I noticed the other day that I have a bit of hesitation problem when my A/C is on. does anyone else have this issue? is it possibly the alternator or a pulley?

any info would be appreciated

('03, 4.0 V6, AT, 84,***miles)

 

are you talking about at idle? if so my idle drops a bit when the a/c compressor kicks on

 

Stab the gas harder, the computer will kill the ac if need be.

 

no Im talking about like 45mph+

I was driving on the highway cruising around 70mph with the a/c on and every once in awhile I would feel like a jerk. it wasnt that bad but it was definetely noticeable to me.

Im just trying to get my truck completely situated before i move

 

Only time I have ever really noticed the ac cycle is at idle. At cruise regardless of rpm never can tell its running.

I think you should check in to some maintence items.

Clean the maf
air filter
plugs
fuel injector cleaner

How is your IAC?

These are thing just off the top of my head.

You may want to reset the computer for grins.

 

kinda sounds like what i was experiencing not to long ago. I always have my windows down, but now that I think about it, that day I had the A/C on. hmm...

 

ive got the 3.slow and i notice some power loss with the a/c on, some times i click it off to pass cars. lol

 

the plugs and wires are new. I have a new cold air intake. and I could clean the maf and dump some injector cleaner in and see what happens

 

Ive never had a/c in my previous rangers. But my newest one does, and now that you mentioned it I remember turning it on one day driving about 50 mph. I had a noticeable decrease in engine power and it felt rather sluggish. I just attributed it to the a/c pump adding resistance to the belt and made me consider getting an under drive pulley. Now i see how much a ud pulley would help unload the engine.
I just figured it was normal but maybe someone on here could say for sure that it is.

 

Does it do it if the defrosters are on? Kinda like a power surge at highway speeds? My 07 does that. Not a major surge but like an "air bubble" per say. I just chalk it up to a sixer trying to pull 4.10's and the a/c..hehehe

 

yup I know exactly what youre talking about

 

im not sure if its normal to feel it at highway speeds. unless im at an idle i dont even notice when my compressor is running.

 

Mine doesn't affect any power while driving, I'm thinking you have a problem with your butt dyno

 

if you dont mind me asking, wtf is a butt dyno?

 

you're braver than me to ask that I wondered, just couldn't bring myself to ask.

 

Its another word for being able to feel a change sitting in the truck, hence butt dyno

 

yeah, that was along the lines of what I was thinking still doesn't answer the question. maybe I should ask my gf that works at ford?

 

I'm having my gf ask a ford tech. Hang tight.

 

alright

 

my truck does it on defrost to.its cause when your heater is on defrost the a/c pump kicks on and off but if your switch is on anything else the pump doesn't come on.

 

Well my gf asked the tech. He can't give a definite answer why it does it. Said there isn't a TSB or recall on that issue either. Go figure....

 

I have 3.0 and anytime the A/C pump kicks on,i lose power,i thought it was normal?

 

alright, maybe it is normal, I dont really know

 

outta of the 2 rangers ive owned every one has done it the ac puts a load on the motor it like puting a big a load in the bed and then trying to race with it lol its not going to happen. i recon its a common ranger thing

 

aight, thanks for the info everyone