E150 Idle troubles

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Jun 11, 2004 | 02:21 PM

#16

nightowl_52

Elder User

Joined: Nov 2002

Posts: 543

Likes: 1

From: South East Texas

My problem was the idle jumping up once the temp gauge got to between the "O" and "R" in normal and would send me down the street doing 40. I need to change out the TPS and clean the IAC, but in the meantime I just unplugged the IAC and turned up the idle screw a hair.
No check engine light, and runs fine. Don't forget to pull a cable off the battery before working on either.

Jun 11, 2004 | 06:26 PM

#17

pfogle

Lead Driver

Joined: Feb 2003

Posts: 8,140

Likes: 4

From: Oak Harbor, OH

You really have to pull the TB to get at the TPS, just remember there is coolant in the TB so make sure you clamp the lines before removing it.

Jun 11, 2004 | 07:44 PM

#18

mhg

Fleet Mechanic

Joined: Sep 2003

Posts: 1,279

Likes: 1

From: savannah,ga

Remember to TEST before throwing money at something
pull the codes
then check the suspect parts with a digital VOM (volt ohm meter)
all parts are good until proven guilty

Jun 11, 2004 | 09:22 PM

#19

Valkyr

New User

Joined: Jun 2004

Posts: 7

Likes: 0

Quote:

Originally Posted by pfogle

You really have to pull the TB to get at the TPS, just remember there is coolant in the TB so make sure you clamp the lines before removing it.

That's what I was afraid of - not fun to do on a van!! When you say 'clamp the lines', can I plug them (i.e. cork)? EGR valve looks just as bad to get at.

Pulled codes and counted the 'check engine' light - came up 11's for ign on/eng off.

Don't mean to hijack this thread - but the problem was just like mine - erratic idle - sorry.

Fuggrur, how are you doing with your situation? Any progress?

Joe V.

Jun 12, 2004 | 02:01 PM

#20

Bartat

New User

Joined: May 2004

Posts: 22

Likes: 0

I had same problem, idle speed was very high 1800rpm or so, very poor gear changes (it thumped into gear at low speeds), been like it for a while. Changed TPS on thursday, it now runs like a dream with very smooth gear changes at any speed even got kick down now and idles real good

good luck

steve

Jun 14, 2004 | 12:34 PM

#21

Babin

Junior User

Joined: Apr 2004

Posts: 74

Likes: 0

My van runs ok but idle is not stable... When I look at the belt and tentionner while its running, I can see the tentionner shaking. Is it normal that the tension varies? Cleaned the IAC but nothing changed... What is the TPS?

Thanks

Jun 14, 2004 | 02:10 PM

#22

cpt97M3

New User

Joined: Jun 2004

Posts: 12

Likes: 0

Quote:

Originally Posted by Babin

TPS = Throttle Position Sensor. It tells the computer (ECM) how much and how fast the throttle is open. Evidently you have to remove the throttle body to get to the TPS. It's not a big part, smaller than the ICV.

Chris