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Old 12-20-2011, 03:28 AM   #1
Killa B
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Red face slugish before op-temp

i have recently rebuild my 7mge, i have noticed it takes it about 15-20 minutes to reach op-temp. The engine runs really slugish when i drive it under op temp almost like ive lost 40% power its fine if its at op temp though. Also if it hasnt reached op temp and i turn the heat on it cools the engine down pretty quick i figured that was normal because its an older car. Im using Valvoline max life 10-W30 oil in it. does anyone know what could cause this. Is it just the engine hasnt broke in well enough yet?
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Old 12-20-2011, 07:12 PM   #2
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Test the AFM, ECU temp sensor, make sure the cold start injector isn't leaking and verify that both mechanical and ignition timing are set correctly.
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Old 12-20-2011, 11:28 PM   #3
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where is the ecu temp sensor located?
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Old 12-21-2011, 12:10 AM   #4
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There's a nice graphic in a post on the temp sensor located in the FAQ section.
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Old 12-21-2011, 01:28 AM   #5
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first time ive heard of an over efficient cooling system with these cars. wondering if the thermostat is stuck open, at least as part of the problem.

sounds alot like a timing issue though. follow the aforementioned advice.
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Old 12-25-2011, 03:12 AM   #6
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Talking

okay so i apologize i probably should have said something about oil leaking only on exhaust side. Turns out i didnt tighten up the 3 plugs in the block. Tightened them down and its A LOT better motor even sounds more healthy. hope this can help someone in the future.
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Old 12-25-2011, 06:59 PM   #7
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Little details man, glad u got it sorted tho. If anything new comes up, let is know.
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