VERY LOW MPG help
07-21-2004, 08:19 PM
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VERY LOW MPG help To continue my saga to pinpoint why I've been getting 9.5 MPG lately (both the DIC and 600 miles of calculation correspond), I ruled out sticking brakes using an infrared thermometer to check the caliper and disc temps and all were fine.
Now I'm thinking it's a fuel leak (xover tube?), bad O2 sensor, leaky injector, or a defective block allowing gas to seep into the crank.
Since I've confirmed the DIC is actually correct, the computer must actually be injecting this much gas into the engine. I can therefore rule out fuel tank leak, defective block/rings, and leaky injector because otherwise the DIC should be on the high side? What's left? Bad O2s? No codes have been set, other than Service A/H.
Z is out of warranty and is completely stock, save zip tie mod.
Any help greatly appreciated.
Now I'm thinking it's a fuel leak (xover tube?), bad O2 sensor, leaky injector, or a defective block allowing gas to seep into the crank.
Since I've confirmed the DIC is actually correct, the computer must actually be injecting this much gas into the engine. I can therefore rule out fuel tank leak, defective block/rings, and leaky injector because otherwise the DIC should be on the high side? What's left? Bad O2s? No codes have been set, other than Service A/H.
Z is out of warranty and is completely stock, save zip tie mod.
Any help greatly appreciated.
