Firebird

Why did I use Premium...I had been using regular in it since I got it...but
it was winter and I thought a little Premium would be good....I used it for
a few weeks....and while idling in traffic, I noticed the light go on...but
there was no misfire or anything like that.
"billy ray" <billy_ray@SPAMfuse.net> wrote in message
news:43ca1$4448ec9f$48311525$24914@FUSE.NET...
> Sorry.... from your original post I was assuming this was an ongoing not a
> one time problem.
>
> Well..... That is probably not the problem directly and there is always
> the possibility of bad gas but may I ask why you use premium?
>
> Back-in-the-day the oil companies actively promoted Premium gasoline as
> having 'more power'.
>
> The real story is that high compression gasoline engines begin to act
> similarly to Bill ------ beloved diesels. The way they compensated for
> this tendency for detonation was to make the gasoline burn slower.... yes
> I say BURN SLOWER..... the higher the compression the higher the needed
> octane to prevent engine damage.
>
> It is more correct to say that Premium gasoline has 'less power' than
> 'more power' in a standard engine.
>
> Why do we 30 years after the last 'real' engines cling to this myth? If
> you are my age or older you received daily propaganda about Sunoco 260,
> Union 76's 105 Racing gasoline, and my personal favorite Humble
> (Esso-Exon, Exxon) 'Put a tiger in your tank'.
> http://www.adslogans.co.uk/hof/ad_esso.html
>
> For a while unscrupulous companies only put adequate detergents, etc in
> their premium grades but that is rarely the case now..
>
>
>
>
>
> "Firebird" <erodman@nyc.rr.com> wrote in message
> news:6Z12g.40608$x97.30012@news-wrt-01.rdc-nyc.rr.com...
>> It is a I-6.
>> I had it at the dealer, they found no problem with the plugs.
>> The engine runs smoothly, it does not misfire or shake or anything like
>> that,
>> the code just came on...One thing however, I had been using Premium
>> unleaded gas for about 3 weeks.
>> Thats the only thing that was different.
>>
>>
>> "billy ray" <billy_ray@SPAMfuse.net> wrote in message
>> news:93bad$444843f5$48311525$18862@FUSE.NET...
>>> Is it a I-6 or the V-8?
>>>
>>> The '01s have no distributor cap or wires. They do have coil packs
>>> (I-6) or coil on wire (V-8)
>>>
>>> On an I-6 a coil problem would show up on cylinders 1 & 6 as that same
>>> coil pack fires both.
>>>
>>> A close examination of the sparkplug may reveal if a plug is oil fouled,
>>> contaminated by coolant, or damaged. If the misfire occurs only
>>> occasionally (but enough to set off the code) it may appear 'normal'
>>>
>>> If the plugs are more than a year old go ahead and change them all, if
>>> less you might try just one plug in cylinder #1
>>>
>>> I personally prefer the Bosch Platinum plugs but if you have a
>>> preference for copper then I would suggest Bosch Supers.
>>>
>>>
>>> "DougW" <post.replies@invalid.address> wrote in message
>>> news:51V1g.19591$IZ2.489@dukeread07...
>>>> Mike Romain did pass the time by typing:
>>>>> I think I would be first looking at the distributor cap under a strong
>>>>> light for a small white spider web looking mark around the post for
>>>>> that
>>>>> cylinder.
>>>>
>>>> <snippies>
>>>>
>>>> Also if that's a coil on plug setup, 1 and 3 fire at the same time.
>>>> A leaky injector on #1 (or a fowled plug) can cause a misfire.
>>>>
>>>> I'd take a look at the plug first.
>>>>
>>>>> Firebird wrote:
>>>>>>
>>>>>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was
>>>>>> on and
>>>>>> the code being displayed is P0301, which is misfire in cylinder 1. I
>>>>>> finally
>>>>>> brought it to the Jeep dealer, they could not find any issues with
>>>>>> the
>>>>>> plugs, wires etc..
>>>>
>>>> --
>>>> DougW
>>>>
>>>>
>>>
>>>
>>
>>
>
>

Firebird

Why did I use Premium...I had been using regular in it since I got it...but
it was winter and I thought a little Premium would be good....I used it for
a few weeks....and while idling in traffic, I noticed the light go on...but
there was no misfire or anything like that.
"billy ray" <billy_ray@SPAMfuse.net> wrote in message
news:43ca1$4448ec9f$48311525$24914@FUSE.NET...
> Sorry.... from your original post I was assuming this was an ongoing not a
> one time problem.
>
> Well..... That is probably not the problem directly and there is always
> the possibility of bad gas but may I ask why you use premium?
>
> Back-in-the-day the oil companies actively promoted Premium gasoline as
> having 'more power'.
>
> The real story is that high compression gasoline engines begin to act
> similarly to Bill ------ beloved diesels. The way they compensated for
> this tendency for detonation was to make the gasoline burn slower.... yes
> I say BURN SLOWER..... the higher the compression the higher the needed
> octane to prevent engine damage.
>
> It is more correct to say that Premium gasoline has 'less power' than
> 'more power' in a standard engine.
>
> Why do we 30 years after the last 'real' engines cling to this myth? If
> you are my age or older you received daily propaganda about Sunoco 260,
> Union 76's 105 Racing gasoline, and my personal favorite Humble
> (Esso-Exon, Exxon) 'Put a tiger in your tank'.
> http://www.adslogans.co.uk/hof/ad_esso.html
>
> For a while unscrupulous companies only put adequate detergents, etc in
> their premium grades but that is rarely the case now..
>
>
>
>
>
> "Firebird" <erodman@nyc.rr.com> wrote in message
> news:6Z12g.40608$x97.30012@news-wrt-01.rdc-nyc.rr.com...
>> It is a I-6.
>> I had it at the dealer, they found no problem with the plugs.
>> The engine runs smoothly, it does not misfire or shake or anything like
>> that,
>> the code just came on...One thing however, I had been using Premium
>> unleaded gas for about 3 weeks.
>> Thats the only thing that was different.
>>
>>
>> "billy ray" <billy_ray@SPAMfuse.net> wrote in message
>> news:93bad$444843f5$48311525$18862@FUSE.NET...
>>> Is it a I-6 or the V-8?
>>>
>>> The '01s have no distributor cap or wires. They do have coil packs
>>> (I-6) or coil on wire (V-8)
>>>
>>> On an I-6 a coil problem would show up on cylinders 1 & 6 as that same
>>> coil pack fires both.
>>>
>>> A close examination of the sparkplug may reveal if a plug is oil fouled,
>>> contaminated by coolant, or damaged. If the misfire occurs only
>>> occasionally (but enough to set off the code) it may appear 'normal'
>>>
>>> If the plugs are more than a year old go ahead and change them all, if
>>> less you might try just one plug in cylinder #1
>>>
>>> I personally prefer the Bosch Platinum plugs but if you have a
>>> preference for copper then I would suggest Bosch Supers.
>>>
>>>
>>> "DougW" <post.replies@invalid.address> wrote in message
>>> news:51V1g.19591$IZ2.489@dukeread07...
>>>> Mike Romain did pass the time by typing:
>>>>> I think I would be first looking at the distributor cap under a strong
>>>>> light for a small white spider web looking mark around the post for
>>>>> that
>>>>> cylinder.
>>>>
>>>> <snippies>
>>>>
>>>> Also if that's a coil on plug setup, 1 and 3 fire at the same time.
>>>> A leaky injector on #1 (or a fowled plug) can cause a misfire.
>>>>
>>>> I'd take a look at the plug first.
>>>>
>>>>> Firebird wrote:
>>>>>>
>>>>>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was
>>>>>> on and
>>>>>> the code being displayed is P0301, which is misfire in cylinder 1. I
>>>>>> finally
>>>>>> brought it to the Jeep dealer, they could not find any issues with
>>>>>> the
>>>>>> plugs, wires etc..
>>>>
>>>> --
>>>> DougW
>>>>
>>>>
>>>
>>>
>>
>>
>
>

Firebird

Why did I use Premium...I had been using regular in it since I got it...but
it was winter and I thought a little Premium would be good....I used it for
a few weeks....and while idling in traffic, I noticed the light go on...but
there was no misfire or anything like that.
"billy ray" <billy_ray@SPAMfuse.net> wrote in message
news:43ca1$4448ec9f$48311525$24914@FUSE.NET...
> Sorry.... from your original post I was assuming this was an ongoing not a
> one time problem.
>
> Well..... That is probably not the problem directly and there is always
> the possibility of bad gas but may I ask why you use premium?
>
> Back-in-the-day the oil companies actively promoted Premium gasoline as
> having 'more power'.
>
> The real story is that high compression gasoline engines begin to act
> similarly to Bill ------ beloved diesels. The way they compensated for
> this tendency for detonation was to make the gasoline burn slower.... yes
> I say BURN SLOWER..... the higher the compression the higher the needed
> octane to prevent engine damage.
>
> It is more correct to say that Premium gasoline has 'less power' than
> 'more power' in a standard engine.
>
> Why do we 30 years after the last 'real' engines cling to this myth? If
> you are my age or older you received daily propaganda about Sunoco 260,
> Union 76's 105 Racing gasoline, and my personal favorite Humble
> (Esso-Exon, Exxon) 'Put a tiger in your tank'.
> http://www.adslogans.co.uk/hof/ad_esso.html
>
> For a while unscrupulous companies only put adequate detergents, etc in
> their premium grades but that is rarely the case now..
>
>
>
>
>
> "Firebird" <erodman@nyc.rr.com> wrote in message
> news:6Z12g.40608$x97.30012@news-wrt-01.rdc-nyc.rr.com...
>> It is a I-6.
>> I had it at the dealer, they found no problem with the plugs.
>> The engine runs smoothly, it does not misfire or shake or anything like
>> that,
>> the code just came on...One thing however, I had been using Premium
>> unleaded gas for about 3 weeks.
>> Thats the only thing that was different.
>>
>>
>> "billy ray" <billy_ray@SPAMfuse.net> wrote in message
>> news:93bad$444843f5$48311525$18862@FUSE.NET...
>>> Is it a I-6 or the V-8?
>>>
>>> The '01s have no distributor cap or wires. They do have coil packs
>>> (I-6) or coil on wire (V-8)
>>>
>>> On an I-6 a coil problem would show up on cylinders 1 & 6 as that same
>>> coil pack fires both.
>>>
>>> A close examination of the sparkplug may reveal if a plug is oil fouled,
>>> contaminated by coolant, or damaged. If the misfire occurs only
>>> occasionally (but enough to set off the code) it may appear 'normal'
>>>
>>> If the plugs are more than a year old go ahead and change them all, if
>>> less you might try just one plug in cylinder #1
>>>
>>> I personally prefer the Bosch Platinum plugs but if you have a
>>> preference for copper then I would suggest Bosch Supers.
>>>
>>>
>>> "DougW" <post.replies@invalid.address> wrote in message
>>> news:51V1g.19591$IZ2.489@dukeread07...
>>>> Mike Romain did pass the time by typing:
>>>>> I think I would be first looking at the distributor cap under a strong
>>>>> light for a small white spider web looking mark around the post for
>>>>> that
>>>>> cylinder.
>>>>
>>>> <snippies>
>>>>
>>>> Also if that's a coil on plug setup, 1 and 3 fire at the same time.
>>>> A leaky injector on #1 (or a fowled plug) can cause a misfire.
>>>>
>>>> I'd take a look at the plug first.
>>>>
>>>>> Firebird wrote:
>>>>>>
>>>>>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was
>>>>>> on and
>>>>>> the code being displayed is P0301, which is misfire in cylinder 1. I
>>>>>> finally
>>>>>> brought it to the Jeep dealer, they could not find any issues with
>>>>>> the
>>>>>> plugs, wires etc..
>>>>
>>>> --
>>>> DougW
>>>>
>>>>
>>>
>>>
>>
>>
>
>

Firebird

I replaced the plugs a little over a year ago....at 60K miles. The plugs
have 5K miles on them.
"Herb Leong" <herb@urusei.net> wrote in message
news:RoqdnZQDFLD3QdXZnZ2dnUVZ_vidnZ2d@speakeasy.ne t...
> In article <NY12g.33062$cY3.106@news-wrt-01.rdc-nyc.rr.com>,
> Firebird <erodman@nyc.rr.com> wrote:
> #The I-6.
>
> As someone said earlier, the I-6 fires two chambers at the same
> time so it could be either 1 or 6.
>
> It could have been a slightly loose wire, or the the coil pack
> might be headded south.
>
> How old are the spark plugs? While they are probably still good,
> it can't hurt to re-gap or replace them if the maint schedule says
> to do so. http://www.wjjeeps.com/service/sparkplugs.htm
>
> /herb

Firebird

I replaced the plugs a little over a year ago....at 60K miles. The plugs
have 5K miles on them.
"Herb Leong" <herb@urusei.net> wrote in message
news:RoqdnZQDFLD3QdXZnZ2dnUVZ_vidnZ2d@speakeasy.ne t...
> In article <NY12g.33062$cY3.106@news-wrt-01.rdc-nyc.rr.com>,
> Firebird <erodman@nyc.rr.com> wrote:
> #The I-6.
>
> As someone said earlier, the I-6 fires two chambers at the same
> time so it could be either 1 or 6.
>
> It could have been a slightly loose wire, or the the coil pack
> might be headded south.
>
> How old are the spark plugs? While they are probably still good,
> it can't hurt to re-gap or replace them if the maint schedule says
> to do so. http://www.wjjeeps.com/service/sparkplugs.htm
>
> /herb

Firebird

I replaced the plugs a little over a year ago....at 60K miles. The plugs
have 5K miles on them.
"Herb Leong" <herb@urusei.net> wrote in message
news:RoqdnZQDFLD3QdXZnZ2dnUVZ_vidnZ2d@speakeasy.ne t...
> In article <NY12g.33062$cY3.106@news-wrt-01.rdc-nyc.rr.com>,
> Firebird <erodman@nyc.rr.com> wrote:
> #The I-6.
>
> As someone said earlier, the I-6 fires two chambers at the same
> time so it could be either 1 or 6.
>
> It could have been a slightly loose wire, or the the coil pack
> might be headded south.
>
> How old are the spark plugs? While they are probably still good,
> it can't hurt to re-gap or replace them if the maint schedule says
> to do so. http://www.wjjeeps.com/service/sparkplugs.htm
>
> /herb

Firebird

Hi....

I don't have to do any repairs. The Jeep runs fine. WHat is the issue with
the gas cap...
Can it cause this problem...I will replace it tomorrow.

Thanks....did you have the same issue...P0301
<sallyaugust2@hotmail.com> wrote in message
news:1145634569.401427.40780@g10g2000cwb.googlegro ups.com...
> Hopefully you get this in time... Before you dip into your pocket.
> CHANGE THE GAS CAP....
>
>
> Firebird wrote:
>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on
>> and
>> the code being displayed is P0301, which is misfire in cylinder 1. I
>> finally
>> brought it to the Jeep dealer, they could not find any issues with the
>> plugs, wires etc..
>> So, they reprogrammed the computer, and told me if the lite comes on
>> again
>> then the cylinder head would require removal and possible replacement
>> would
>> be required...
>>
>> The car runs fine...except for the dumb light. DOes anyone experience
>> this
>> same issue also.
>> Thanks
>

Firebird

Hi....

I don't have to do any repairs. The Jeep runs fine. WHat is the issue with
the gas cap...
Can it cause this problem...I will replace it tomorrow.

Thanks....did you have the same issue...P0301
<sallyaugust2@hotmail.com> wrote in message
news:1145634569.401427.40780@g10g2000cwb.googlegro ups.com...
> Hopefully you get this in time... Before you dip into your pocket.
> CHANGE THE GAS CAP....
>
>
> Firebird wrote:
>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on
>> and
>> the code being displayed is P0301, which is misfire in cylinder 1. I
>> finally
>> brought it to the Jeep dealer, they could not find any issues with the
>> plugs, wires etc..
>> So, they reprogrammed the computer, and told me if the lite comes on
>> again
>> then the cylinder head would require removal and possible replacement
>> would
>> be required...
>>
>> The car runs fine...except for the dumb light. DOes anyone experience
>> this
>> same issue also.
>> Thanks
>

Firebird

Hi....

I don't have to do any repairs. The Jeep runs fine. WHat is the issue with
the gas cap...
Can it cause this problem...I will replace it tomorrow.

Thanks....did you have the same issue...P0301
<sallyaugust2@hotmail.com> wrote in message
news:1145634569.401427.40780@g10g2000cwb.googlegro ups.com...
> Hopefully you get this in time... Before you dip into your pocket.
> CHANGE THE GAS CAP....
>
>
> Firebird wrote:
>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was on
>> and
>> the code being displayed is P0301, which is misfire in cylinder 1. I
>> finally
>> brought it to the Jeep dealer, they could not find any issues with the
>> plugs, wires etc..
>> So, they reprogrammed the computer, and told me if the lite comes on
>> again
>> then the cylinder head would require removal and possible replacement
>> would
>> be required...
>>
>> The car runs fine...except for the dumb light. DOes anyone experience
>> this
>> same issue also.
>> Thanks
>

billy ray

It was probably a one time thing then....

I would not bother with replacing the gas cap, when they go bad they usually
throw off a P0456 code.
http://www.imagestation.com/album/?id=2122725727

With 60k your WJ might well benefit from a bit-o-cleaning in the engine
starting with the throttle body. That requires an old toothbrush and a can
of good quality cleaner. I used GumOut Jet Spray ($3.19).
http://www.imagestation.com/album/?id=2122181169

And in case your intake valves, cylinder walls, piston rings, and injectors
have deposits you might want to clean them also. There are several good
brands, I used SeaFoam.($5.99)
http://www.imagestation.com/album/?id=2107498956

Will you WJ run just fine without these cleanings? Probably but then the
cleaning cost will be offset by using regular 87 octane plus you get the
benefit of doing something nice for your Jeep....





"Firebird" <erodman@nyc.rr.com> wrote in message
news:jSd2g.26075$nA3.18012@news-wrt-01.rdc-nyc.rr.com...
> Why did I use Premium...I had been using regular in it since I got
> it...but it was winter and I thought a little Premium would be good....I
> used it for a few weeks....and while idling in traffic, I noticed the
> light go on...but there was no misfire or anything like that.
> "billy ray" <billy_ray@SPAMfuse.net> wrote in message
> news:43ca1$4448ec9f$48311525$24914@FUSE.NET...
>> Sorry.... from your original post I was assuming this was an ongoing not
>> a one time problem.
>>
>> Well..... That is probably not the problem directly and there is always
>> the possibility of bad gas but may I ask why you use premium?
>>
>> Back-in-the-day the oil companies actively promoted Premium gasoline as
>> having 'more power'.
>>
>> The real story is that high compression gasoline engines begin to act
>> similarly to Bill ------ beloved diesels. The way they compensated for
>> this tendency for detonation was to make the gasoline burn slower.... yes
>> I say BURN SLOWER..... the higher the compression the higher the needed
>> octane to prevent engine damage.
>>
>> It is more correct to say that Premium gasoline has 'less power' than
>> 'more power' in a standard engine.
>>
>> Why do we 30 years after the last 'real' engines cling to this myth? If
>> you are my age or older you received daily propaganda about Sunoco 260,
>> Union 76's 105 Racing gasoline, and my personal favorite Humble
>> (Esso-Exon, Exxon) 'Put a tiger in your tank'.
>> http://www.adslogans.co.uk/hof/ad_esso.html
>>
>> For a while unscrupulous companies only put adequate detergents, etc in
>> their premium grades but that is rarely the case now..
>>
>>
>>
>>
>>
>> "Firebird" <erodman@nyc.rr.com> wrote in message
>> news:6Z12g.40608$x97.30012@news-wrt-01.rdc-nyc.rr.com...
>>> It is a I-6.
>>> I had it at the dealer, they found no problem with the plugs.
>>> The engine runs smoothly, it does not misfire or shake or anything like
>>> that,
>>> the code just came on...One thing however, I had been using Premium
>>> unleaded gas for about 3 weeks.
>>> Thats the only thing that was different.
>>>
>>>
>>> "billy ray" <billy_ray@SPAMfuse.net> wrote in message
>>> news:93bad$444843f5$48311525$18862@FUSE.NET...
>>>> Is it a I-6 or the V-8?
>>>>
>>>> The '01s have no distributor cap or wires. They do have coil packs
>>>> (I-6) or coil on wire (V-8)
>>>>
>>>> On an I-6 a coil problem would show up on cylinders 1 & 6 as that same
>>>> coil pack fires both.
>>>>
>>>> A close examination of the sparkplug may reveal if a plug is oil
>>>> fouled, contaminated by coolant, or damaged. If the misfire occurs
>>>> only occasionally (but enough to set off the code) it may appear
>>>> 'normal'
>>>>
>>>> If the plugs are more than a year old go ahead and change them all, if
>>>> less you might try just one plug in cylinder #1
>>>>
>>>> I personally prefer the Bosch Platinum plugs but if you have a
>>>> preference for copper then I would suggest Bosch Supers.
>>>>
>>>>
>>>> "DougW" <post.replies@invalid.address> wrote in message
>>>> news:51V1g.19591$IZ2.489@dukeread07...
>>>>> Mike Romain did pass the time by typing:
>>>>>> I think I would be first looking at the distributor cap under a
>>>>>> strong
>>>>>> light for a small white spider web looking mark around the post for
>>>>>> that
>>>>>> cylinder.
>>>>>
>>>>> <snippies>
>>>>>
>>>>> Also if that's a coil on plug setup, 1 and 3 fire at the same time.
>>>>> A leaky injector on #1 (or a fowled plug) can cause a misfire.
>>>>>
>>>>> I'd take a look at the plug first.
>>>>>
>>>>>> Firebird wrote:
>>>>>>>
>>>>>>> I have a 2001 Jeep Grand Cherokee Laredo. My check engine light was
>>>>>>> on and
>>>>>>> the code being displayed is P0301, which is misfire in cylinder 1. I
>>>>>>> finally
>>>>>>> brought it to the Jeep dealer, they could not find any issues with
>>>>>>> the
>>>>>>> plugs, wires etc..
>>>>>
>>>>> --
>>>>> DougW
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>