Menu toggle

indle hunt/misfire

T

tex

New member
my 2000 3.2s has always had a lumpy idle every nown again when cold now getting abit worse had it for 3yrs now its my summer weekend toy/winter project, when I got the car I put into Porsche for major service and they replaced
spark plugs and a couple of coil packs it still didn't idle smooth, I've replaced the AOS cleaned the throttle body and I got a cheap maf (yes I know I just wanted to see if the original maf was kaput) but it still misses/hunts until warm
but even then it still isn't 100% smooth I've no excessive vacuum at oil filler cap doesn't seem to be any leaks in air intake it's just annoying me, I put my durameterics on but no codes I did find number 3 plug missed 13 times in a few seconds but thought Porsche would have picked that up and
informed me coil pack was bad going to replace packs and maf soon. but was just wondering if anybody has any thoughts or ideas. also after cheap maf was installed my fuel economy went downhill used to get 25 to 30mpg on dual carriageway doing 70ish same journey now 19 to 23mpg..yes I know don't buy cheap maf

cheers
tex
 
I would strongly recommend that you have the bores scoped as rough idle and higher fuel consumption are associated with the dreaded bore scoring.
 
Cheers for reply i don't do many miles probably 3000 miles last year and 10000 since i bought it and it hasn't use any oil and no blue smoke which is more the symptoms of bore score not saying mine wont be scored but with 48000 miles on the clock with the original coils i will change them and if it is still the same will get the bores scoped at my local indie
 
Changed plugs and coil packs and new bosch maf and all good now been for a spirited drive total difference smooth as silk and fuels gained 4mpg
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Archant Dialogue
Back
Top