I have 98 ford ranger 4 cylinder Automatic
163k miles runs good but for some weird reason it's stalls sometimes and I noticed it happens more when I have the ac on I have no idea what's wrong with it or why it's doing this I just bought it so I'm still getting to know how it runs any advice would be great

Thank you :-)

You most likely need to clean or replace the idle air control valve. Is the check engine light on?

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2014 F150 xl 3.7 6 speed auto.

No it's not no lights are on at all

Not sure why it's worse with the a/c on, but I had similar problems in the past that went away after changing the fuel filter.

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Yetti-
1998 Ranger XLT
2.3L 5 5peed manual
248,000 Miles
21 mpg
Craigslist RV top

Stalling and failing idle would be worse with the A/C on because the A/C uses the compressor, which is another load on the engine. The IAC is instructed to 'bump up the idle speed' when the computer gets the signal the compressor is going to engage. The bump helps handle the load without stalling. If the IAC is gummy, or slow to respond, or stuck, the load may kill the engine idle.
tom

I change my fuel filter and my plugs and wires and now my truck is hesitating to start

No there are no lights on

When I first bought my Ranger, I joined this forum. The wealth of knowledge is unbelievable!

Here is a pic of my IAC before and after cleaning. Our engines are slightly different, but this component is almost identical.

Before:



image-2475179394.jpg




After:



image-3376915136.jpg





Q-tips and the appropriate cleaner will do wonders for your truck. Your general owner doesn't realize the importance of these items and NEVER clean them.

It makes a difference!

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2005 2.3L XL 5SOD 3.73 K&N
KYB Shocks Husky Toolbox
Alpine / Rockford Fosgate Sound

"Ask me about my AC Vent fix!"