got 14 in the city and 15 1/2 on the hwy. Now its crept down to 10 mpg over the last 6 months or so.
I cannot figure it out. I guess I will have to pay for a good scope and to have the cats checked....
...anyone else had this problem and what fixed it?
Thanks.
I have changed my 02 sensors, muffler to a magnaflow, checked my engine temp sensor and still have a van that gets 10 miles to a gallon. When I bought it 80,000 kms ago...( it had 100k now 185 k)...it got 14 in the city and 15 1/2 on the hwy. Now its crept down to 10 mpg over the last 6 months or so.
I cannot figure it out. I guess I will have to pay for a good scope and to have the cats checked....
...anyone else had this problem and what fixed it?
Thanks.
#2
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There are so many things to consider that could be causing that. Tire pressure, spark plugs & wires, brakes calipers, timing, fuel pump pressure and/or filter, type of fuel, compression. The list can go on & on. Also depends on the driver, you or someone else, could be accelerating harder than normal which would kill your MPG. Without any real codes to troubleshoot it's kinda just a crap shoot.
#3
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Maybe you need to do the SCPI Conversion to MFI (Multiport Flexible Injection). If your old injection nozzels are leaking (and they will sooner or later) the consumtion increase drastically.
#4
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Been using fuel system treatments and a lighter right foot. It has come up to just under 12mpg city, and I got just under 14 hwy a little while ago.
I don't want to get to deep into cost to improve things as it won't pay for itself. Not going to keep this van long enough....
I don't want to get to deep into cost to improve things as it won't pay for itself. Not going to keep this van long enough....
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