3-Series (E21, E30)Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.
I have a 89 325i. At 1750RPM the engine sputters, and will not accelerate above 2000RPM. The check engine light came on at idle, and I ran the code checker. No codes poped up, so I assume that there is no electronic prob. Does anyone have any suggestions, ideas, have you experienced this before?
When I bought the car two years ago, a shop said that the fuel pump was a bit on the low side for output pressure.
Well I'd go with the shops sugestion and do a fuel pressure test. You should have arround 40psi at idle give or take a few psi. If it is on the low side I would try putting in a new fuel filter if it hasn't been done recently. Recheck the pressure after that and if it is still low you may have to bite the bullet and buy a new pump. If the fuel pressure is really high you either have a cracked vaccum hose going to your fuel pressure regulator or the FPR has a broken diaphram. Another thing to check is the connector to the AFM. If it is dirty or loose the car won't want to run right and will throw a "soft" check engine light.
what is the "AFM" that could be dirtly or loose, my 325i conv. is hesitant at times and sputters when driving normal...starts fine, drives good, but still sputters,,, i left a new post Nov.23rd 2004 and hope i can fix it..
but what is this...AFM ?
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<span style='color:red'> its the ones who cant even drive slow that think i cant drive better fast..</span>
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