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Tool Talk Discussion Forum

Dodge Truck Problem

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Big Swede

01-31-2006 20:26:00

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I know this is not a tool talk question, but with all the good information I have gotten off of this site, I thought I would go ahead and ask for advise from all of you. I have a '94 Dodge 1500 with a 318 and when it idles and at low rpm, the engine has a slight miss. It is just enough to feel it miss in the cab; it doesnt backfire or anything, you can just feel a miss. About 1 miss per second when the engine is below 1,500 rpm and then it clears up. It doesn't do it when accelerating. The truck has 155,000 on it and has new plugs and a new fuel pump. It is on the original catalytic converter and I thinkk that that could be what is causing the low rpm miss because it has gotten plugged up. What do you guys think. Thanks for any replies.

Swede

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MinneMoFan

02-02-2006 19:44:39

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Re: Dodge Truck Problem in reply to Big Swede, 01-31-2006 20:26:00

I had that problem in my gmc after i changed my plugs and wires it ended up being a cracked insulator on a spark plug might be it might not

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Leland

02-02-2006 05:47:26

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Re: Dodge Truck Problem in reply to Big Swede, 01-31-2006 20:26:00

Do a google search on this truck and motor ,dodge has a lot of hidden problems as I found out when I done a search on the wifes 99intreped with a 2.7 kinda of scary when you do the research .

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RB/CT

02-01-2006 16:21:38

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Re: Dodge Truck Problem in reply to Big Swede, 01-31-2006 20:26:00

WOW! And I thought that this series engine was one of mopars best. It really is. Cast iron block and heads. Best valvetrain design there was. You got some really good advice. Have it analyzed on a computer and see what they say. Or, as said, change the cap and rotor, you need this anyway. Emissions in your State, if no, drill the Cat out with a 3/4 inch long drill, or empty it, wearing a mask. The 318, 340 and 360 LA engines were well designed and practical. That is why they were discontinued. Good luck.

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Big Swede

02-01-2006 22:59:12

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Re: Dodge Truck Problem in reply to RB/CT, 02-01-2006 16:21:38

Thanks for the advise guys. I will start with the small stuff and work up from there. After I put the new plugs in it got almost 18 mpg on the highway. I should have done it sooner. I will start with the small stuff and work from there. Hope I can have it running better from your advise and I hope that I can get it running smoother without a valve job. Even with the high miles, the truck doesn't use andy oil between changes. It had a new transmission when I bought ot and would like to keep it for awhile. It has been a very dependable truck for me and I hope that it will be used for quite awhile.

Thanks for the advise,

Big Swede

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toolman

02-01-2006 12:56:07

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Re: Dodge Truck Problem in reply to Big Swede, 01-31-2006 20:26:00

I had a similar problem, went the plugs, wires, etc. route , was worse after it warmed up, but like yours only at idle, turned out to be the EGR valve, watch it move or disconnect it and see if the miss goes away then reconnect it again, about a 100 bucks can. easy to check , cheaper than a valve job or cat.good luck.

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ryan from WI

02-01-2006 12:38:44

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Re: Dodge Truck Problem in reply to Big Swede, 01-31-2006 20:26:00

That is not the only problem with dodge. It is everthing that they have problems with. They are pieces of junk.

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02-05-2006 18:40:01

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Re: Dodge Truck Problem in reply to ryan from WI , 02-01-2006 12:38:44

You"re right.....guess I"ll junk my Ram. :-(

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skipjack

02-05-2006 18:20:38

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Re: Dodge Truck Problem in reply to ryan from WI , 02-01-2006 12:38:44

Yer a FORD guy, ROGER?

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02-03-2006 09:42:06

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Re: Dodge Truck Problem in reply to ryan from WI , 02-01-2006 12:38:44

Yeah,,,,, ,maybe they shold follow Fords' lead.

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Mike M

02-02-2006 09:25:22

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Re: Dodge Truck Problem in reply to ryan from WI , 02-01-2006 12:38:44

Ya right ? That's why his made it to 155,000 mi without any problems and mine has 163,000.

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varmint

02-05-2006 06:48:01

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Re: Dodge Truck Problem in reply to Mike M, 02-02-2006 09:25:22

well, just so you know I got a "93 318 Dakota with 168,000 on it an it still gits "er done.

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ih650

02-01-2006 12:13:08

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Re: Dodge Truck Problem in reply to Big Swede, 01-31-2006 20:26:00

It's the vavles and seats. It's common on the 318. Call a machine shop and ask them.

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Mike M

02-01-2006 05:33:01

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Re: Dodge Truck Problem in reply to Big Swede, 01-31-2006 20:26:00

If your cat. gets plugged you should notice a loss of power on the high end.

My 1996 with a 360 sometimes has a slight miss at idle you can feel it in the seat. Sometimes it seems like different brands of gas changes it.

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Hobo,NC

02-01-2006 05:07:45

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Re: Dodge Truck Problem in reply to Big Swede, 01-31-2006 20:26:00

A cylinder linkage test will find the bad valve seat you have a problem with, On these trucks the valve seats izz to soft and ware out and a valve izz sunk into the seat. A compression test may not show it. I also have seen a guide ware out enough to do this and a run�in compression test will show it up. If the lower intake gasket izz blown it does not usual skip but will have a fast idle, EZ to check remove the oil cap and PCV valve then with engine run�in cover both holes in the valve cover and if you have vacuum in the crank case you will feel it with yer hands over the holes in the valve cover you have a bad lower intake gasket, remember all hoses to both valve covers need to be removed and blocked off, it may have a crankcase vent that needs to come out to I don�t remember

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barnrat

02-01-2006 04:11:55

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Re: Dodge Truck Problem in reply to Big Swede, 01-31-2006 20:26:00

On the 2nd generation Dodges like yours that Cat needs to be changed every 60-80k miles. When you put new plugs on these engines, put new wires, cap and rotor or your just wasting your time. Find an after market brass cap and rotor and HD wires. OEM plugs, wires, cap and rotor will only last a maximum of 30k miles. With the plenum gasket as metioned below. If that has failed your engine will make a noticable ping on acceleration, and will use a quart of oil bout every 500 miles or less.

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John in Nebraska

01-31-2006 21:46:15

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Re: Dodge Truck Problem in reply to Big Swede, 01-31-2006 20:26:00

Dodge used a barrel looking intake manifold, I'd have to check to be sure if your 95 has one. The bottom of the intake plenum is blocked off with a steel plate, bolted on. The gasket likes to leak after a time, and the engine draws in air and oil vapor which really upsets the idle. How are the plugs? One or two will show oil fouling perhaps, if it is leaking. Not real hard, but takes time to renew this gasket.

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JD9295

01-31-2006 20:37:43

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Re: Dodge Truck Problem in reply to Big Swede, 01-31-2006 20:26:00

Buddy of mine had the same problem on his 318. He had replaced the plugs and wires and it ended up be the coils. I think he said there were 2 banks, 4 on each side. He replaced his with an aftermarket one and gets a lot better performance now also

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Hawaiirocky

01-31-2006 20:32:40

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Re: Dodge Truck Problem in reply to Big Swede, 01-31-2006 20:26:00

I'd guess the timing chain is pretty worn and slack, but it could be a lot of things. The cat usually smells like rotten eggs if it's clogged. I wouldn't bother fixing it unless you really like the truck.

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