Gallass's Posts

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Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 7:31pm On Aug 18, 2020

GAZZUZZ:
Possible vacuum leak. Start from scratch, check intake, injector seals and every channel that uses the vacuum lines.

okay.
My evaporative cannister box at the rear quarter panel is broken though. I do not know (I don't think anyway) if it can be a possible cause because it was broken when it was shipped from the US and it ran fine then

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 6:54pm On Aug 18, 2020

GAZZUZZ:
Any work done prior to this?

Absolutely none.
MAF was changed last year.
It has been okay all these while.
Just started erratic idle in January. Have changed throttle body thrice... all to no avail.

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 6:32pm On Aug 18, 2020

GAZZUZZ:
More information required.
Repair history also required. What did you fix last?

I changed my throttle body last week due to the same issue. Idle RPM was unstable that necessitated the changed. Prior to the throttle body change, MPG was okay. No black smoke.

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 6:04pm On Aug 18, 2020

Gazzuzz and other heroes in this forum.... I greet o.

I need you guy's opinion on this issue.
2001 QX4
3.5L VQ35

Fuel consumption increased significantly since last week. Black exhaust smoke at start up (both warm and cold start).
car idles erratically but drives perfectly in motion.
This minute it's normal, the next second, the RPM will drop as low as 300 and goes back to 750 after like 3-5 seconds and the cycle continues.
Car drives very fine but idles poorly and erratically (up and down) especially in traffic.
Spark plug inspection showed black smoke on plug 1.
Car was scanned. I didn't quite note down the DTC but the interpretation is Oxygen sensor Sensor 2 bank 1.

Live data brought up the following (pic attached)
Auto elect said I should come for change of oxygen sensor tomorrow.
I will appreciate your inputs before I go ahead and spend

Car Talk › Re: Nissan Quest 1995 Not Selecting Gears by Gallass(m): 9:08am On Aug 15, 2020

gScales:
Automatic!

WhatsApp 0.7.0.65.4.6.5.7.8.5

Car Talk › Re: Nissan Quest 1995 Not Selecting Gears by Gallass(m): 5:16pm On Aug 14, 2020

Automatic or manual?

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 9:09pm On Jun 03, 2020

Costee:
Often enough a bad IACV tends to damage the ECM. It's good you presumably have a better one now, but the previous one may have caused some damage to the ECM, and if so the new IAVC will, in turn, be damaged by the ECM. I'd advise you check the ECM for damage (burnt chips). If all is well you may then proceed with an idle air relearn, which will establish a proper connection between the new IACV and the ECM.

Ic17 responsible for the control of the idle isn't burnt. The entire ECU looks intact (by eye judgement). I sniffed it..... No burnt smell detected. Although I read in one Pathfinder group that an ECU can look perfect and yet fried.

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 7:31pm On May 31, 2020

Costee:
Often enough a bad IACV tends to damage the ECM. It's good you presumably have a better one now, but the previous one may have caused some damage to the ECM, and if so the new IAVC will, in turn, be damaged by the ECM. I'd advise you check the ECM for damage (burnt chips). If all is well you may then proceed with an idle air relearn, which will establish a proper connection between the new IACV and the ECM.

This has been my primary suspicion... IACV chip in the ECM. I will have a look boss. I have already tried doing the idle relearn

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 10:05pm On May 30, 2020

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 10:03pm On May 30, 2020

Gazzuzz

Infiniti QX4 2002.
I had idling issues. Idle bounces up and down.
car was scanned and I was getting P0505.... IACV ish. I bought a another throttle body since they actually come together. It didn't solve my issues. The erratic idle happens whenever it likes and becomes so annoying, car stalls at traffic and rpm rises to 1,500 when restarted. Mechanic told me that the IACV in the throttle body I bought is also faulty like the one I had. He tweaked the throttle body through the hole that comes from the IACV solenoid and blocked it with a paper. (picture attached). Then opened it a little bit to allow small air to pass. My problem was solved. No more erratic idles....but there was another problem.

He set the idle at 1,000rpm in Park/Neutral.
When I engage reverse or D, it comes down to 700. But where I had a problem with that arrangement is that when I put on the AC, car idles at 500 and sometimes go as low as 400-450 and feels like it's about to die. when you put off the AC, the rpm goes to 700 and you are good to go wherever you wanna go. Car drives just fine.

I saved money, went to Onitsha myself, went to my trusted engine seller and he yanked off a throttle body from a VQ35 engine and I went and installed it in my vehicle.
Start up was fine. idled within range (750rpm) but when I put on the AC, I still get the same issue that I had with the first one.

Please help

Car Talk › Re: Official Nissan & Infiniti Thread by Gallass(m): 10:33pm On Mar 23, 2020

Costee:
There is no P0100. Perhaps typo error for P0101 which is for the MAF sensor. P0505 is for Idle Air Control Valve (IACV). What are your symptoms?

Loss of power (dangling rpm)
Sometimes, car is unable to rev at idle. Next minute, it will rev. So it misbehaves and jerks

Car Talk › Re: Official Nissan & Infiniti Thread by Gallass(m): 9:30pm On Mar 23, 2020

Costee:
What code(s) precisely?

p0100 p0505

Car Talk › Re: Official Nissan & Infiniti Thread by Gallass(m): 3:51pm On Mar 23, 2020

I am having issues with my air flow meter. I have scanned it repeatedly and it keeps showing air flow meter. 2002 Infiniti QX4. I have bought three different ones all to no avail. Please I need help

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 7:30am On Mar 23, 2020

Besto:
Your case fit be ecu sef.

changed ECU. same thing. Had to put back my old ECU

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 10:17pm On Mar 22, 2020

Allem:
you car problem is with the throttle mouth or injector head, the iac sensor is blocked or bad, either you change it or service it.

I bought another one and checked the entire throttle body (injector mouth), no difference

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 6:12pm On Mar 22, 2020

radautoworks:
It's not in stock and will take 7-10 days maybe now with all this upheaval http://weblink.carquest.com/acl/?mfgName=MAF&partNumber=MA205 N72,945 with a 2 year warranty at current exchange rate

I don't think that's your problem though... What's the exact code you are getting and is it the only one? Include exact code description as given by scanner too.

P0100 Mass or Air volume circuit (permanent)
P0505 Idle Air control system (intermittent)

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 6:05pm On Mar 22, 2020

Gallass:
Reasons why I believe it's my exact problem:
DTC code reoccurring. At idle, if you erase codes and put off the engine. Start it again and check engine pops up. I will scan it again and will get MASS Air flow code immediately. Changing different MAFs gives different performances. The malfunction is even inconsistent. start the vehicle this minute and it will rev fine. Off the engine and start it immediately again and it won't rev fine.

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 6:04pm On Mar 22, 2020

radautoworks:
It's not in stock and will take 7-10 days maybe now with all this upheaval http://weblink.carquest.com/acl/?mfgName=MAF&partNumber=MA205 N72,945 with a 2 year warranty at current exchange rate

I don't think that's your problem though... What's the exact code you are getting and is it the only one? Include exact code description as given by scanner too.

Reasons why I believe it's my exact problem:
DTC code reoccurring. At idle, if you erase codes and put off the engine. Start it again and check engine pops up. I will scan it again and will get MASS Air flow code immediately. Changing different MAFs gives different performances. The malfunction is even inconsistent. start the vehicle this minute and it will rev fine. Off the engine and start it immediately again and it won't rev fine.

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 4:28pm On Mar 22, 2020

my 2002 QX4 is having MAF issues. This was confirmed by OBD II scans. Codes erased and it keeps popping up. Bought a brand new MAF (not OEM ), it didn't make any difference. Tried different used MAFs from the parts market here in Enugu, they were all misbehaving.
Is there any Nissan expert that is based in Enugu in this forum?
Radautoworks , for how much can I get an OEM MAF sensor from you?

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 10:48am On Mar 08, 2020

2001 QX4. Jerks at first gear only. It doesn't happen if I accelerate hard but surely happens if I drive normally. Immediately it enters second gear, rpm sharply rises to 2,500 and quickly returns to normal. Car will continue to drive okay until the next braking when it will return to first gear.
NB: If I accelerate hard and push down the gas on all gears, they work perfectly

Car Talk › Re: Oil Pump Needed by Gallass(op): 10:56am On Apr 30, 2019

Car Talk › Oil Pump Needed by Gallass(op): 10:55am On Apr 30, 2019

I need this oil pump. is there any dealer here who has it?
Engine: Nissan VG30 car: Infiniti J30

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 7:37am On Apr 11, 2019

radautoworks:
Year?

1997

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 7:50am On Apr 10, 2019

Gallass:
I need engine crankshaft pulley for Nissan VG30 engine.
Can anyone help?

Please can anyone here help me with this?
Car is Infiniti J30.

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 5:56am On Apr 09, 2019

I need engine crankshaft pulley for Nissan VG30 engine. Can anyone help?

Car Talk › Nissan VG30 Pulley Needed by Gallass(op): 5:52am On Apr 09, 2019

Does any dealer here have the crankshaft pulley ("engine pulley") of Nissan VG30 engine.
It is needed asap.

I need it for my car Infiniti J30
Thanks

Car Talk › Re: Price Forrespray Of My Car by Gallass(m): 9:10am On Mar 02, 2019

how did you go about tinting your car? I am also in Enugu and I'm interested in tinting mine

Autos › Re: Brainbox (ECU), Key Chips, Immobiliser,bcm, Remote, Transponder.. 08120306356 by Gallass(m): 10:03am On Dec 09, 2018

Do you have for 1997 infiniti J30 ?

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 9:12pm On Nov 13, 2018

GAZZUZZ:
can you breathe properly while covering your nostrils? The assy constitutes the strainer and filter. They get bad after a fey years of use in nigeria.

Okay. Thank you

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 8:28pm On Nov 13, 2018

@gazzuzz
what's the reason why it is encouraged to change the complete assembly instead of only the pump during fuel pump replacement?

1 Like

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 8:27pm On Nov 13, 2018

GAZZUZZ:
remote diagnosis not possible.

Thank you

Car Talk › Re: Maintenance Tips On Cars. by Gallass(m): 11:05pm On Nov 10, 2018

GAZZUZZ:
Fuel pressure yes, faulty coils cannot be ruled out.

okay.
I've changed fuel pump 3 times because of it.
No difference.
my bewilderment is hinged on it happening ONLY when engine warms up properly.
In most instances, when it starts that rubbish, hard acceralation solves it immediately. But expect it in the next 2-3 mins of driving to jerk again. When engine runs rough in motion , offing and restarting the engine solves the problem in most instances.
The misbehavior is incostistent.

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