Information overload on shudder at idle
Thread Starter
|
Junior User
Joined: Jan 2004
Posts: 60
Likes: 0
From: Proctorville, OH
Information overload on shudder at idle
I have been searching the forum since yesterday regarding slight engine shudder and rpm fluctuations at idle, but can't seem to seem filter through all of the information on these topics.
I have a 2003 sport trac 4x4, V6 4L, with about 48K. I am feeling a shudder in the engine while completely stopped, which is more prominent when the engine is cold. Basically, when I come to a stop, I feel an engine shudder that occurs every 5-6 seconds. Once the truck warms up, the shudder is sligt, but you can definately still feel it. I also notice that when the shudder occurs, you can see the radio antenna wobble. Once I start accelerating, the problem goes away, and ride and acceleration are both smooth.
The check engine light has never come on, and the truck has never stalled. But yesterday afternoon, I started the truck (cold start up) and at times while stopped at idle, I thought the truck was going to stall. RPM at idle in drive is about 600 or 700 rpm, while idle in park is around 900 RPM. When the shudder ocurrs, the fluctuation is slight, maybe a 100 RPM or less.
I can't figure out what is going on with the engine. The posts I have reviewed indicate that it could be IAC, MAF, throttle body, a problem with an air leak, or that I may just need to use some fuel injector cleaner or a new fuel filter. What has me stumped though is the fact that most of the posters with idle problems/shudders state that their check engine lights were on, while mine isn't.
If someone could narrow down what I need to check, I would greatly appreciate it. Also, if I need to provide more info, just let me know. Thanks in advance.
I have a 2003 sport trac 4x4, V6 4L, with about 48K. I am feeling a shudder in the engine while completely stopped, which is more prominent when the engine is cold. Basically, when I come to a stop, I feel an engine shudder that occurs every 5-6 seconds. Once the truck warms up, the shudder is sligt, but you can definately still feel it. I also notice that when the shudder occurs, you can see the radio antenna wobble. Once I start accelerating, the problem goes away, and ride and acceleration are both smooth.
The check engine light has never come on, and the truck has never stalled. But yesterday afternoon, I started the truck (cold start up) and at times while stopped at idle, I thought the truck was going to stall. RPM at idle in drive is about 600 or 700 rpm, while idle in park is around 900 RPM. When the shudder ocurrs, the fluctuation is slight, maybe a 100 RPM or less.
I can't figure out what is going on with the engine. The posts I have reviewed indicate that it could be IAC, MAF, throttle body, a problem with an air leak, or that I may just need to use some fuel injector cleaner or a new fuel filter. What has me stumped though is the fact that most of the posters with idle problems/shudders state that their check engine lights were on, while mine isn't.
If someone could narrow down what I need to check, I would greatly appreciate it. Also, if I need to provide more info, just let me know. Thanks in advance.
Thread Starter
|
Junior User
Joined: Jan 2004
Posts: 60
Likes: 0
From: Proctorville, OH
After writing my initial post on this topic, I started thinking that I maybe worrying about nothing. Could someone with a 2003 or similar year Sport Trac please respond and let me know if they ever experience a slight shudder at idle. I was never too concerned about the issued until it felt like the truck was going to stall after that cold start up on Wednesday, but that's the first time its felt like that. I am just concerned that it maybe the benning of a larger problem that I could fend off with some general maintenance.
Looking forward to your advice, and again, thanks in advance.
Looking forward to your advice, and again, thanks in advance.
Thread
Thread Starter
Forum
Replies
Last Post
56/78/92EFFIE
1987 - 1996 F150 & Larger F-Series Trucks
11
Nov 10, 2016 01:53 PM
