95 Caravan Check Engine Light

I've followed a couple topics about the Check Engine Light, aka MIL.

I turned the key switch on/off/on .... 5 times and get the following
blinks:

1,2,2,1,5,5

I'm not sure how to intrepret them.

Anyone have any idea?

Mike

The first two digits are a code 12 which means start of codes. The last two
digits are a 55, which means end of codes. The middle two are your problem
and this is a code 21. I believe this is identifying an oxygen sensor
problem. Do a Google search on this code using some keywords like "Chrysler
Engine Diagnostic Code 21" and you will likely find a lot of useful
information. Here is one page I found right away that provides some info
for you on codes and proper procedure (on-ff three times not 5):

http://minimopar.knizefamily.net/fault/index.html

Bob


"mike" > wrote in message
oups.com...
> I've followed a couple topics about the Check Engine Light, aka MIL.
>
> I turned the key switch on/off/on .... 5 times and get the following
> blinks:
>
> 1,2,2,1,5,5
>
> I'm not sure how to intrepret them.
>
> Anyone have any idea?
>
> Mike
>

Bob,

Thanks, it has been running rich.

BTW, What kind of spark plugs would you put in there?

Bosch or A/C Delco?

Mike

Champion are the recommended original equipment and seem to be best based on
negative feedback on the other two choices you named.

Bob

"mike" > wrote in message
ups.com...
> Bob,
>
> Thanks, it has been running rich.
>
> BTW, What kind of spark plugs would you put in there?
>
> Bosch or A/C Delco?
>
> Mike
>

Crap, I just came back from installing the front 3. I bought Delco.
Yes, the ones I removed were champion. I had to choose between Bosch
and Delco. The guys in the shop recommended Delco.

I was under the car looking at the back 3. I didn't have time to
install them though.

Do you think changing them from below is the easiest method?

Looks like I'll have to get a long screwdriver to push the plug cap
off.

Mike

"Bob Shuman" > wrote in message
...
>
> "mike" > wrote in message
> ups.com...
>> Bob,
>>
>> Thanks, it has been running rich.
>>
>> BTW, What kind of spark plugs would you put in there?
>>
>> Bosch or A/C Delco?
>>
>> Mike
>>
>
> Champion are the recommended original equipment and seem to be best based
> on
> negative feedback on the other two choices you named.
>
> Bob

Mine (95 3.0 Ltr) came with NGK's installed.
Not being a fan of AC or Champion, I have always replaced with same.

"mike" > wrote in message
oups.com...
> Crap, I just came back from installing the front 3. I bought Delco.
> Yes, the ones I removed were champion. I had to choose between Bosch
> and Delco. The guys in the shop recommended Delco.
>
> I was under the car looking at the back 3. I didn't have time to
> install them though.
>
> Do you think changing them from below is the easiest method?
>
> Looks like I'll have to get a long screwdriver to push the plug cap
> off.
>

Much easier (IMHO) to remove the air box on top and get them from the
top-side.
#1 can be a pain in the A$$ due to the alternator bracket, but can be gotten
without removing bracket if you have a
knuckle attachment for your ratchet.

As I recall, I accessed two of the rear plugs from underneath the vehicle
and removed the rear alternator bracket and accessed the worst plug
(passenger side rear) from the top side. Note that I did not need to remove
the alternator and it did not move since it was secured by a front-side
bolt.

With regard to the plugs, NGK are an excellent brand and were used as
original equipment with the Mitsubishi 3.0 engine. As I recall the OP had a
Chrysler 3.3 or 3.8L and these came with and work best (in my opinion) with
Champion.

Bob

"PC Medic" > wrote in message
news:N23qe.88055$yV4.72907@okepread03...
>
> "mike" > wrote in message
> oups.com...
> > Crap, I just came back from installing the front 3. I bought Delco.
> > Yes, the ones I removed were champion. I had to choose between Bosch
> > and Delco. The guys in the shop recommended Delco.
> >
> > I was under the car looking at the back 3. I didn't have time to
> > install them though.
> >
> > Do you think changing them from below is the easiest method?
> >
> > Looks like I'll have to get a long screwdriver to push the plug cap
> > off.

> Much easier (IMHO) to remove the air box on top and get them from the
> top-side.
> #1 can be a pain in the A$$ due to the alternator bracket, but can be
gotten
> without removing bracket if you have a
> knuckle attachment for your ratchet.

NGK's are the best. NExt time.

BTW, reading back up at the original post about my "Check Engine
Light". I replaced the O2 sensor and the light does not seem to go on
anymore. Not on in either 2 times it has been driven.

How long before the codes get changed back to the default?

Is 1,2,5,5 the default?

Thanks,

Mike

"mike" > wrote in message
oups.com...
> NGK's are the best. NExt time.
>
> BTW, reading back up at the original post about my "Check Engine
> Light". I replaced the O2 sensor and the light does not seem to go on
> anymore. Not on in either 2 times it has been driven.
>
> How long before the codes get changed back to the default?
>
> Is 1,2,5,5 the default?
>

This should return back to 5,5 after I believe 20 starts.