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  #1  
Old 09-15-2010, 02:45 AM
ecogenie ecogenie is offline
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Join Date: Jul 2010
Posts: 83
Default Racing Engine at Stop

Have been on here before with this problem but what I thought was corrected was not. When coming to a stop with foot on brakes my engine races. I must take it out of gear before coming to a complete stop or I will crash into whatever is in front of me. It races for a few seconds or more then stops racing. If anyone knows what to do about this it sure would be appreciated if I could hear from you before I get myself into trouble. Lost my job so I need all the help I can get. Thanks!!!
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  #2  
Old 09-15-2010, 08:42 AM
Magnis Magnis is offline
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Default Re: Racing Engine at Stop

3 Things that I did that I believe corrected this issue.

1) I cleaned the throttle body with throttle body cleaner
Note: Throttle body cleaner not Carb Cleaner. There is a difference.

2) I replaced the IAC (Idle Air Control).
This device while at idle opens up and allows a set amount of air into the motor. If it opens up too far it will cause the motor to get too much air and cause it to revv up to 3,000RPMs as I have noticed.

3) I replaced the TPS (Throttle Position Sensor).

Something else to think about, does it feel like it's had a drastic loss of power on take off?
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  #3  
Old 09-15-2010, 09:10 AM
modelageek modelageek is offline
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Default Re: Racing Engine at Stop

Quote:
Originally Posted by Magnis View Post
3 Things that I did that I believe corrected this issue.

1) I cleaned the throttle body with throttle body cleaner
Note: Throttle body cleaner not Carb Cleaner. There is a difference.

2) I replaced the IAC (Idle Air Control).
This device while at idle opens up and allows a set amount of air into the motor. If it opens up too far it will cause the motor to get too much air and cause it to revv up to 3,000RPMs as I have noticed.

3) I replaced the TPS (Throttle Position Sensor).

Something else to think about, does it feel like it's had a drastic loss of power on take off?
+1 I also would clean the MAF and check the ect sensor
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2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
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  #4  
Old 09-16-2010, 03:43 AM
ecogenie ecogenie is offline
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Default Re: Racing Engine at Stop

Quote:
Originally Posted by Magnis View Post
3 Things that I did that I believe corrected this issue.

1) I cleaned the throttle body with throttle body cleaner
Note: Throttle body cleaner not Carb Cleaner. There is a difference.

2) I replaced the IAC (Idle Air Control).
This device while at idle opens up and allows a set amount of air into the motor. If it opens up too far it will cause the motor to get too much air and cause it to revv up to 3,000RPMs as I have noticed.

3) I replaced the TPS (Throttle Position Sensor).

Something else to think about, does it feel like it's had a drastic loss of power on take off?
I will change out what you say and yes the power is not there on take off. What is this from? Thanks!!!
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  #5  
Old 09-16-2010, 05:03 AM
Magnis Magnis is offline
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Default Re: Racing Engine at Stop

With no power on take off, it sounds to me like a bad IAC (Idle Air Control).
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  #6  
Old 09-17-2010, 01:10 AM
ecogenie ecogenie is offline
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Default Re: Racing Engine at Stop

Quote:
Originally Posted by ecogenie View Post
I will change out what you say and yes the power is not there on take off. What is this from? Thanks!!!
I went to auto zone and spoke with the salesperson there. He told me to first try to clean the IAC with throttle body cleaner. Said that there is a spring inside that gets caked up with carbon and gets so where it stiffens up to where it does not function as it should. Said to clean it out real good before buying a $42.00 part. So without a job I went the cheapest way. I will do that this weekend and keep my fingers crossed that it will correct this problem. If not I will have to get the part. Thanks so much for all the help!!!
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  #7  
Old 09-18-2010, 04:53 PM
tileguy tileguy is offline
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Posts: 11
Question Re: Racing Engine at Stop

Alot of salvaged cars & trucks have new parts for cheap. Try your part + A, TPS, and spend $20, Make sure the engines are the same!
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  #8  
Old 06-20-2011, 07:57 PM
Lone.Ranger Lone.Ranger is offline
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Default Re: Racing Engine at Stop

Had same issue that seemed to start about two weeks ago - highway speed, then at end of ramp, engine wants to race up to 3000 RPM for a few seconds, then plunges to around 650-700, almost stalling the engine.

First, cleaned the MAF with MAF cleaner; re-assembled - test, same thing.

Next was the Idle Air Control (IAC); rmoved it and noticed visible soot; cleaned with MAF cleaner thoroughly and also the intake opening.

First crank - nothing; second crank fired up and was idling perfectly. Highway to ramp perfect.

Still have a serious hum when backing off the accelerator and have checked for a good seal on the MAF, K&N air filter, & IAC...sound seems to come from passenger side near the front where the air filter is; but can't figure out what's out of place.
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  #9  
Old 06-20-2011, 08:00 PM
sgtsandman sgtsandman is offline
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Default Re: Racing Engine at Stop

See if one of the resonator tubes off the intake has been dislodged or something.
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  #10  
Old 06-21-2011, 03:09 AM
ecogenie ecogenie is offline
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Default Re: Racing Engine at Stop

Quote:
Originally Posted by ecogenie View Post
Have been on here before with this problem but what I thought was corrected was not. When coming to a stop with foot on brakes my engine races. I must take it out of gear before coming to a complete stop or I will crash into whatever is in front of me. It races for a few seconds or more then stops racing. If anyone knows what to do about this it sure would be appreciated if I could hear from you before I get myself into trouble. Lost my job so I need all the help I can get. Thanks!!!
Problem found and fixed with a BB in vacuum hose. "Cheap fix". Some part up next to the drivers side of the firewall I took the hose off and put a BB in and have been driving like this for about four months now with no more problems.
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  #11  
Old 06-22-2011, 06:49 PM
Magnis Magnis is offline
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Default Re: Racing Engine at Stop

Which hose was it?
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  #12  
Old 06-23-2011, 03:33 AM
ecogenie ecogenie is offline
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Default Re: Racing Engine at Stop

There is a hose up next to the drivers side firewall that connects to I want to say EGR valve but not sure if I am using the correct name of the part. It has like a round disc looking part and just on top of that the hose connects. You pull that hose off and put a BB on top of the pipe and then put the hose back on. The hole is smaller than the BB so it plugs it up. Guess if you have the money you can just replace the part. If I remember I will try and take a picture of the part and put it one here for you. Might want to remind me if I forget.
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  #13  
Old 06-23-2011, 06:17 AM
Magnis Magnis is offline
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Default Re: Racing Engine at Stop


you mean the hose that goes to the top of this device?

If so than the diaphragm is probably shot.

Last edited by Magnis; 06-23-2011 at 09:53 PM.
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  #14  
Old 06-24-2011, 02:15 AM
ecogenie ecogenie is offline
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Default Re: Racing Engine at Stop

Quote:
Originally Posted by Magnis View Post

you mean the hose that goes to the top of this device?

If so than the diaphragm is probably shot.
This is it!!! I just placed a BB in the hole and my problems stopped happening. Anyone that don't have lots of money to buy the part this is a cheap fix until they can afford the part.
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  #15  
Old 06-24-2011, 10:46 AM
Magnis Magnis is offline
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Default Re: Racing Engine at Stop

It's actually about $50 at autozone and Oriley's.
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