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Discussion Starter · #1 ·
Still having problems with my 2.4l 2002 santa fe. Many thanks to all for your help so far.
At stand still the MAF readings are within range. At 2000rpm it reads 9.3 gm/s. the info I have says it should be between 7.89-9.83.
When driving along at 50mph, 5th gear, engine speed 2000rpm it reads approx. 25.0 gm/s. at 3000rpm it reads 48 gm/s.
Is the MAF sensor faulty?
It is now not running very well with fault codes P0171(fuel system to lean) That code comes up whilst driving at speed. I also get P0172(fuel system to rich). I got that one whilst driving slowly in a car park.
:(:(:(
 

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the fact that you got too lean and too rich is interesting....yes i would suspect MAF at that point. check to see if it needs cleaning? TPS might be worth a look as well.
 

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Discussion Starter · #4 ·
I think I've found the problem. The exhaust has completely sheared round where the flexi section is. That would cause rough running.
Thanks for all your help.
 
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