31L/100 km mileage
#1
New Member
Thread Starter
31L/100 km mileage
Hi - so the engine is in the car now and it's running, but the mileage is 31 L per 100 km, which means something is really wrong.
A few possibilities:
O2 sensor
Air leak in manifold
MAF or MAP sensor
Any suggestions? Any checks you can suggest?
Thanks, O6B
A few possibilities:
O2 sensor
Air leak in manifold
MAF or MAP sensor
Any suggestions? Any checks you can suggest?
Thanks, O6B
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OhSixBalt (12-04-2018)
#7
New Member
Thread Starter
Engine power reduced message appears at startup. Disconnected MAF and car stopped so MAF may be ok, swapped in a new air filter and another MAF - same problems at startup (rev 2500 rpm) then it went down to normal 900 or so. Cleared the codes and it seems to be fine now. Will it return who knows. Yes just took it for a drive and 480 and 106 codes appeared. I might have to rethink a long trip tomorrow I don't want to damage anything.
Last edited by OhSixBalt; 11-17-2018 at 05:10 PM.
#9
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Thread Starter
Here's a solution path from website http://ricksfreeautorepairadvice.com/p0480-cobalt-fix/Fix code P0480 on Cobalt
This vehicle has a 2-speed cooling fan. If you run into the P0480 code and find that the fan will only run on the highest speed, start by checking for a blown cooling fan fuse #1 in the underhood fuse block. If that’s ok, swap cooling fan relay #1 with the high speed cooling fan relay #2. Both relays have the same part number.
Rest the PCM to clear the trouble code and drive the vehicle. If the low speed relay is bad, the swap will result in a new code, P0481. That will confirm that the relay is bad. Replace the low speed relay.
However, if the P0480 returns with the relays in their swapped positions, check the wiring harness for an open condition. Check the continuity of the dark green wire from the #1 cooling fan relay to the PCM, pin #47
© 2012 Rick Muscoplat
Source 480 Code solution
This vehicle has a 2-speed cooling fan. If you run into the P0480 code and find that the fan will only run on the highest speed, start by checking for a blown cooling fan fuse #1 in the underhood fuse block. If that’s ok, swap cooling fan relay #1 with the high speed cooling fan relay #2. Both relays have the same part number.
Rest the PCM to clear the trouble code and drive the vehicle. If the low speed relay is bad, the swap will result in a new code, P0481. That will confirm that the relay is bad. Replace the low speed relay.
However, if the P0480 returns with the relays in their swapped positions, check the wiring harness for an open condition. Check the continuity of the dark green wire from the #1 cooling fan relay to the PCM, pin #47
© 2012 Rick Muscoplat
Source 480 Code solution
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