mikey4410 Posted August 23, 2014 Share Posted August 23, 2014 A fuel pump should not change afrs on idle or cruise. The ecu corrects these things and and it always aims for 14.8Wether the fuel pressure is at 2bar or 4bar.ecu sorts thiswot situations with stock setups is then governed by a rrfpr. Quote Link to post Share on other sites
Ollieh17 Posted August 23, 2014 Author Share Posted August 23, 2014 I didnt think it was the fuel pump.starting the car it idles spot on 14.8 few seconds later drops right down Quote Link to post Share on other sites
TrisK Posted August 24, 2014 Share Posted August 24, 2014 I didnt think it was the fuel pump.starting the car it idles spot on 14.8 few seconds later drops right downLambda maybe Quote Link to post Share on other sites
Ollieh17 Posted August 24, 2014 Author Share Posted August 24, 2014 From previous experience not having my lambda plugged in has made no difference on rhe wideband Quote Link to post Share on other sites
richardc9052 Posted August 24, 2014 Share Posted August 24, 2014 Seriously? Try unplugging it again and take it for a drive. Quote Link to post Share on other sites
Ollieh17 Posted August 24, 2014 Author Share Posted August 24, 2014 Yup Quote Link to post Share on other sites
Ollieh17 Posted August 25, 2014 Author Share Posted August 25, 2014 Okay, emanage completly unplugged running on standard fpr and a walbro fuel pump.Have a fuelling issue with my glanza. Starting the car up it fuels spot on 14.8 on wideband. Eventually it drops right down to 12. With slight throttle it goes up to 13ish then drops again on a cruise. Fuel fines on boost. If i let completely off the peddle while in gear and rolling the wideband goes off the scale(lean)Only thing changed since the issue started was the fuel pump. Any ideas APART from the lambda? As the lambda is 6months old. Not driving the car atm as not payed until friday so as the problem suddenly appeared im Hoping its something simple Quote Link to post Share on other sites
JayJ Posted August 26, 2014 Share Posted August 26, 2014 (edited) Do you know water temps? If the temp sensor is not working, ecu will be in "warm up enrichment" state until water reaches 65c degrees. Edited August 26, 2014 by JayJ Quote Link to post Share on other sites
Ollieh17 Posted August 26, 2014 Author Share Posted August 26, 2014 Have a water temp gauge sits just below 80c. It also leans out with a slight bit of throttle Quote Link to post Share on other sites
mikey4410 Posted August 26, 2014 Share Posted August 26, 2014 Upon starting the car 14.8 isnt spot on being right.start up is 11-12 afr and not 14.8 Quote Link to post Share on other sites
Ollieh17 Posted August 26, 2014 Author Share Posted August 26, 2014 When the cars warm that is Quote Link to post Share on other sites
Gilly Posted August 26, 2014 Share Posted August 26, 2014 Are you using stock 295 injectors? The uprated pump won't make any difference to the afrs, its all down to the regulator to control the pressure. I have found that some lambda sensors don't even last 6 months especially some of the universal ones. Quote Link to post Share on other sites
richardc9052 Posted August 27, 2014 Share Posted August 27, 2014 Are you using stock 295 injectors? The uprated pump won't make any difference to the afrs, its all down to the regulator to control the pressure. Unless the pump is flowing more than the fpr can handle. Fpr's deteriorate as well. I've seen this happen before. Think of it in the same manner as boost creep but with the injectors, once touch the throttle your increasing fuel pressure and opening the injectors longer which will stabilise fuel flow.. It doesn't happen often but I have witnessed it. Replacing the fpr with another standard one fixed the issue. Quote Link to post Share on other sites
Gilly Posted August 27, 2014 Share Posted August 27, 2014 (edited) Unless the pump is flowing more than the fpr can handle. Fpr's deteriorate as well. I've seen this happen before. Think of it in the same manner as boost creep but with the injectors, once touch the throttle your increasing fuel pressure and opening the injectors longer which will stabilise fuel flow..It doesn't happen often but I have witnessed it. Replacing the fpr with another standard one fixed the issue.I also agree with this regarding the FPR, quite a number of people like to carry on with the stock fuel regulator on different turbo setups. These cars are knocking on now and the regulators will be tired, plus not being able to put a gauge up to the stock unit isn't great.its just worth that bit extra money to get a sard rrfpr- WITH A DECENT GAUGE might i add to keep everything sweet. Edited August 27, 2014 by Gilly Quote Link to post Share on other sites
Ollieh17 Posted August 27, 2014 Author Share Posted August 27, 2014 I have a rrfpr but havent fitted it yet! Quote Link to post Share on other sites
richardc9052 Posted August 27, 2014 Share Posted August 27, 2014 Also I don't like aftermarket fuel pressure regs especially without a mappable ecu and rr tuning lol the rising rate might be slightly out compared to standard so you could end up too rich or lean in either ends of the map. That's why I'd recommend a good condition oem fpr. Or if they can be got new, a new one Quote Link to post Share on other sites
Ollieh17 Posted September 6, 2014 Author Share Posted September 6, 2014 Replaced the lambda and no difference. Going to put the old pump back in and try that Quote Link to post Share on other sites
mikey4410 Posted September 6, 2014 Share Posted September 6, 2014 Been through all this as above and wideband failed giving odd readings Quote Link to post Share on other sites
Ricky@Race-Tech Posted September 8, 2014 Share Posted September 8, 2014 Get the map checked/it mapped ASAP. It might be running rich at idle but lean on boost. RegardsRicky Quote Link to post Share on other sites
Ollieh17 Posted September 8, 2014 Author Share Posted September 8, 2014 This was on standard ecu.all sorted now Quote Link to post Share on other sites
TrisK Posted September 8, 2014 Share Posted September 8, 2014 This was on standard ecu.all sorted nowWhat was it? Quote Link to post Share on other sites
Phil Posted September 8, 2014 Share Posted September 8, 2014 (edited) Lambda maybe maybe this your o2 sensor is what pulls/changes fueling at idle, your map sensor needs to see voltage and your TPS is on off. but if the emanage was mapped on bigger injectors it'll be mega leanon idle with just your o2 sensor trying to pull it down. so mostly likely a bad o2 sensor. Phil Edited September 9, 2014 by Philm Quote Link to post Share on other sites
Ricky@Race-Tech Posted September 9, 2014 Share Posted September 9, 2014 If the emanage was mapped on bigger injectors it would be leaner. maybe this your o2 sensor is what pulls/changes fueling at idle, your map sensor needs to see voltage and your TPS is on off. but if the emanage was mapped on bigger injectors it'll be mega rich on idle with just your o2 sensor trying to pull it up. Phil Quote Link to post Share on other sites
Phil Posted September 9, 2014 Share Posted September 9, 2014 If the emanage was mapped on bigger injectors it would be leaner. My mind was elsewhere when i thought that comment through !! post edited for correctness. Phil Quote Link to post Share on other sites
Ollieh17 Posted September 15, 2014 Author Share Posted September 15, 2014 (edited) seems I lied....start happening again randomly. Emanage is completely unplugged, just running on standard ecu Edited September 15, 2014 by Ollieh17 Quote Link to post Share on other sites
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