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Some Acceleration Issues.

Lamentes
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Lamentes Rookie

Lamentes

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Posted

Hi guys, i've owned my 320d for a few weeks now, its the 2001 136hp version.

I'm noticing that the car has a serious lack of power under 2000rpm and simply can't pull away unless its above this.

Apart from this the car doesn't have much continuous boost and acceleration isn't that smooth. I mean, its not bad at all, just feel it could be better.

Thinking maybe MAF or ECU? Any advice on how to start combatting the low rev sluggishness?

Many thanks guys!

Olli

M1 KES Enthusiast

M1 KES

Posted
Posted

Iv not driven a 320d yet so i cant comment on their overall power but my guess would definitley be your MAF sensor...

The MAF sensor is fitted in the inlet duct on the outlet of the air filter and measures the mass of air flowing into the engine. In theory,the ecu will inject the correct amount of fuel for the amount air going in...

If the maf signal is failing, the first obvious sign is very sluggish acceleration when pulling away from rest. This is also the cause of that heart stopping delay pulling onto roundabouts and into heavy traffic.

I bet you suffer from irratic idling too when u stop at lights??

Best way to confirm this is remove it ( with the engine off!!! ) temporarily and see if its any better.

Try it on your way home from work =p its only a wire that unclips, and let us know =)

Lamentes Rookie

Lamentes

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  • Author
Posted

Thanks very much! Especially for the explanation! I might try to remove the MAF temporarily to see how it does :)

Booked in for a diagnostic at a local garage and will get back to you about results!

Lamentes Rookie

Lamentes

Posted
  • Author
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Just another thought: Will MAF issue codes actually show up if there's something wrong with them? I've read different things, some saying they will not show, others saying they will. Any clarity on this would be great! :)

M1 KES Enthusiast

M1 KES

Posted
Posted

Ahh cant help u there olli,

Im old skool brought up on american classics...

Never used a diagnostic machine =(

Guest Mister Dabsy

Guest Mister Dabsy

Posted
Posted

Check-out the EGR too... Can cause smoke and power issues !

Easy to clean !!

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