Cellar car issue - Page 4

jimhelm · 02-07-2011, 07:05 PM

Wow. you're getting quite handy, thar.

Undertoad · 02-07-2011, 07:33 PM

Thank you sir. I do know the electrical bits.

HungLikeJesus · 02-07-2011, 08:11 PM

UT, you really only need three cylinders - the others are redundant, just like the extra engines on an airplane.

Undertoad · 02-08-2011, 11:02 AM

Hmmmm eBay has used parts, tested as good, for half the price... what do...

BigV · 02-08-2011, 01:01 PM

at the risk of channelling tw, you need know what's broke before you try to fix it by throwing parts at it. if you're getting multi cyl misfire, and you only have two cyls testing bad... how do you know that's the whole multi group? right, you don't. it is *definitely* OK to solve a problem like this in an iterative fashion, fix what you can see wrong in front of you, test again, fix what shows up next. That's a perfectly fine strategy.

I don't know--do you--what the possible repair/replace solution options are for a fuel injector that tests this way? What about cleaning it? Like I said, *I* don't know in this case. As for misfires, there are a hundred and one ways for a cylinder to misfire. fuel/air/fire.. it is a mystical trinity.

What to do, is still a good question. I'd focus on what it would take to get the electrical readings of those injectors you can reach back into the good range. replace or repair and then go from there.

Gravdigr · 02-13-2011, 12:26 PM

Someone posted earlier about fuel, spark, air etc. Nowadays what with 769 sensors, computers all over the car, about all a regular Joe can do anymore is throw parts at 'em. Start with the cheapest, most pertinent-est ones.

plthijinx · 02-14-2011, 04:41 PM

definitely go to the auto parts store and get the code readings. being too lazy to research, what is the year make and model of the cellar car? a good friend, the same one that helped me swap transmissions, is very good at diagnosis and advice. when i get the Y/M&M i will consult him as well. if it is the injectors i recommend changing them all with new ones. another thing it may be is a bad cam position sensor if you have one on there. the Fixed Or Repaired Daily had that problem and would miss going down the freeway under stress (ie going uphill) but always cranked right up so maybe it'snot that. but worth a look see.

Undertoad · 02-14-2011, 04:47 PM

I got the code dude. Cylinder 4 misfire. But I can't afford to even replace the single injector that I think is bad.

This is a 1995 Maxima with a VQ30DE engine which is also found in Maximas through 2001 and Infiniti I30s from 1996-2001.

plthijinx · 02-14-2011, 05:55 PM

you did, didn't you. was speed reading and posting.

plthijinx · 02-14-2011, 06:04 PM

ok. RC recommends running prestone fuel injection cleaner through the engine even though you already ran STP through it. then let the car run for about an hour or drive it for that long before replacing the injectors. if it does come to it you can replace them with used ones. i'm on the phone with him now discussing this. lmao he just said you can go to pick a part and put them in your pocket and not pay for em. lol you have to know RC, he's got a heart of gold but will save money where he can. but do this in seriousness, take an old injector with you to make sure you get the correct ones. hope this helps.

Undertoad · 02-27-2011, 05:07 PM

It took forever for the eBay'd replacement injectors to arrive, but today I replaced the one saying it was bad.

Result

No more codes thrown as yet. Engine runs damn smooth. I've saved $300 by figuring this shit out off the Interwebs.

Griff · 02-27-2011, 05:09 PM

sweetness

zippyt · 02-27-2011, 05:33 PM

good Job !!!

Now run some injector cleaner thru it

Undertoad · 04-15-2011, 12:51 PM

might as well continue the thread

$800 in brake work needed to pass inspection

I'm doing it, but this is a tough one.

zippyt · 04-15-2011, 01:02 PM

You can Do it UT !!!!

Just rember to Chock ( Or scotch , or put a block of wood) behind the wheels

02-07-2011, 07:05 PM	#46
jimhelm a beautiful fool Join Date: Sep 2010 Location: 39.939705 Posts: 4,504	Wow. you're getting quite handy, thar. __________________ There's a Shadow just behind me. Shrouding every step I take. Making every promise empty, pointing every finger at me. _tool

02-07-2011, 08:11 PM	#48
HungLikeJesus Only looks like a disaster tourist Join Date: Feb 2007 Location: above 7,000 feet Posts: 7,208	UT, you really only need three cylinders - the others are redundant, just like the extra engines on an airplane. __________________ Keep Your Bodies Off My Lawn SteveDallas's Random Thread Picker.

02-08-2011, 01:01 PM	#50
BigV Goon Squad Leader Join Date: Nov 2004 Location: Seattle Posts: 27,063	at the risk of channelling tw, you need know what's broke before you try to fix it by throwing parts at it. if you're getting multi cyl misfire, and you only have two cyls testing bad... how do you know that's the whole multi group? right, you don't. it is definitely OK to solve a problem like this in an iterative fashion, fix what you can see wrong in front of you, test again, fix what shows up next. That's a perfectly fine strategy. I don't know--do you--what the possible repair/replace solution options are for a fuel injector that tests this way? What about cleaning it? Like I said, I don't know in this case. As for misfires, there are a hundred and one ways for a cylinder to misfire. fuel/air/fire.. it is a mystical trinity. What to do, is still a good question. I'd focus on what it would take to get the electrical readings of those injectors you can reach back into the good range. replace or repair and then go from there. __________________ Be Just and Fear Not.

02-13-2011, 12:26 PM	#51
Gravdigr The Un-Tuckian Join Date: Apr 2007 Location: South Central...KY that is Posts: 39,517	Someone posted earlier about fuel, spark, air etc. Nowadays what with 769 sensors, computers all over the car, about all a regular Joe can do anymore is throw parts at 'em. Start with the cheapest, most pertinent-est ones. __________________ These statements have not been evaluated by the FDA, EPA, FBI, DEA, CDC, or FDIC. These statements are not intended to diagnose, cause, treat, cure, or prevent any disease. If you feel you have been harmed/offended by, or, disagree with any of the above statements or images, please feel free to fuck right off.

02-14-2011, 04:41 PM	#52
plthijinx Master Dwellar Join Date: Aug 2003 Posts: 4,197	definitely go to the auto parts store and get the code readings. being too lazy to research, what is the year make and model of the cellar car? a good friend, the same one that helped me swap transmissions, is very good at diagnosis and advice. when i get the Y/M&M i will consult him as well. if it is the injectors i recommend changing them all with new ones. another thing it may be is a bad cam position sensor if you have one on there. the Fixed Or Repaired Daily had that problem and would miss going down the freeway under stress (ie going uphill) but always cranked right up so maybe it'snot that. but worth a look see. __________________ For your dreams to come true, you must first have a dream.

02-07-2011, 07:33 PM	#47
Undertoad Radical Centrist Join Date: Jan 2001 Location: Cottage of Prussia Posts: 31,423	Thank you sir. I do know the electrical bits.

02-08-2011, 11:02 AM	#49
Undertoad Radical Centrist Join Date: Jan 2001 Location: Cottage of Prussia Posts: 31,423	Hmmmm eBay has used parts, tested as good, for half the price... what do...

02-14-2011, 04:47 PM	#53
Undertoad Radical Centrist Join Date: Jan 2001 Location: Cottage of Prussia Posts: 31,423	I got the code dude. Cylinder 4 misfire. But I can't afford to even replace the single injector that I think is bad. This is a 1995 Maxima with a VQ30DE engine which is also found in Maximas through 2001 and Infiniti I30s from 1996-2001.

02-14-2011, 05:55 PM	#54
plthijinx Master Dwellar Join Date: Aug 2003 Posts: 4,197	you did, didn't you. was speed reading and posting. __________________ For your dreams to come true, you must first have a dream.

02-14-2011, 06:04 PM	#55
plthijinx Master Dwellar Join Date: Aug 2003 Posts: 4,197	ok. RC recommends running prestone fuel injection cleaner through the engine even though you already ran STP through it. then let the car run for about an hour or drive it for that long before replacing the injectors. if it does come to it you can replace them with used ones. i'm on the phone with him now discussing this. lmao he just said you can go to pick a part and put them in your pocket and not pay for em. lol you have to know RC, he's got a heart of gold but will save money where he can. but do this in seriousness, take an old injector with you to make sure you get the correct ones. hope this helps. __________________ For your dreams to come true, you must first have a dream.

02-27-2011, 05:07 PM	#56
Undertoad Radical Centrist Join Date: Jan 2001 Location: Cottage of Prussia Posts: 31,423	It took forever for the eBay'd replacement injectors to arrive, but today I replaced the one saying it was bad. Result No more codes thrown as yet. Engine runs damn smooth. I've saved $300 by figuring this shit out off the Interwebs.

02-27-2011, 05:09 PM	#57
Griff still says videotape Join Date: Feb 2001 Posts: 26,813	sweetness __________________ If you would only recognize that life is hard, things would be so much easier for you. - Louis D. Brandeis

02-27-2011, 05:33 PM	#58
zippyt LONG LIVE KING ZIPPY! per Feetz Join Date: Mar 2003 Location: Arkansas Posts: 7,661	good Job !!! Now run some injector cleaner thru it __________________ "Success is getting what you want. Happiness is wanting what you get. " Brother Dave Gardner

04-15-2011, 12:51 PM	#59
Undertoad Radical Centrist Join Date: Jan 2001 Location: Cottage of Prussia Posts: 31,423	might as well continue the thread $800 in brake work needed to pass inspection I'm doing it, but this is a tough one.

04-15-2011, 01:02 PM	#60
zippyt LONG LIVE KING ZIPPY! per Feetz Join Date: Mar 2003 Location: Arkansas Posts: 7,661	You can Do it UT !!!! Just rember to Chock ( Or scotch , or put a block of wood) behind the wheels __________________ "Success is getting what you want. Happiness is wanting what you get. " Brother Dave Gardner

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