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Message |
Steve B.
Guest
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 Posted:
Sat Nov 20, 2004 5:40 pm Post subject:
2000 I30 Rough Idling at Start |
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My 2000 I30 has 64K miles. A couple of months ago coil #1 was
replaced. Recently, I noticed some rough engine idling in park(engine
is vibrating as if a coil is bad) when I start the car. The rpms would
go down quickly to almost 500 and then back up to the normal level and
then in about 10 seconds the engine idles normally. There are no codes
in the ECM, i.e. no MIL indicator. This doesn't happen every time I
start the car but seems to occur on warm engine starts and again not
evey time.
Now, a couple of days I started the car with engine cold and got rough
idling that wouldn't go away. I also had an unusual smell coming from
the exhaust. After several seconds I got P1320 and P0303 codes so my
mechanic replaced the #3 coil.
I was hoping that my brief rough idling at starts would disappear but
it is still happening. My mechanic tells me that if there are no
codes, it's not the coil. Is he right? What else could that be? If the
MIL is not on, there are definitely no codes in the ECM, right?
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Rog
Guest
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| Posted:
Mon Dec 06, 2004 1:47 pm Post subject:
Re: 2000 I30 Rough Idling at Start |
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Exactly my problem...I have the Maxima in Australia (which is your
I30)...there are no codes...and if your mechanic doesn't diagnose the
problem correctly...then he's probably replaced the WRONG coil.
You must replace the coil with a matching coil...not just another one that
happens to fit. Go for the genuine replacement part...not aftermarket...not
worth the gamble. The only way to test the coils is when the car starts
juddering, start disconnecting the coils one at time by pressing in the
spring-loaded green thingy and pulling in the opposite direction on the plug
(I found a knife blade handy for this...BUT DON'T FORCE IT...once the green
spring is pressed in far enough, then plug slides off nicely).
If the engine gets worse...that coil is good...if it stays the same...you've
found the bodgey coil.
Rog.
"Steve B." <soccerman@mailandnews.com> wrote in message
news:201f8db7.0411200914.45b0a08e@posting.google.com...
| Quote: | My 2000 I30 has 64K miles. A couple of months ago coil #1 was
replaced. Recently, I noticed some rough engine idling in park(engine
is vibrating as if a coil is bad) when I start the car. The rpms would
go down quickly to almost 500 and then back up to the normal level and
then in about 10 seconds the engine idles normally. There are no codes
in the ECM, i.e. no MIL indicator. This doesn't happen every time I
start the car but seems to occur on warm engine starts and again not
evey time.
Now, a couple of days I started the car with engine cold and got rough
idling that wouldn't go away. I also had an unusual smell coming from
the exhaust. After several seconds I got P1320 and P0303 codes so my
mechanic replaced the #3 coil.
I was hoping that my brief rough idling at starts would disappear but
it is still happening. My mechanic tells me that if there are no
codes, it's not the coil. Is he right? What else could that be? If the
MIL is not on, there are definitely no codes in the ECM, right? |
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Guest
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| Posted:
Mon Dec 06, 2004 8:23 pm Post subject:
Re: 2000 I30 Rough Idling at Start |
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The thing is the engine judders for only 10 seconds whil the rpms go
down as explaine above. Everything returns to normal after that and
there is no juddering except at those startups which happens very
rarely.
Does your Maxima judder for the same 10 seconds with similar symptoms I
described? Did you fix the problem?
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Guest
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| Posted:
Mon Dec 06, 2004 9:02 pm Post subject:
Re: 2000 I30 Rough Idling at Start |
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Well, the problem is that it doesn't look like it's the coil. The
engine would judder very very rarely and only for like 10 seconds while
the rpms drop unsually. After those 10 seconds, everything return to
normal.
Your Maxima also judder for only 10 seconds or so at start up? |
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lwilliams
Guest
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| Posted:
Sat Dec 11, 2004 1:43 am Post subject:
Re: 2000 I30 Rough Idling at Start |
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Steve,
Have your auto techinical guy check the air idle motor unit on the fuel
injection unit.
"Steve B." <soccerman@mailandnews.com> wrote in message
news:201f8db7.0411200914.45b0a08e@posting.google.com...
| Quote: | My 2000 I30 has 64K miles. A couple of months ago coil #1 was
replaced. Recently, I noticed some rough engine idling in park(engine
is vibrating as if a coil is bad) when I start the car. The rpms would
go down quickly to almost 500 and then back up to the normal level and
then in about 10 seconds the engine idles normally. There are no codes
in the ECM, i.e. no MIL indicator. This doesn't happen every time I
start the car but seems to occur on warm engine starts and again not
evey time.
Now, a couple of days I started the car with engine cold and got rough
idling that wouldn't go away. I also had an unusual smell coming from
the exhaust. After several seconds I got P1320 and P0303 codes so my
mechanic replaced the #3 coil.
I was hoping that my brief rough idling at starts would disappear but
it is still happening. My mechanic tells me that if there are no
codes, it's not the coil. Is he right? What else could that be? If the
MIL is not on, there are definitely no codes in the ECM, right? |
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