Hi all i'm in the process of swapping a turbo engine into my N/A, hit a snag though.
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It won't idle with the AFM attached.
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It's Rev 2 Turbo engine pretty much stock.
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The engine starts and runs fine without the AFM attached, with it attached it turns over and if your quick enough to catch it you can hold at 2k revs and it runs fine.
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Tried 2 AFM's, 2 ECU's had a mutimeter on the loom, checked the IACV and the TPS and all is right there.
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There are no vaccum leaks and the OBD1 shows no error codes.
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Only thing we can find is it runs a little bit rich bit that shouldn't cause this problem.
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Anyone ever had anything like this of can think of anything that it might be.
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Starting to lose my rag now as it's my daily car so I need it back on the road ASAP.
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