My truck has been acting up.....at idle rpms will drop suddenly, then jump to 1500-2000. Also while driving engine will shut down or sputter. Runs great most of the time, just does this occasionally. Already replaced fuel pump and idle air control valve. Just bought throttle position sensor and about to install. Any help greatly appreciated.

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1997 4 cyl. 2.3l 180,000 miles 5 speed 2wd extra cab. Work truck.

Throttle body cleaning and try cleaning maf sensor

Might also want to keep an eye and ear out for any possible vaccum leaks

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Truck: 2000 Ford Ranger XLT 4.0 4x4 ext cab
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That's a good one
You can use some wd 40 for a easy way to check

How do i clean throttle body? And thanks for the quick responses.

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1997 4 cyl. 2.3l 180,000 miles 5 speed 2wd extra cab. Work truck.

http://www.fordrangerforum.com/how-s...ttle-body.html

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Truck: 2000 Ford Ranger XLT 4.0 4x4 ext cab
My Build Thread
Mod Ideas
Don't Forget to:
Create a Signature
Show your system

Mods: Brush guard|Front Hitch|Expo Roof Rack|Train Horn|Door/Dash/step/Hood Leds|2" lift|Rear Tow Points|On-Board Air System| 22" & 40" LED bar|and More!

Stop throwing parts at it. Do maintenance. Did you change fuel filter? Buy a code reader and check for codes. Don't bother going to AZ to get the codes read. ......... Even if the CEL is not on. Read it for codes. You want to try to catch a pending code. Codes are your friend. Make sure the cel comes on koeo

1999, Reg Cab, 2.5, 5 speed, 145k. (Sent from my DROID BIONIC using FRF App)

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2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).

Thanks for all the good info guys... just joined this forum, it rocks! Going to try cleaning throttle body and replace plugs and wires too, I'll let everyone know how it goes.

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1997 4 cyl. 2.3l 180,000 miles 5 speed 2wd extra cab. Work truck.

Check for codes, check for codes, check for codes. Then check for codes!!!!!!!

1999, Reg Cab, 2.5, 5 speed, 145k. (Sent from my DROID BIONIC using FRF App)

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2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).

Checked for codes, nothing came up

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1997 4 cyl. 2.3l 180,000 miles 5 speed 2wd extra cab. Work truck.

Then proceed doing the other stuff and we can go from there.

as Merc63 said......proceed doing all the tunuep items,,,,,,clean Tb, EGR, MAF....change air filter and make sure the intake is clear of debris, fuel filter, ......replace if needed, plugs, wires, PCV....look for vacuum leaks by spraying starter fluid around......etc.........

Did you change the fuel filter???????..............keep checking for codes with the reader........you are trying to catch a pending code........

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2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).

Changed plugs, wires, air filter, cleaned throttle body and maf sensor. Runs stronger but still has the loping or hunting idle. Rarely happens....every 10 miles or so avg. Starting to piss me off LOL. Probably going to change fuel filter today. Should have done it while I replaced fuel pump. Oh well.

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1997 4 cyl. 2.3l 180,000 miles 5 speed 2wd extra cab. Work truck.

I like this guys idea^^^^^^^^^^^

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2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).

I know on chevys the camshaft position sensor will cause intermittent problems like this. Not saying it is but is a possibility.

You could try this, make sure your mag is functioning properly.

http://easyautodiagnostics.com/ford_...sor_ford_1.php
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