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Old 01-25-2013, 03:09 AM
RaunoV RaunoV is offline
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Location: Estonia
Join Date: Jan 2013
Posts: 8
Mein Auto: 318is 2.5i
318is Engine swap results Tachometer failures


Recently i changed my 318is (1995) engine for 525i (1992) one. Almost everything seems to work properly. One of the major issues at the moment is that after driving for a while with warm (temp. gauge in middle) engine tachometer and fuel gauge start jumping and die/drop to 0. When turning on additional electrical devices (for example blow to max, fog lights or using power windows) then these gauges wake up and work a bit more or until i turn those additional devices off. Has anyone any idea about this weird problem?

Second issue is that my full OBC show very funny fuel consumption about 4-7L/100km on highroad but when fuel gauge is working it shows about 10L/100km.

I would really appreciate if anyone has opinions or possible solutions..
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