NEED HELP ASAP!!
03-13-2009, 11:34 PM
#1
NEED HELP WITH STARTING ISSUE ASAP!!
Hey guys my car has been in the shop for almost a month now. I miss it so much. In the beginning i had a starting problem..i changed the starter and my crank shaft sensors..and it was still giving me the same problem. It started backfiring from the muffler and my mechanic is telling me that the injectors are opening up for too long and theyre flooding the engine with gas and thats why its hard for it to start and thats why it backfires. Im going crazy to find out what it might be. I reallly need help because i dont wanna keep changing things. My mechanic broke it down now and he really believes its my computer thats giving off the wrong codes..HELP!!!
Last edited by Hobhob26; 03-14-2009 at 12:25 PM.
03-13-2009, 11:40 PM
#2
If its giving off the wrong codes that still doesnt explain the backfiring. You mechanic may be right. I just finished fixing a 98 I picked up that had the same problem. Replaced the injectors and it started right up, no backfires whatsoever.
03-13-2009, 11:48 PM
#3
Well see we arent sure yet if it is giving off the wrong codes or not. Thats why im not sure if its the injectors or the computer or something else. All i know is that there is alot of gas not being burned!!! You can smell it too when the car starts and thats the reason why it backfires. the injectors open up too much..
03-14-2009, 12:42 AM
#4
That sounds about right. My cylinder 1 injector was stuck open. When I tried starting the car there was a heavy fuel smell, the car backfired, and it shot unburned fuel about 15 feet out the tail pipe. I had a parts car so I just swapped the whole lower intake manifold with fuel rail and injectors over to it and problem solved. I would suggest maybe using a stethoscope of some sort and listening to the injectors. It may help to pinpoint the faulty one.
03-14-2009, 05:41 AM
#5
First of all, ever hear of a descriptive thread title?
http://forums.maxima.org/4th-generat...e-contest.html
Second, what codes?
Third, have you or have you not tested the injectors? Tried them swapping out with another set?
People, please be more descriptive in your subject titles. For example, "cone intake," "red/clears," "suspension," "emblems," are not subject titles...they are isolated words. Describe the main problem/question/comment in the subject line ... please! Don't type one or two words and make the rest of the Org try to guess what you're trying to say.
Second, what codes?
Third, have you or have you not tested the injectors? Tried them swapping out with another set?
03-14-2009, 12:23 PM
#6
First of all, ever hear of a descriptive thread title?
http://forums.maxima.org/4th-generat...e-contest.html
Second, what codes?
Third, have you or have you not tested the injectors? Tried them swapping out with another set?
http://forums.maxima.org/4th-generat...e-contest.html
Second, what codes?
Third, have you or have you not tested the injectors? Tried them swapping out with another set?
im not getting any cel codes. what i was trying to say was that the ecu might be giving the wrong signals, codes, or whatever you call it to the injectors to keep them opened up for longer than they should. because it takes forever to start the car.....
03-16-2009, 04:26 PM
#9
Member
Join Date: Jan 2009
Location: Gwinnett County, GA
Posts: 233
check ur computer
03-16-2009, 04:29 PM
#10
If you suspect an injector problem, then have you tested all of the injectors? Have you pulled the rail and verified that they're flowing too much fuel, or is this all a guess?
Since you also think this could be an ECU problem, have you tried using another ECU, or have you just let the car sit for the past few days without actually doing anything diagnostically?
Since you also think this could be an ECU problem, have you tried using another ECU, or have you just let the car sit for the past few days without actually doing anything diagnostically?
03-16-2009, 06:02 PM
#11
sounds like you need to get more involved in diagnosing the problems of this car.
check the voltage at each injectors, does it flactuate a bit? on/off, on/off ...
did you get a chance to look at the injectors/ swap them up?
any codes stored in ecu?
were you getting any codes prior to starting issue?
what year maxima?
how many miles?
check the voltage at each injectors, does it flactuate a bit? on/off, on/off ...
did you get a chance to look at the injectors/ swap them up?
any codes stored in ecu?
were you getting any codes prior to starting issue?
what year maxima?
how many miles?
03-16-2009, 06:49 PM
#12
yeah, i have a 180,000 miles on my 95 and just about replaced all of what you replaced and then some. 1 ,month sitting in the garage??? more than 2 or 3 days and id have it at another shop getting a second opinion.
03-21-2009, 02:47 AM
#13
i have tested all my injectors and it seems to me that the injectors are all letting out more gas than they should and it doesnt make sense that all 6 of my injectors would go bad at the same time...so something is making them flush more gas in the engine which in the end makes the car backfire.....so heres my problem what could possible make my injectors spray all that extra gas into the engine?????
03-21-2009, 02:50 AM
#14
and i did get a second look at it....as of now its been at the second mechanic for more than 2 weeks....and he is someone i was referred to by friends but my car is obviously stumping him because he has no idea why its doing this...if you leave the car for more than a day without starting it the gas sprayed by the injectors to the engine becomes more and more and it becomes harder for the car to start....and sometimes it doesnt start at all without drying up all that gasoline..
03-27-2009, 07:51 AM
#15
Hey everyone....any help??? After 2 more weeks of my car being in the shop im getting crap from the mechanic saying i need to change the engine even though it starts and runs. What the hell should i do? Hes saying its the timing chain or something of that sort could have jumped a spot....and thats why it could be late in cranking....
03-27-2009, 07:58 AM
#16
Are you sure all of the injectors aren't just leaking into their respective cylinders? A damaged lower o-ring, possibly.
Injectors are cheap enough that I would swap them out to make sure they aren't all just faulty. But as you said, it would be rather odd for them all to fail at once.
Have you tried a new ECU yet? They are also cheap enough to try out, and both the injectors and ECU can easily be sold if they aren't at fault.
Injectors are cheap enough that I would swap them out to make sure they aren't all just faulty. But as you said, it would be rather odd for them all to fail at once.
Have you tried a new ECU yet? They are also cheap enough to try out, and both the injectors and ECU can easily be sold if they aren't at fault.
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