andymc1973 199 Posted April 12, 2018 bought this last week and it seemed to be a lovely little car, on the drive home it put the spanner light on and seemed to have a miss/hesitation, called surecheck and as usual its not covered, we scanned the code and got back P0171 System Too Lean ' BANK 1, anyway cleared the code and it hasn't come back but the miss is still there Anyone come across this before we start throwing parts at it? Andy Share this post Link to post Share on other sites
have a word with the wife 299 Posted April 12, 2018 (edited) check for air leaks split pipes to begin, does this thing have a maf ? does it have normal air filter ? [or k&n ] unplug the maf, take it for a drive, see if misfire goes [ this will put light on ] Edited April 12, 2018 by have a word with the wife Share this post Link to post Share on other sites
andymc1973 199 Posted April 12, 2018 Unplugged the maf and miss still there and didn’t put the light on and no it hasn’t been blanked Share this post Link to post Share on other sites
It's me 615 Posted April 12, 2018 well i don't deal in corsas but i know when i did you couldn't disconnect the maf to get it to work on the ecu fall back figures you had to nick one off another corsa and see if that was the fault,also the ones i bought of ebay were crap they lways needed a £90 dealer one (factors bosch) maf usually wont show a fault code either so you need to look at live data Share this post Link to post Share on other sites
WTAC 1 Posted April 12, 2018 Is your scanner able to give live data? Have a look at the lamba readings Share this post Link to post Share on other sites
andymc1973 199 Posted April 12, 2018 yes its off to auto electricians just wondered if anything obvious, rough day today with one thing or another Share this post Link to post Share on other sites
Stephen 21 Posted April 12, 2018 Think that’s everyday with cars lol Share this post Link to post Share on other sites
andymc1973 199 Posted April 12, 2018 stephen you dont know the half (yet) Share this post Link to post Share on other sites
Stephen 21 Posted April 12, 2018 Ohh hope ur ok mate Share this post Link to post Share on other sites
sparky 274 Posted April 12, 2018 Surely coil pack and plugs are the first things to look at? Share this post Link to post Share on other sites
andymc1973 199 Posted April 12, 2018 They’ll put a light on, always have so far with me Share this post Link to post Share on other sites
BHM 994 Posted April 13, 2018 How many Corsas did you buy - 3? Share this post Link to post Share on other sites
andymc1973 199 Posted April 13, 2018 Bought one got two free Share this post Link to post Share on other sites
Stalker 180 Posted April 13, 2018 Lean codes are usually an air leak? EGR? Map sensor? - Air leaks are rare as they don't have a lot of pipework, id go with MAP sensor - live data is going to be your friend. Share this post Link to post Share on other sites
peter..o 8 Posted April 13, 2018 Worth doing a compression check,seen that code coupled with a slight miss/hesitation was burned valve,had it on polo and corsa and fiat 500(tho the 500 was actually tight tappets,was shim type tappets and someone had been there before and cocked up)keep us informed!!! Share this post Link to post Share on other sites
Stephen 21 Posted April 13, 2018 is this the good one of the 3 Share this post Link to post Share on other sites
andymc1973 199 Posted April 17, 2018 coil pack and plugs! a resistor had melted throwing up the spurious code Share this post Link to post Share on other sites
sparky 274 Posted April 17, 2018 11 minutes ago, andymc1973 said: coil pack and plugs! a resistor had melted throwing up the spurious code Like most things in life, the simple is often overlooked. Share this post Link to post Share on other sites
have a word with the wife 299 Posted April 17, 2018 Share this post Link to post Share on other sites
