| From | Message |
Jimmy
Dodge Dakota
JOIN HERE
6/27/2004
19:56:10
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 Subject: Spark Plugs
IP: Logged
Message:
88 3.9 replacement engine running rough.Autolite ap 65 running white,too cold.Replaced with AP64 gapped at 40.Electrodes slightly grey and insulator is white.Any suggestions on where to go from here? thahks in advance.
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J and J Auto
GenII
 
6/28/2004
20:07:02
| RE: Spark Plugs
IP: Logged
Message:
AP64 is a colder plug but also has a plat tip
open it to .045 and try that
Your o2 may also be bad it controls the throttle
body injection rate
White is hot not cold but you went the right way
with the 64
Larry
J&J Auto
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Jimmy
Dodge Dakota
JOIN HERE
6/29/2004
16:29:27
| RE: Spark Plugs
IP: Logged
Message:
It has a new o2 sensor but has never idled good or run good since the engine swap.One day runs fair next day poorly.Are o2's sometimes bad out of the box?
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Bob Lincoln
Dodge Dakota
JOIN HERE
6/29/2004
17:38:58
| RE: Spark Plugs
IP: Logged
Message:
Rarely. You need a few driving trips to make the SBEC re-learn with the new O2 sensor. My dad and I just drove his car from FL to MA with a new sensor, got 23, then 26, 27 and then 28 mpg under identical driving conditions.
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Jimmy
Dodge Dakota
JOIN HERE
6/29/2004
18:41:17
| RE: Spark Plugs
IP: Logged
Message:
It has been on since new engine install 8,000 mi ago. 15.5 old engine 15.5 per gallon new engine.
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GB2000
GenIII
6/29/2004
19:35:50
| RE: Spark Plugs
IP: Logged
Message:
Try this... go get a bottle of fuel system cleaner and run that through your engine. I just put a bottle of the STP Entire Fuel System Cleaner (gray bottle that says use only once every 4000 miles) and my gas mileage definitely improved at least a little. How much, I'm not quite sure yet...but I can tell you before I was getting almost exactly 25 miles per 1/8 tank mark on the gauge (every tank for the past few tanks). My last fill up was the first since I ran that bottle through my system and I am only down 3/8 of a tank with 100 miles. It looks like I may get 125 miles to a half tank (on the gauge) whereas I used to get no more than 100. We'll see when I calculate my gas mileage next fill-up though...maybe my gauge is just messed up since I ran that cleaner through...lol
Josh
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