NEED A PROFESSIONAL DIAGNOSIS (SOLVED!)

^^!SPAWN!^^ · Postby **^^!SPAWN!^^** » June 2nd, 2008, 7:31 am

Hey guys , I need one of you to please help me diagnose a problem with my QG13DE AD Wagon .

Problem is that I did a complete service , but somehow the car takes very long to build up speed , it's worse when the a/c is on , and it still feels kinda lazy , can anyone tell me what causing this ???

b18b_turbo · Postby **b18b_turbo** » June 2nd, 2008, 8:42 am

check if the intake was tampered with or something blocking air flow....

^^!SPAWN!^^ · Postby **^^!SPAWN!^^** » June 2nd, 2008, 9:13 am

^^ The air filter(drop in) was replaced with a new one , as for the blocking of the air flow I clueless on how to check that ...

Dragsta · Postby **Dragsta** » June 2nd, 2008, 9:41 am

Problem is that I did a complete service , but somehow the car takes very long to build up speed , it's worse when the a/c is on

were u getting this problem b4 or after the service??

what exactly did the service contians?

did they use the correct plugs?

is the car idling normall??

^^!SPAWN!^^ · Postby **^^!SPAWN!^^** » June 2nd, 2008, 11:19 am

^^ Was getting it before the service , tried everything :-

The wrong plugs were bought , had to replace them .
The car idling normal , but it hard starts in the morning sometimes , when it starts it feels like it wanna cut off but that's prob how the engine cold , (I could be wrong).
The service included Plugs , Oil Change , Tranny Oil Change , Cleaning of the old air filter (which i changed recently) .

turbohead · Postby **turbohead** » June 2nd, 2008, 1:26 pm

wat accesories do you have on the car ne heavy rims an such? wat type oil an plugs?

Postby **Hook** » June 2nd, 2008, 1:28 pm

ignition timing?

^^!SPAWN!^^ · Postby **^^!SPAWN!^^** » June 2nd, 2008, 2:43 pm

turbohead wrote:wat accesories do you have on the car ne heavy rims an such? wat type oil an plugs?

Not heavy rims , 15's Hypersilver , Oil is Castrol , plugs I believe is NGK ......

turbohead · Postby **turbohead** » June 2nd, 2008, 2:56 pm

well once you are usin the recommended 20w50 oil it shud b gud an well ngk is gud plugs...hmmm..ac idle control valve maybe?

^^!SPAWN!^^ · Postby **^^!SPAWN!^^** » June 2nd, 2008, 7:21 pm

Idle control valve ? I hope is not an expensive part to replace

.

Dragsta · Postby **Dragsta** » June 2nd, 2008, 7:43 pm

ignition timing?

x2 check it

Injectors??

^^!SPAWN!^^ · Postby **^^!SPAWN!^^** » June 2nd, 2008, 8:04 pm

Oh dragsta I forgot injectors were serviced also ... how u checkin ignition timing ?

cinco · Postby **cinco** » June 2nd, 2008, 8:19 pm

check your battery/alternator make sure it charging properly
make sure the poles clean and your ground is not oxidised and properly attached to an unpainted spot on the body
qg13 is not electronic timing though? do they have a distributor?
replace the plug wires also

^^!SPAWN!^^ · Postby **^^!SPAWN!^^** » June 2nd, 2008, 8:39 pm

^^ It's not plug wires cinco , it's a coilpack .

Postby **Hook** » June 2nd, 2008, 11:47 pm

is the Check Engine Light on?

have you done a diagnostic scan on it?

cuz really it could be anything eh...I would've thought a/c idle-up valve but u said it's there even without the a/c...if it's affecting moving performance as well, it could be related to airflow, but have it scanned to be sure

THE SYNDICATE · Postby **THE SYNDICATE** » June 3rd, 2008, 6:33 am

^^^^agreed!

Have it scanned!

^^!SPAWN!^^ · Postby **^^!SPAWN!^^** » June 3rd, 2008, 7:38 am

But the check light not on ....
And can you find a fault when u scan even if the check light is not on ???

Dragsta · Postby **Dragsta** » June 3rd, 2008, 9:42 am

Dragsta · Postby **Dragsta** » June 3rd, 2008, 9:43 am

u try cleaning trottle body??

Saeed · Postby **Saeed** » June 3rd, 2008, 10:54 am

QG naturally lazy....

turbohead · Postby **turbohead** » June 3rd, 2008, 10:57 am

use a lil electrical spray an clean out the maf...

cinco · Postby **cinco** » June 3rd, 2008, 5:50 pm

the coil packs have wires running to them change them and the coil packs

^^!SPAWN!^^ · Postby **^^!SPAWN!^^** » June 3rd, 2008, 7:33 pm

Dragsta wrote:u try cleaning trottle body??

Yeah Anil did all that when I carried the car to service by him , someone told me the plugs needs gapping , not sure about it yet ...

Postby **Hook** » June 3rd, 2008, 7:48 pm

lol...dude, you'll be taking advice and giggin up in that car till kingdom come before u scan it once and figure it out :lol:

^^!SPAWN!^^ · Postby **^^!SPAWN!^^** » June 3rd, 2008, 8:47 pm

True , but I don't know where to go and how much it costs .

^^!SPAWN!^^ · Postby **^^!SPAWN!^^** » June 25th, 2008, 3:26 pm

UPDATE
A diagnostic scan was done last Saturday and it came to the conclusion that the Air Flow Sensor is failing , major problem is i'm having trouble locating one . By the way after parking up I took out the sensor to check how many pins it have and it was extremely hot ! Is it suppose to be like that ?

Postby **Hook** » June 25th, 2008, 4:25 pm

u took it out after running the engine?

if so, then yes...everything under the hood gets hot when the engine is on

^^!SPAWN!^^ · Postby **^^!SPAWN!^^** » June 25th, 2008, 5:07 pm

Yes i took it out after running the engine , if I have a cold air intake shouldn't it be cool there instead of hot ?

Postby **Hook** » June 25th, 2008, 6:46 pm

lol...noooooooooooooooooooo :lol:

everything gets hot when the engine is on, meng!

there was a 2nr who had a similar problem recently (an Almera methinx) and it turned out a broken wire in the MAF sensor harness was the cause...a lil soldering work cleared it right up...can't remember how he arrived at that tho

see if u can find the thread..maybe your solution is as simple as his :idea: