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*FIXED* Now what, rough idle...won't start
12-09-2009, 05:20 PM (This post was last modified: 12-11-2009 10:53 AM by rich_kildow.)
Post: #1
*FIXED* Now what, rough idle...won't start
I'm back for my weekly problem w/ my Ram.

2 weeks ago, it developed a rough idle and horrible surging in overdrive. Had a burned plug wire, which I replaced along with the plug and all was well until yesterday. I also installed my freeze plug block heater at that time. Worked perfectly until this.

The wife went to leave work with it yesterday, and it started to idle very roughly and make a sucking noise through the intake, along with some sort of rattling noise (which MAY have been the muffler which needs replaced.) A friend towed it home since I was out of town and said the CEL was coming on while they were towing it.

I got home, charged that battery, and started it. It made the sucking noise through the intake while idling rough and died. Now it won't restart. No codes. I unhooked the battery to reset the comp and see if that helped, and it will crank but not fire. This is the first cold day we have had. It is pushing zero and I can't get it into the garage, so I am looking at having it towed and worked on, but I'm looking for a place to start.

I was unable to get the rear o2 sensor out and changed while I was working on it 2 weeks ago, and I suspect that is bad. It has also had an ongoing problem of developing a rough idle shortly after being started cold. The engine will start to lope and it will start to suck air through the IAC passage. i know this because I have pulled the air box and stuck my finger in front of the IAC and can feel the air rushing. Could either of these, combined with the cold contribute to this?




1998 Ram 1500 Quad Cab 4x4 360. Bone stock & gonna stay that way since it only tows my 18\' bass boat.
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12-09-2009, 08:30 PM
Post: #2
RE: Now what, rough idle...won't start
Update: Got it to turn over. It took about 10 seconds of cranking and it barely took off, but it ran. It was sucking very loudly through the air box (IAC area as described above). RPM's were normal, but it felt like it was missing on several cylinders. Did not thrown any codes and did not show any pending codes.

Would a cat suddenly plug like that, and would that cause my symptoms, particularly as I updated? And from what I understand, they don't just randomly plug up, there is some other cause. Everything but the sucking noise came on very quickly while my wife was driving.

You are correct about charging the battery. Fuel pump is only a month old as well.




1998 Ram 1500 Quad Cab 4x4 360. Bone stock & gonna stay that way since it only tows my 18\' bass boat.
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12-10-2009, 06:49 AM
Post: #3
RE: Now what, rough idle...won't start
ok my truck was doing the same thing minus the dieing part i replaced the up streem o2 censer and the temp censer and the ruff idle and lope went away. then it had now power vary doggy, come to find out the cat was pluged solid as well replaced the cat and its like a hole new truck hop this helps pm me if u have any ?s




2001 ram 1500 sport
<BR>318 v8 auto
<BR>4.56 detroit locker
<BR>35/14.5/16 tsl boggers
<BR>35/15/15 TSLs
<BR>6 suspension
<BR>3 body
<BR>
<BR>1972 IH 1310 1 tone dualy flat bed
2003 ford f 350 crew cab shourt bed 6.0 power stroke
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12-10-2009, 01:30 PM
Post: #4
RE: Now what, rough idle...won't start
That's what I was thinking. It got towed to the shop this morning and I told them to start with the cat. Hopefully I'll hear something soon and that's all it is.




1998 Ram 1500 Quad Cab 4x4 360. Bone stock & gonna stay that way since it only tows my 18\' bass boat.
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12-11-2009, 10:56 AM
Post: #5
RE: *FIXED* Now what, rough idle...won't start
FIXED!!! The guys of the converter had detached completely from the can and had turned partly sideways, almost completely blocking the flow of the exhaust.

$350 for a tow and a new converter, muffler (which was about rusted through...I was peeling off sheets when I was under there doing the shocks), o2 sensors, and some pipes/hangers. That could have been much worse!

I will update when I get to drive it some more and see if that fixed the strange idling after a cold start.




1998 Ram 1500 Quad Cab 4x4 360. Bone stock & gonna stay that way since it only tows my 18\' bass boat.
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12-11-2009, 02:28 PM
Post: #6
RE: *FIXED* Now what, rough idle...won't start
wow, cool that its fixed man, i must be hella lucky I rarely have any problems with my truck
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12-11-2009, 06:47 PM
Post: #7
RE: *FIXED* Now what, rough idle...won't start
Where did you get the block heater? I have been thinking of getting one but not sure on what type to get.




1999 Ram 1500, 408, 6 inch Dick Cepek lift, 2.5\" King shocks, 35\" BFG MT , Weld Stone Crushers, SSBC Billet Twin Piston Calipers, EGR Braided Stainless Steel Lines, Mopar tow hooks, 4.56 gears, Rockkrawler kwick disconnects, DT trac bar, True Trac in front, KB headers, True Duels w/Suppertrapp Mufflers, 47 RE,
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12-12-2009, 09:45 AM (This post was last modified: 12-12-2009 09:45 AM by rich_kildow.)
Post: #8
RE: *FIXED* Now what, rough idle...won't start
I think I paid about $30 for it at Advance Auto, but any store should have them in stock. I think they are pretty universal based on the size of the freeze plug. Another $30 for a battery blanket is a very good investment as well.

The biggest headache is the I couldn't get the block drain plug out, so when I knocked out the freeze plug there was a ton of coolant that spilled out. Just be ready for it.




1998 Ram 1500 Quad Cab 4x4 360. Bone stock & gonna stay that way since it only tows my 18\' bass boat.
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12-12-2009, 02:21 PM
Post: #9
RE: *FIXED* Now what, rough idle...won't start
cool, thanks man.




1999 Ram 1500, 408, 6 inch Dick Cepek lift, 2.5\" King shocks, 35\" BFG MT , Weld Stone Crushers, SSBC Billet Twin Piston Calipers, EGR Braided Stainless Steel Lines, Mopar tow hooks, 4.56 gears, Rockkrawler kwick disconnects, DT trac bar, True Trac in front, KB headers, True Duels w/Suppertrapp Mufflers, 47 RE,
<BR>
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12-12-2009, 07:31 PM
Post: #10
RE: *FIXED* Now what, rough idle...won't start
glad they got it fixed for you i that didnt solve the idle ishue try the temp sencer like i said before good luck




2001 ram 1500 sport
<BR>318 v8 auto
<BR>4.56 detroit locker
<BR>35/14.5/16 tsl boggers
<BR>35/15/15 TSLs
<BR>6 suspension
<BR>3 body
<BR>
<BR>1972 IH 1310 1 tone dualy flat bed
2003 ford f 350 crew cab shourt bed 6.0 power stroke
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