Engine surging problem
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Joined: Jul 2010
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From: Texas
Engine surging problem
I have a 1995 Dodge Ram Sport with a 360cu engine and an A/T. I have been having a problem lately that has been going on for a while. First a little history, a couple years ago, I had a problem where my cat got clogged up and I didn't have the money to fix it right away. I still had to get to work so I drove with the cat clogged for about 2 weeks until I got a grinder and cut the exhaust headers right before they went into the cat. I then ran for a while like that and was having a problem keeping it from dying. It would run fine at an idle on startup and while my foot was on the gas but it wouldn't go back to an idle after I let off or slowed to a stop. The RPMs would drop to about 200 and if it didn't die it would "surge" up to about 1100 RPMs. I put flow masters on it without a cat or O2 and then eventually put an aftermarket dual in dual out cat with an O2 sensor in it. This problem with the surging would go away after a few hundred miles but would always repeat if the battery was disconnected and reset the computer. I took off the battery cable to clean off the terminals last month and now it's doing this problem again. I've driven it over 600 miles and it's still doing it. Usually it would go away within 300-400 miles. I'm pretty much out of ideas here. I posted a YouTube video and will post the link on here. Any input or advice will be appreciated. Thanks
http://www.youtube.com/watch?v=Zxh1quAjSp8
http://www.youtube.com/watch?v=Zxh1quAjSp8
Record Breaker
Joined: Jul 2007
Posts: 1,636
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From: Miracle Valley, AZ
https://dodgeforum.com/forum/2nd-gen...x.html#1059605
Never experienced the surging problem before, but those who have usually get around to the throttle position sensor issue I linked above. It's a fast and cheap way to eliminate that as a possibility and it is very, very common.
Never experienced the surging problem before, but those who have usually get around to the throttle position sensor issue I linked above. It's a fast and cheap way to eliminate that as a possibility and it is very, very common.
Retired Moderator - RIP
Joined: May 2008
Posts: 18,729
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From: NH
I have a 1995 Dodge Ram Sport with a 360cu engine and an A/T. I have been having a problem lately that has been going on for a while. First a little history, a couple years ago, I had a problem where my cat got clogged up and I didn't have the money to fix it right away. I still had to get to work so I drove with the cat clogged for about 2 weeks until I got a grinder and cut the exhaust headers right before they went into the cat. I then ran for a while like that and was having a problem keeping it from dying. It would run fine at an idle on startup and while my foot was on the gas but it wouldn't go back to an idle after I let off or slowed to a stop. The RPMs would drop to about 200 and if it didn't die it would "surge" up to about 1100 RPMs. I put flow masters on it without a cat or O2 and then eventually put an aftermarket dual in dual out cat with an O2 sensor in it. This problem with the surging would go away after a few hundred miles but would always repeat if the battery was disconnected and reset the computer. I took off the battery cable to clean off the terminals last month and now it's doing this problem again. I've driven it over 600 miles and it's still doing it. Usually it would go away within 300-400 miles. I'm pretty much out of ideas here. I posted a YouTube video and will post the link on here. Any input or advice will be appreciated. Thanks
http://www.youtube.com/watch?v=Zxh1quAjSp8
http://www.youtube.com/watch?v=Zxh1quAjSp8
You've done everything except for address this issue. https://dodgeforum.com/forum/2nd-gen...um-thread.html
I wouldn't doubt your new cat is getting clogged. But yes, get a Haynes and check the TPS and try cleaning the IAC. https://dodgeforum.com/forum/dodge-r...n-the-iac.html
Record Breaker
Joined: Dec 2008
Posts: 1,200
Likes: 1
From: Claremont NC
https://dodgeforum.com/forum/2nd-gen...x.html#1059605
Never experienced the surging problem before, but those who have usually get around to the throttle position sensor issue I linked above. It's a fast and cheap way to eliminate that as a possibility and it is very, very common.
Never experienced the surging problem before, but those who have usually get around to the throttle position sensor issue I linked above. It's a fast and cheap way to eliminate that as a possibility and it is very, very common.
Hall Of Fame
Joined: Jul 2006
Posts: 12,204
Likes: 10
From: Gainesville, Ga.
surging idle is usually caused by bad TPS. about $40 at any parts store.
IAC also has control over idle speed, but it generally either works or it doesn't and when it doesn't work the truck will stall at idle. sometimes its hard to figure out which one of these is bad. that's when i usually get PO'd and replace them both.
IAC also has control over idle speed, but it generally either works or it doesn't and when it doesn't work the truck will stall at idle. sometimes its hard to figure out which one of these is bad. that's when i usually get PO'd and replace them both.