freaking high fuel consumption

Havok_KiD

500 RPM
Senior Member
Feb 21, 2006
579
23
1,518
Hi guys

Good day to you and happy new year

i am having an evo 3 engine under my hood and apparently it has been having extremely high consumption ever few months
apparently RM20 bucks can only give me about 40km/h on a normal driving 100km/h
this is really madness as even previously when i was running my fully mod evo also does not have this high consumption

if any 1 has came about this issue kindly advice me what step or repair u did to rectify this issue as i dont want to spend money on this which is not related to be repaired

i am thinking if it could be my exhaust sensor which has gave way

engine is stock standard, has walbro and a fuel regulator

Many Thanks
 

xtremeleo

3,000 RPM
Senior Member
Oct 18, 2005
3,247
464
5,183
what did u do prior to dis high fc? installed anything new? did anything extra ordinary happened?
 

har1th7

Known Member
Senior Member
Apr 1, 2008
371
42
1,528
bad news bro...

1. get your engine diognostic, maybe a few sensor not working
(check light ON?)
2. if all sensor ok, then change fuel filter and check fuel line...
3. if all ok, install piggy bact ecu to remap ur engine and injector (if sensor ok, will be better)
4. check regulator....
5. o2 sensor at exhaust might be faulty (send wrong signal to ecu)
6. sensor at trottle body (map?) , same case, send wrong signal to ecu....

* cannot tell what problem like this, must chek all....
 

Havok_KiD

500 RPM
Senior Member
Thread starter
Feb 21, 2006
579
23
1,518
what did u do prior to dis high fc? installed anything new? did anything extra ordinary happened?
HI xtremeleo - there is nothing extraordinary done on the engine... ever since i plunk this stick engine i have only service it every month to change black oil and gearbox oil...thats it....that is what surprises me

---------- Post added at 04:50 PM ---------- 6 hour anti-bump limit - Previous post was at 04:48 PM ----------

bad news bro...

1. get your engine diognostic, maybe a few sensor not working
(check light ON?)
2. if all sensor ok, then change fuel filter and check fuel line...
3. if all ok, install piggy bact ecu to remap ur engine and injector (if sensor ok, will be better)
4. check regulator....
5. o2 sensor at exhaust might be faulty (send wrong signal to ecu)
6. sensor at trottle body (map?) , same case, send wrong signal to ecu....

* cannot tell what problem like this, must chek all....
Tnx alot har1th7 , as even i think its my sensor that gave way, but is there any reliable person/shop is able to check this. really need to sort this issue out..or else my weekly FC is almost 250bucks just to go n come back work n go near by hse on weekends
 

kevinn7

Senior Member
Senior Member
Feb 28, 2005
164
0
3,016
ya.. theres one place in usj... the row behind ah heng, at the other end.. he fixes car electrical stuff... he can fix ECUs, sensors etc..
 

Havok_KiD

500 RPM
Senior Member
Thread starter
Feb 21, 2006
579
23
1,518
ya.. theres one place in usj... the row behind ah heng, at the other end.. he fixes car electrical stuff... he can fix ECUs, sensors etc..
hi kevin...i am in usj to..where in usj is the shop???
 

xtremeleo

3,000 RPM
Senior Member
Oct 18, 2005
3,247
464
5,183
have u done any diagnostic check yet? maybe there r sensors dat need changing
 

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