rough idle and runs rough
#1
rough idle and runs rough
This just started happening on Thursday or Friday. My 95 started idling a little rough. I thought it was probably just the IAC that needs to be cleaned. Not as bad after the car warmed up.
Now it's missing a bit (especially under 2K RPM).
No CEL. I haven't checked for ghost codes yet.
What could it be?
Now it's missing a bit (especially under 2K RPM).
No CEL. I haven't checked for ghost codes yet.
What could it be?
#7
i ran some techron fuel injector cleaner through it 2 months ago. there were no problems i did it for good measure. I changed the fuel filter about a year ago. spark plugs are probably getting close to 30k miles on them.
from what i researched it looks like it could be maf, coil packs, or tps.
is the CRC maf cleaner easy to come by?
from what i researched it looks like it could be maf, coil packs, or tps.
is the CRC maf cleaner easy to come by?
#12
I just bought my 95 maxima and it idles really rough, I have to hold the gas at red lights, cruise control set at 80 fluctuates to 70 and back up, now it won't start, its really cold here but it doesn't "vroom" just tries...any suggestions?
#13
i cleaned the maf and it didn't seem any better. so i did the coil pack test. when tested 1 and 2 on the front of the car the idle changed when i unplugged them. number 3 didn't change anything. i pulled the spark plug on that one and the plug was shot. the electrode was loose and the metal on the other end fell out of the porcelain.
#15
i might flamed for being a newbie but i got the same problem. 1999 max se. runs fine on cold start up, when it starts to warm up it idles kinda rough. and when im driving at speed and the rpms are in between 1300 and 2000 it shakes real bad.
misfire. been told that it could be both the coils or the plugs. i dont know. so maybe its just my plugs to
misfire. been told that it could be both the coils or the plugs. i dont know. so maybe its just my plugs to
#16
i might flamed for being a newbie but i got the same problem. 1999 max se. runs fine on cold start up, when it starts to warm up it idles kinda rough. and when im driving at speed and the rpms are in between 1300 and 2000 it shakes real bad.
misfire. been told that it could be both the coils or the plugs. i dont know. so maybe its just my plugs to
misfire. been told that it could be both the coils or the plugs. i dont know. so maybe its just my plugs to
#17
#18
my car wont even squeal the wheels when i floor it from a stop. and it sounds like its bogging out. and the CEL likes to flash at me when im driving. just got the car too. not a good first impression on the max's part
Last edited by Pyromaniac1050; 02-14-2008 at 05:43 PM.
#20
im preety sure thats what it is too. i did the coil check thing today, where you unplug each coil one by one and see if the idle changes. i got the front 3 and the back 1 on the passenger side, (they all changed the idle BTW) but i cant get the other 2 in the middle and on the drivers side. no leverage. any suggestions?
#21
Needle nose pliers to depress the lock on the plug worked for me.
Mine is weird, I removed the coil from the rear closest to the fender and that was my bad cylinder, changed the coil and still no change in the way it idles. Changed plugs as well and still nothing has changed. When I'm at idle, it seems like it is running bad (the miss is very pronounced when at a stop light), however after I get the RPM's up, it seems to smooth out. Around town driving, she bogs down, however at highway speeds everything seems fine. When I get enough posts, I'm going to start a thread on some little gremlins I have with my Max.
Mine is weird, I removed the coil from the rear closest to the fender and that was my bad cylinder, changed the coil and still no change in the way it idles. Changed plugs as well and still nothing has changed. When I'm at idle, it seems like it is running bad (the miss is very pronounced when at a stop light), however after I get the RPM's up, it seems to smooth out. Around town driving, she bogs down, however at highway speeds everything seems fine. When I get enough posts, I'm going to start a thread on some little gremlins I have with my Max.
#22
i just had my engine washed at a detailer. after that i'm experiencing rough idling. i checked the front valve cover to check if it got wet but its not. plugs are a few months old. haven't checked the rear plugs.
looking back, i remember my old plugs were all rusted. it seems like the vq doesn't want an engine wash.
could it be that my plugs are fouled again? can i just clean them?
looking back, i remember my old plugs were all rusted. it seems like the vq doesn't want an engine wash.
could it be that my plugs are fouled again? can i just clean them?
#23
i had same issue just this week. one of my cylinders wasnt firing and had to replace fuel injector. fortunately it wasn't filling with gas. but yeah, higher rpms it would smooth out, but around below 2 or 3 it would have this chugging sound. and starter went up 2 days later. sucked for me.
Last edited by werwt22; 09-30-2008 at 11:04 AM.
#24
I learned this during my research of my SES lights. If its steady on, then you have an emission problem. If it starts flashing that signifies misfire.
I also have a rough idle, that kinda comes and goes. I had one coil replaced for being bad a while ago, read that it is recommended to do them in pairs. Can someone post a link to testing them? THX.
I also have a rough idle, that kinda comes and goes. I had one coil replaced for being bad a while ago, read that it is recommended to do them in pairs. Can someone post a link to testing them? THX.
#26
yes, take the time to read more. I have very little posts here because every time I have a problem I do a good search and I get the answer from an existing thread.
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