Anytime my car is in idle .. it hovers around 750rpm and every few seconds it stutters down to 700rpm kind of like it is about to die, then jumps back up to 750rpm. It is kind of subtle but irritating. Is this normal for our cars? Like the computer might be trying to use as little fuel as possible during idle? And another question ... there is sooty deposit already forming around the bottom/outside of my exhaust .... is it running too rich? It is just approaching the 600 mile mark.
'rough' idle
- Thread starter yinzen
- Start date
MikeBlueP5
Member
- :
- 2K2 Protege 5 (Sold) now 08 UrbanRunner
my exhaust is the same and from what I understand, our cars run rich and this is normal.
mike
mike
TSB MT0000144
Well I have never been able to remedy the rough idle. First oil change seemed to help. Sparkco wires made no difference. I had noticed a 'resistance' feeling during hard accelerations at certain points in the rpms, but thought this was just the weak engine. It will also randomly drop RPMs drastically, when stopped and idling, and almost stall, then recover to the rough idle. But then I found this TSB that sounds like it really could be the cause of my problems:
I am going to take it to the dealer, I will give feedback as soon as I know more.
Well I have never been able to remedy the rough idle. First oil change seemed to help. Sparkco wires made no difference. I had noticed a 'resistance' feeling during hard accelerations at certain points in the rpms, but thought this was just the weak engine. It will also randomly drop RPMs drastically, when stopped and idling, and almost stall, then recover to the rough idle. But then I found this TSB that sounds like it really could be the cause of my problems:
I am going to take it to the dealer, I will give feedback as soon as I know more.
..Update..
Well I got to the dealer at about 3pm, and left at about 530pm. I told them about the symptoms showed them a printout of the TSB. I also told them about the cold start rattle (which I had just started experiencing) and showed them that TSB printout. I figure while I was there might as well get the computer's programming upgraded. Well they say they couldn't find anything causing the rough idle and couldnt reproduce the problem with acceleration. Big surprise, but I asked them if they actually looked at and tested the injectors, they assured me they did. I am a bit skeptical. I am going to look over the Service Manual for what is involved in testing the injectors, and see if I can find evidence that they were 'in there'. But they did do the reprogram for the cold rattle TSB; 1 out 2, at least. It seems to feel a little different, but could just be my imagination.
Well I got to the dealer at about 3pm, and left at about 530pm. I told them about the symptoms showed them a printout of the TSB. I also told them about the cold start rattle (which I had just started experiencing) and showed them that TSB printout. I figure while I was there might as well get the computer's programming upgraded. Well they say they couldn't find anything causing the rough idle and couldnt reproduce the problem with acceleration. Big surprise, but I asked them if they actually looked at and tested the injectors, they assured me they did. I am a bit skeptical. I am going to look over the Service Manual for what is involved in testing the injectors, and see if I can find evidence that they were 'in there'. But they did do the reprogram for the cold rattle TSB; 1 out 2, at least. It seems to feel a little different, but could just be my imagination.
Smilin Marty
Member
I havn't really noticed it too much in my car. Probably because my last car (98 protege DX) was so much worse. I took that one in and they told me it was normal. At that time I really didn't care much so I didn't argue the point, but now I do. If it starts to get really bad like my 98 I just may have to take her in. That sux!!
twilightprotege
Member
- :
- 2001 323 Astina SP20 (P5)
hey
just for reference i have a rough idle every now and then only when the engine is hot. has only happened after i put the injen air intake on. but has got better since i put the denso plugs and magnecor wires on
later
just for reference i have a rough idle every now and then only when the engine is hot. has only happened after i put the injen air intake on. but has got better since i put the denso plugs and magnecor wires on
later
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- 2002 BJFW, 2007 BK3P, 1979 SA22C, 2005 BK3P
i had it when i first installed the turbo, but once i rigged up FM's ECU signal switch it pretty much cured it. When I test drove the MSP I noticed this problem as well.
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- 92 & 16 Meyatas
how you guys making out with the rough idle? i had no problems with my car until i "jumped" my wifes dead battery the other day. right afterward i'm stoped at a red light and it feels likes it's gonna die....idle drops...back up. i reset the ecu, seemed better then it's back again? i've got 40k miles on the car. any help would be appreciated. mark
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- 02 1500 4x4, mp3
when my car was NA i had the same problem that was caused by a clamp not beigned tight enough, was fine at first but then started to act up until i tighten clamps....dunno i yall checked that already if a intake is present.....
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- 92 & 16 Meyatas
thanks, i did replace some hoses last week, but drove all week with no problem...i'll check though.
