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Verified Tsikot Member
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December 25th, 2009 05:44 PM #1Driving a lancer 91 EFI. Lately may intermittent problem sya na di ko maintindihan. Naeexperience ko with more frequency lately na ung engine parang sinisinok and nagjejerk (di naman nagtatagal) kapag tatapak sa gas lalo kapag akyatin at mag-oovertake, then noticeable yung loss of power lalo na pag accelerating. Some days normal sya, some days hindi. Lumalabas yung sakit lalo na pag-long drive, seems ok on short level trips though. I suspect fuel pump, kase parang kinakapos at bagal umakyat ng rpm. Ok naman air filter, sparkplugs and no CEL is present. Some say might be dirty fuel tank. Ano kaya?
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December 25th, 2009 07:26 PM #2
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December 25th, 2009 10:08 PM #3Thanks Jick
Have ruled out those you mentioned. I have replaced the fuel filter less than 2 years ago and the spark plug wires just 3 months ago, but still no luck
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December 26th, 2009 02:36 AM #4Subukan mo drain mo ung fuel tank mo para mapalitan ung gas to rule out ung dirty fuel tank/water in tank. kadalasan naman may drain plug ang mga gas tank sa ilalim sa lowest point nito. Tapos lagyan mo na ng gas paka drain mo bili ka ng fuel system treatment/gas treatment parang STP sa ACE meron nun ihalo mo lang sa gas. Panglinis un ng injectors pero damay na rin ang tangke. Kapag ganun pa rin cguro fuel pump na talaga.
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December 26th, 2009 05:17 AM #5
have your engine vacuum checked. it usually tells if the exhaust system is clogged, if the valve timing is off or tell you if the ignition timing is off but confirm with a stroboscopic tilming light. also check your ignition coil output. these should have been done when you had a tuneup specially it was giving you sluggish engine performance
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Verified Tsikot Member
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December 26th, 2009 11:53 PM #6you can also try checking yun fuel pump relay, ganyan din problem ko dati
lahat na tiningnan yun pala sunog na yun relay. hth.
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December 27th, 2009 10:22 PM #7Sorry for this dumb question, but where can I find the fuel pump relay? Also, my gas tank is acting weird lately. When gassing up, the pump would always automatically stop midway upon filling. The gasoline boy would say the tank is full but it is actually not! Hmm?
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December 28th, 2009 02:42 AM #8Kapag sunog na ang relay di na gagana totally ang fuel pump mo. ang ginagawa kse ng relay connection lang siya direct sa battery at pinabababa nya ang amps sa mga switch mo at wires mo para hindi lang ito masunog. So kung sunog ang relay ng Fuel pump mo, putol na connection, dapat di na tumatakbo yang auto mo. Tingin ko linisin mo muna gas tank mo. Kse pate ung guage sa loob ng fuel tank mo nagloloko. And wala naman CEL dba? kse kung tune up kailangan nyan or sensors, vacuum, ignition timing...etc. meron na dapat Check Engine light sa panel guage mo.
Anyway, nabaha ba auto mo?
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Verified Tsikot Member
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January 31st, 2010 04:12 PM #9I just want to share the definition and function of the relay in a vehicle. The relay is an electrical device that opens or closes a circuit or circuits in response to a voltage signal. Now, why are we using relays in our vehicles?
The contacts of the relays are large enough to carry high or sufficient load current. Notice the common vehicle relays that are used, like the bosch. There is a mark 30 amps. Meaning it's contact can carry as large as 30 amps load current compared to the common or ordinary contacts of a vehicle switch. That's why we are using a relay in a vehicles. Now what the ordinary switch does is just to open and closed the relay coil who has a small amount of load current which will not burned out the contact of said switch.
Furthermore, the relay NEVER LOWER the current in your vehicle WIRES. If these relays lower the current passing through the vehicle wires, there will be voltage drop in your vehicle electrical system and any device connected therein will not function or operate normally.
Kindly refer to the internet how are the LOAD, SWITCH & VEHICLE RELAYS are connected to fully understand the above.
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December 28th, 2009 04:19 PM #10
harimon,
your fuel filler neck is equipped with a restrictor so you won't be able to pump leaded fuel into the tank, that causes the gas station nozzle to trip, also, the kinks and bends of the filler neck makes the flowing gasoline into the tank create a backpressure simulating a full tank. as for the location of the fuel pump relay, it is on the right side of the console in front of the shifter
jick
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