WTF?? My Q Only runs good on BG44k

Post by **Q_SHIP** » Wed May 25, 2005 4:53 am

I dont get it. I have run BG enough times now to know it's not in just in my head. My car surges, hesitates when I have premium in the car. I add the BG44K, it runs brand new. As soon as I add fresh gas after a tank of BG44K, The problems come back. Is my car addicted to drugs? Im lost on this one and very frustrated. Any ideas? Keep in mind it is the 99 Q45.

Post by **maxnix** » Wed May 25, 2005 6:35 am

Try any IsoHeet? Maybe contaminated gasoline.

Try a newer national brand station when you refill.

Post by **Q_SHIP** » Wed May 25, 2005 7:02 am

I have never been dedicated to one gas station. I stop at what ever one is near me.

Post by **gniknave** » Wed May 25, 2005 7:14 am

Q_SHIP wrote:I have never been dedicated to one gas station. I stop at what ever one is near me.

Maybe that's the problem. I found my Q [rAn] best on Chevron premium. Once I realized that, I never put anything else in it.

Post by **DominickJ30** » Wed May 25, 2005 7:59 am

maxnix wrote:Try any IsoHeet?

Are you recommending this?

Post by **szh** » Wed May 25, 2005 8:39 am

DominickJ30 wrote:Are you recommending this?

I would recommend IsoHeet. It cleans up any potential water problems in the gas.

Be careful to use "Iso"Heet, not the other one (whose similar name I forget) that has methanol and/or ethanol, rather than isopropyl alcohol, and will harm your car.

Z

Post by **DAEDALUS** » Wed May 25, 2005 9:00 am

I think the other one is simply called Heet.

Post by **EQwhipD** » Wed May 25, 2005 10:57 am

I only run Shell V-Power 93 Octane in my Q. If I use any other brand, the car doesn't perform as well, and the gas mileage sucks! whatever is in it seems to work well. I also put in Amsoil fuel additive once a month, which also seems to keep everything running smoothly! My brother puts Redline Fuel Additive in his Acura, and that seems to work well also. -EQwhipD

Post by **CJQ45** » Wed May 25, 2005 11:42 am

I'v done a lot of research on gas... I even have the gas stations ranked. Depending on where you live - will determine the quailty of gas. The shi*est gas you can probably put in your car is with 10% ethanol. The ethanol is added as a fuel perservative. Personally, I think the EPA is eating profits off the gas compaines. Not only does it totally F*** the car - bad injectors - bad fuel pump you name it - but it also lowers the fuel effiency by at LEAST 13-17% - thats a lot of wasted gas!!! This silent tax on gas is what most consumers dont know about.

Anyway - I know NJ still uses 3% MTBE which makes the car run a LOT LOT better and smoother and you get about 15-20% better fuel efficancy

But as far as quailty of gas is concerned the best are as follows from my experience:

#1 BP / Amoco#2 Shell V-Power#3 Sunono 93 (94 octane that they have is by far the very best but $$$)

The shi%est gas you can put in your car

#1 Gulf#2 Mobile/Exxon

CJ

Post by **szh** » Wed May 25, 2005 3:57 pm

Here in California, I stick to:

#1 Chevron 91#2 Shell V-Power#3 Valero

All others are pathetic.

Z

Post by **szh** » Wed May 25, 2005 3:57 pm

DAEDALUS wrote:I think the other one is simply called Heet.

You are right!!!

Z

Post by **Q45tech** » Thu May 26, 2005 1:48 am

With premium sales volume less than 17% [varies by location] of the national market, why would refiners forgo a $200-500,000 per day PROFIT just to satisfy an even smaller minority who actually drive a 10.2 or higher compression ratio engine.

The problem is those <5% of vehicles vary in sensitivity to Premium.......as they age they get more sensitive not less as most might assume.

Good enough Premium for 90% [of 10%] leaves a couple of MILLION cars with severe rattling spark knock in warm weather.

One of the cost penalties of V8 driving.........additives or blending your own fuel.

Post by **Q_SHIP** » Thu May 26, 2005 4:50 am

Ok, so the verdict is every gas station sell crap gas in my area? I have a hard time buying that!

Post by **Q451990** » Thu May 26, 2005 4:55 am

13 Replies and you're upset???? Have you been to any other car forums lately? This is the cream of the crop!

I think the verdict is that you either have water in your gas (from some point) and the BG44K may counteract that - or maybe you need to stick to a reputable brand of gas from a new(er) station for several tanks to see if that fixes it.

I would also recommend an injector flush and power balance test. You might be right on the edge performance wise with BG44K and experiening problems without it...

It's kind of hard to diagnose a car from my computer... it's time to pony up some diagnostic $$ if you want definate answers.

Heath

Post by **Q_SHIP** » Thu May 26, 2005 5:09 am

Now you are pointing me in the right direction. Thanks for the reply.

I realize that it's tuff to diagnose from a computer. Im just asking for advice on what to check. I never bring my car to the shop for anything. I have always done my own work.

Anyways, Do you think there could still be moisture in the tank even if I run the car to almost nothing before fill ups? Also, the car runs fine for about a half tank after the BG treatment.

Post by **FarFetched** » Thu May 26, 2005 6:34 am

Does you 99Q45 "stumbles" in D or R at a stop light with brakes applied? I can describe it not as missfire, rather an occasional quiver.I can't figure it out. Mine does it on occasion. Cheeres!

Post by **Falkdesigns** » Thu May 26, 2005 6:53 am

My Q doesn't run differently with different gas, but I use Chevron 91 98% of the time. Occasionally Mobil or Shell, and I don't feel any difference. I also use Redline fuel system cleaner about once a month.

Post by **Q_SHIP** » Thu May 26, 2005 6:59 am

FarFetched wrote:Does you 99Q45 "stumbles" in D or R at a stop light with brakes applied? I can describe it not as missfire, rather an occasional quiver.I can't figure it out. Mine does it on occasion. Cheeres!

No, not really but the car is a pooch. I almost have to mash on it to make the car move.

Post by **squeefoo** » Thu May 26, 2005 7:22 am

Since you have OBDSII -are there any codes?Drive out to Oconomowoc and put in some real gas ie W/O ethanol.

Does the gen. II Q have the EGR clogging issues as well?

Post by **Q_SHIP** » Thu May 26, 2005 7:45 am

Im not throwing a check engine light yet but I can't believe it's not. The EGR might be good to check.

Post by **FarFetched** » Thu May 26, 2005 9:03 am

Q_SHIP wrote:Im not throwing a check engine light yet but I can't believe it's not. The EGR might be good to check.

MIL will be on if it is emiss related mulfunction, otherwise MIL might not be on. I got no MIL no DTC's nothing, just occasional "stumble" at rest with brakes on and in R or D mode.

Post by **CJQ45** » Thu May 26, 2005 11:51 am

Can someone PLEASE PLEASE answer this question

Does you 99Q45 "stumbles" in D or R at a stop light with brakes applied? I can describe it not as missfire, rather an occasional quiver.I can't figure it out. Mine does it on occasion. Cheeres!

I have the exact - EXACT -same problem.. 97Q 76k... I dont think this is realted to fuel or fuel delivery.... This to my best knowledge is realted to the transmission filter. There have been people who have reported this exact problem - and its very very common in the FY33 line.... and there are no codes when scanned by a generic scanner.

If anyone has figured this out - PLEASE post it Pronto!!!

Post by **texasoil** » Thu May 26, 2005 2:09 pm

You might be totally correct is assuming 'every statios sells cra---'. In your location, they all may be getting their gasoline from the refinery in Superior. The 'brand' on the stations does not mean the gasoline was manufactured by that company.

Post by **CJQ45** » Thu May 26, 2005 2:53 pm

Ok this thing is offically pis*ing me off!!!! A lot of people have this problem from this board and other infiniti (yahoo group) boards - no one has the solution.

Let me summarize to help find a cause:

1. I changed my plugs2. I replaced tranny fluid (drain and refill)3. Replaced brake fluid4. Changed the oil5. Replaced the fuel filter6. Cleaned the throttle body - full disassembly - not just spraying the butterfly valve

7. Cleaned the MAF8. Changed the air filter

After doing this - the car started the stumbling (very quick hesitation) a little more than usual at stop signs and red lights.

FarFetched.. did you do the tranny drop and filter change - I think this may be realted to a dirty tranny filter. I haven't changed it on my Q.

CJ

Post by **FarFetched** » Thu May 26, 2005 3:00 pm

I didn't replace the engine if you want to know what I did Otherwise I have replaced every possible mulfunctuioning item in my Old Lady!She runs like a cheetah. I have posted a possible answer to our "stumbling" issue.I will agree with GURUS of Q45 world on fuel quality and cleanliness of fuel and air induction!Cheers!

Post by **CJQ45** » Thu May 26, 2005 3:42 pm

Farfetched.... where did you post the answer to the problem?

Sorry for sounding dumb - I wasn't able to find it.

CJ

Post by **Q_SHIP** » Fri May 27, 2005 5:03 am

Ok, so what about my problem?LOL

Post by **96Qowner** » Fri May 27, 2005 6:07 am

Evan had similar symptoms and a pan drop and filter flush mysteriously made it go away.

zerothread?id=102297

Post by **FarFetched** » Fri May 27, 2005 6:21 am

Describe in details when, how, at what speed surging/hesitation occures. I had hesitation at about 40-50 MPH when bogging engine going a slight uphill. When transmission drops into OD mode and just before if upshifts (around 1500-1700RPM). Culprit - Knock Sensors. See my write up on how to do it. Otherwise I can't tell you w/o details. Cheers

Post by **Q_SHIP** » Fri May 27, 2005 7:04 am

Symtoms are

1: same thin in OD as you described

2. surging engine at high RPM's. You can actually feel it tugging the car back.

3. Leaving a light, the car is very slugish and hits a flat spot at about3k RPM'S and falls on it's face. I have to mash on it just to keep up with traffic and get passed that hump.

4. Car runs fine with BG44K and after that tank, thats all she wrote.

New parts.

1. Platinum plugs2. fuel filter3. Maf sensor

Does this help at all? Let me know if you need more info. Thanks.

WTF?? My Q Only runs good on BG44k

WTF?? My Q Only runs good on BG44k

Re: WTF?? My Q Only runs good on BG44k (Q_SHIP)

Re: WTF?? My Q Only runs good on BG44k (maxnix)

Re: WTF?? My Q Only runs good on BG44k (DominickJ30)

Re: (DAEDALUS)

Re: (EQwhipD)

Re: (DAEDALUS)

Re: (szhosain)

Re: (Q_SHIP)

Re: (FarFetched)

Re: (Q_SHIP)

Re: (FarFetched)

Re: (CJQ45)

Re: (CJQ45)

Re: (FarFetched)

Re: (CJQ45)

Re: WTF?? My Q Only runs good on BG44k (Q_SHIP)

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