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99 dodge 360 idle problem


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private pilot46
Anonymous Poster

Jul 11, 2008, 8:12 AM

Post #1 of 14 (2426 views)
post icon 99 dodge 360 idle problem Sign In

to "way2old". waiting for truck to cool so i can check cool. temp. sensor. since the cool.temp. gauge is working normally, do you still think that is the problem? maybe there is a second sensor for the gauge and you are right.


way2old
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Jul 11, 2008, 9:41 AM

Post #2 of 14 (2418 views)
Re: 99 dodge 360 idle problem Sign In

There are 2. One is the sensor(has 2 wires) which feeds computer. One is the sending unit(has one wire) which works the gauge. The one you want is buried down behind the alternator. Also, pleask keep your questions and replies under one thread. SO let's keep this one going and let the other 2 drop. OK??? Thanks.



Being way2old is why I need help from younger minds


Guest
Anonymous Poster

Jul 11, 2008, 12:41 PM

Post #3 of 14 (2412 views)
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In Reply To
to "way2old". waiting for truck to cool so i can check cool. temp. sensor. since the cool.temp. gauge is working normally, do you still think that is the problem? maybe there is a second sensor for the gauge and you are right.

checked cool. temp.sw. with digital meter. it read 2.7k when the engine was barely warm enough to clear the problem. after allowing engine to cool for about 4 hours with hood open it read 2.7k and meter showed it was stil lrising very slowly.


way2old
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way2old profile image

Jul 11, 2008, 3:59 PM

Post #4 of 14 (2406 views)
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I would replace the sensor. According to the chart below, the sensor starts reading at about 140 degrees.





Being way2old is why I need help from younger minds


private pilot46
Anonymous Poster

Jul 12, 2008, 6:58 AM

Post #5 of 14 (2401 views)
Re: 99 dodge 360 idle problem Sign In

please forgive my mistake in my last message. it should have said, after 4 hours sensor read 6.4k. now after sitting all night it reads 10.3k@74 degrees F air temp. don't give up on me.


way2old
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Jul 12, 2008, 7:18 AM

Post #6 of 14 (2398 views)
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We won't give up until you do. Next time it is cooled off over night and you can get to it, pull a few plugs and see if there is any fuel on them. There3 may be a possibility the injectors may be leaking off causing a very rich statr up. Keep us informed.



Being way2old is why I need help from younger minds


privare pilot46
Anonymous Poster

Jul 12, 2008, 9:16 AM

Post #7 of 14 (2395 views)
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starting at the front of the engine on the pass. side, first plug was dry, second plug was damp, third was dry, fourth was damp.. on drivers side starting at the front, 5 was dry and 6 was dry. didn't check last two. all plugs were light tan,gap close to spec.. truck has 60k miles with original plugs,wires,rotor and cap. didn't suspect any of these since truck runs great once it starts warming up.


way2old
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Jul 12, 2008, 5:53 PM

Post #8 of 14 (2387 views)
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You moight want to check the cap and rotor. They are in a hard place to get to. We have had Dodge products do crazy things due to ignition problems. If it is a 99 and has original ignition parts, they should be changed anyway(IMO). The cap could be condensating moisture from the heat after it cools down causing your problem.



Being way2old is why I need help from younger minds


private pilot46
Anonymous Poster

Jul 14, 2008, 7:35 AM

Post #9 of 14 (2383 views)
Re: 99 dodge 360 idle problem Sign In

new update on symtom. installed all new platinum plugs(same as old plugs). this time when i started truck i didn't touch gas until engine was up to temp.. the engine idled fine,but after revving engine in park several times, it started balking and running rough. it acted this way for 2-3 minutes then settled down and acted o.k.. when i drove it, it acted o,k.. this should rule out a problem with sensors,etc. that are part of the warmup cycle, right? do you still think cap or rotor could cause this?


way2old
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Jul 14, 2008, 5:12 PM

Post #10 of 14 (2373 views)
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Is there anyway you can have a scanner put on the truck and look at the O2 sensors? Also look at the long term and short term fuel readings. Might be wise to have it taken to a shop and pay them about 1/2 hour labor to read the computer for you.



Being way2old is why I need help from younger minds


private pilot 46
Anonymous Poster

Jul 21, 2008, 5:12 PM

Post #11 of 14 (2363 views)
Re: 99 dodge 360 idle problem Sign In

got chilton manual for my truck from library and tested o2 sensor using it as a guide. found heater for sensor was not working. changed sensor and have had no problem since. your expert guidance was greatly appreciated. THANKS! pp46


way2old
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Jul 21, 2008, 5:16 PM

Post #12 of 14 (2361 views)
Re: 99 dodge 360 idle problem Sign In

Thank you for the fix post. I can use that to get me a drink now.Wink



Being way2old is why I need help from younger minds


Double J
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Jul 23, 2008, 12:26 PM

Post #13 of 14 (2353 views)
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I think he's hoping someone will buy him a drink!

Even tho I know its not my turn,Lord knows i'm way ahead...

HERE W20...This one's for YOU!
Congratulations on a job well done!Tongue




Jim


way2old
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Jul 23, 2008, 4:45 PM

Post #14 of 14 (2349 views)
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Why, thank you Jim. I will share one with you.





Being way2old is why I need help from younger minds






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