DanXiao
Gear THREE
Speeding is Trilling, But Its Kill......!
Posts: 489
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Post by DanXiao on May 22, 2009 21:23:18 GMT 8
Hey guys, I m driving a Kia Rio 1.5M (2004), mileage 110000km. I have difficulty on starting my car every morning or whenever the engine has been cool down for about 5 hours. I always need to crank 2 to 3 times to start up my car. After start up the car is working perfectly fine. There is no engine check light and have bring to a few car workshop to diagnose. The result show all sensor reading are working fine. This problem only occur during every morning or whenever the engine has been cool down for about 5 hours. Once the car engine has warm up, I switch off the engine and try starting up again. The problem won't shown up and the start up just need to crank once. Guys, could you advice me what is the possible causes??
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Post by subzero on May 22, 2009 21:46:02 GMT 8
Battery dying soon? Or maybe ur alternator is not charging good..
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Post by rk2009 on May 22, 2009 22:31:29 GMT 8
Battery dying soon is possible ,
but is your coolant level is always low.
If yes better check could be cylinder gasket leaking. experience before
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Post by Mr Biscuit on May 23, 2009 11:29:17 GMT 8
Hey guys, I m driving a Kia Rio 1.5M (2004), mileage 110000km. I have difficulty on starting my car every morning or whenever the engine has been cool down for about 5 hours. I always need to crank 2 to 3 times to start up my car. After start up the car is working perfectly fine. There is no engine check light and have bring to a few car workshop to diagnose. The result show all sensor reading are working fine. This problem only occur during every morning or whenever the engine has been cool down for about 5 hours. Once the car engine has warm up, I switch off the engine and try starting up again. The problem won't shown up and the start up just need to crank once. Guys, could you advice me what is the possible causes?? There are a few possibilities which I can think of: 1) Battery 2) Spark Plugs 3) Weak Fuel Pump- During cold start, its always a gd habit to turn the key to "On" for a few seconds b4 cranking the engine. The few seconds of waiting is to allow the fuel pump to feed fuel to the fuel regulator, and if u are sensitive enough, u'll hear the "eee" sound when u put the key to "On". It's also not advisable to drive till the fuel tank is almost empty as the Fuel pump' lifespan will be shorten. Fuel pump will be very hot when not enough fuel as they need to work harder, hence sufficient fuel in the tank is encouraged to prolong it.
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DanXiao
Gear THREE
Speeding is Trilling, But Its Kill......!
Posts: 489
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Post by DanXiao on May 24, 2009 0:15:38 GMT 8
thnks for the reply guys, i have changed the battery, fuel pump and spark plug before. and the problem still persist. now the car mechanic said maybe is the air flow sensor or crank sensor. i have changed two O2 sensor which is at the extractor area and the exhaust down pipe. problem still persist. i have let C&C to diagnose, result is everything working fine from the reading. This start up problem have been with mi for 2 yrs and it only occur during when the engine is cool for a long time.
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Post by Mr Biscuit on May 26, 2009 19:08:35 GMT 8
thnks for the reply guys, i have changed the battery, fuel pump and spark plug before. and the problem still persist. now the car mechanic said maybe is the air flow sensor or crank sensor. i have changed two O2 sensor which is at the extractor area and the exhaust down pipe. problem still persist. i have let C&C to diagnose, result is everything working fine from the reading. This start up problem have been with mi for 2 yrs and it only occur during when the engine is cool for a long time. Just to check, is your car currently on any piggyback ECU?
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Post by cee1071 on May 30, 2009 16:41:59 GMT 8
Hi from from wat u have explained can crank but unable to start imho could be your fuel injector leaks/ crankshaft sensor /engine management control unit faulty.Gd luck
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DanXiao
Gear THREE
Speeding is Trilling, But Its Kill......!
Posts: 489
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Post by DanXiao on May 31, 2009 22:42:30 GMT 8
hey guys! today the engine check lite juz came on. i went to car mechanic to see wat the fault code. it show P0172, fuel mixture too rich. i hv change throttle body n open pod. nw the car mechanic ask mi to change back throttle body and change a new airflow sensor. for C&C advice mi to change the MAF.
hey guys! those hv met this problem before, pls kindly advice mi wat to do. thnks!!
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Post by Mr Biscuit on May 31, 2009 23:32:03 GMT 8
hey guys! today the engine check lite juz came on. i went to car mechanic to see wat the fault code. it show P0172, fuel mixture too rich. i hv change throttle body n open pod. nw the car mechanic ask mi to change back throttle body and change a new airflow sensor. for C&C advice mi to change the MAF. hey guys! those hv met this problem before, pls kindly advice mi wat to do. thnks!! Did u enlarge your throttle body? How long ago & is this a new mod? If so, Y not put back the original throttle body,reset the ECU & monitor?
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DanXiao
Gear THREE
Speeding is Trilling, But Its Kill......!
Posts: 489
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Post by DanXiao on Jun 12, 2009 11:56:22 GMT 8
its has been for 3 yrs liao.... everything went fine until nw wor... sian my car keep falling sick liao...
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Post by Mr Biscuit on Jun 12, 2009 23:43:02 GMT 8
its has been for 3 yrs liao.... everything went fine until nw wor... sian my car keep falling sick liao... If u are on any piggyback ECU, then most likely could be the crank sensor that is weak that caused the problems u mentioned. I did encounter this problem before, on the previous version Unichip 32bits (green colour).
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DanXiao
Gear THREE
Speeding is Trilling, But Its Kill......!
Posts: 489
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Post by DanXiao on Jul 4, 2009 21:49:30 GMT 8
hey guys my car mechanic juz change the iginition distributor n nw start up problem solve liao. nw is only the jerking part of the car. fault code persist P0172, fuel mixture too rich.
did anyone face wif the fault code before?? could u help mi wat is the possible causes. thank u guys!
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Post by Mr Biscuit on Jul 5, 2009 13:23:46 GMT 8
hey guys my car mechanic juz change the iginition distributor n nw start up problem solve liao. nw is only the jerking part of the car. fault code persist P0172, fuel mixture too rich. did anyone face wif the fault code before?? could u help mi wat is the possible causes. thank u guys! Hi, I guess this is the 3rd I'm trying to ask you if u are on any piggyback ECU??? If No: 1) Try reset ECU, to allow all sensors & ECU to relearn all parameters. 2) The MAF sensor might be the problem, as the reading it gets might be too inaccurate, hence trigger the ECU to compensate to enriching the A/F Ratio. If Yes: 1) Need to retune the A/F Ratio as your new ignition distributor might have new tolerance levels for your ignition timing, hence the fuel parameters might not match it at different loads when the car is supposed to advance or retard. End of the day, jerking is usually caused by Rich A/F ratio mixture. mods like AFR (Adjustable Fuel Regulator), After-market Fuel-Pump, High CC Fuel Injectors & agressive tuning are the common culprits.
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DanXiao
Gear THREE
Speeding is Trilling, But Its Kill......!
Posts: 489
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Post by DanXiao on Jul 27, 2010 0:14:34 GMT 8
hi piggy sorrie took so long to reply u i m not on piggy back.
but nw i face a new problem fuel mixture too lean fault code p0171. MAF sensor clean liao, fault code persist, driving feel a bit lack of power, other then tat all seem normal. my car 6 yrs liao loh, nw giving mi headache. lol.....
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