Question about 1992 Dodge Dakota

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When accelerating the fan stops blowing air out the vents

At the same time as you accelerate the engine hesitates then goes and it does this until you get up to speed it appears to be a vaccum problem but not to sure

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6ya6ya
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Posted on Jan 02, 2017

  • 321 Answers

SOURCE: 1886 Dodge Ram 1500 Club Cab V8 (318) Vaccum Leak

I experienced almost the exact same thing in a customer's 1997 Dodge Caravan this week except on this one,the A/C would be blowing cold out of the vents,directly at you,and when you put the accellerator down pretty hard,the vents would cease to blow,but you could hear the defroster door flap,and the defrosters blew cold air.Let off the gas pedal,it switches back the way it originally was.Wasn't the customer's complaint,but it did make me wonder.

Posted on Jul 13, 2008

short shadey
  • 421 Answers

SOURCE: The fan when on vent

sounds like your vacuum reservoir may be cracked or a line may be damaged. check for vacuum leaks to the canister and the HVAC system please rate -Jeff

Posted on Sep 12, 2008

  • 48 Answers

SOURCE: hesitation acceleration

have you checked the fuel injector? if enough fuel is not getting through when accelerating it could "choke" causing the hesitation

Posted on Mar 01, 2009

csmock132
  • 4669 Answers

SOURCE: AIR STOPS BLOWING OUT OF VENTS WHEN ACCELERATING

On the side of the intake there is a one way check valve in a vacuum line to the vent controls. Replace it

Posted on Mar 14, 2009

  • 70 Answers

SOURCE: Blower goes from dash vent to defroster

I had a 1994 Dodge Ram. The Red Dodge Ram I had it malfunctioned and my brake became the throttle. I had to put the truck in reverse then park. to stop, after it was out of control at 80 mph a hill slowed us down. Are you sure its not electrical and the curse control is not giving you trouble? Mine had multifunction switch was not working and the headlight switch burned up. I also found out that Audi had problem with the brake becoming the throttle in the 1980s Daimler Chrysler and Audi were German made. I don't think there is an easy answer. I hope you stay safe. Another man is having strange trouble also. I'm sure there are many more people with trouble with the vehicles. I wish Dodge would step up to the truth. and recall their nightmares. I saw many of their 1996 Dodge trucks at their dealers shop with all the electrical pulled out.

Posted on Mar 22, 2009

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1 Answer

A/C fan stops completely (No Air) when accelerating.


The blower is probably running when you are accelerating, but you may not have air coming out the dash vents. If there is a vac leak in the HVAC the vent control will go back to the default setting which is defrost. You may not have enough vac to keep the blend doors on the vent setting when the engine is under load.

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I HAVE A 91 SEDAN DEVILLE.4.9 PORT FUEL INJECTION V8. I HAVE PLENTY OF ACCELERATION FROM STOP TO 20-30MPH. BUT WHEN I AM AT ANY CRUISE SPEED AND STEP ON THE ACCELERATOR IT HESITATES AND DOES NOT...


Sounds like a malfunctioning egr system. Too much egr gasses at once will lean out the air fuel mixture and cause hesitation in an engine. Just my 2 cents.

Jan 20, 2011 | 1991 Cadillac DeVille

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1995 TAHOE BLOWS HOT AIR OUT THE VENTS DURING ACCELERATION


Did you mean the only time it blows hot air is under acceleration?

First thing check the coolant level in the radiator. If coolant is low the first hing to stop working is the heat.

If the coolant level is fine but the coolant is muddy I woulds suspect a plugged heater core. You can try back flushing it by removing both heater hoses (engine cold) and then use a garden hose to flush clean water through the heater core. Do this on both pipes going into the heater core. Keep flushing until the water runs clear. Re attache the the hoses, remove the radiator cap, start the engine, let the engine come up to temp and top off the radiator with straight coolant (to comp for the water in the heater core). You may have to repeat this process several times over several days but you should be able to get it cleared enough to get sufficient heat without having to replace it.

Nov 17, 2010 | 1995 Chevrolet Tahoe

1 Answer

Air stops blowing through the vents when accelerating


u have a loss of vacuum to the ac mode control switch, this switch applies vacuum to diff vacuum motors to move air to diff outlets, dash, floor, defrost etc. either the vacuum line or vacuum resivior at the engine is leaking or the mode control is leaking vacuum.

Aug 14, 2009 | 2003 Lincoln Navigator

1 Answer

AC/heater vent only blow out hot air


that switch controls a vacuum operated door that lets a/c or heat thru.when accelerating,the vacuum in the engine changes so it sound like a vacuum issue.take apart the center stack and there is a vacuum actuator in there connected to the flap door .i have seen those have issues with the metal tab broken away from the plastic that moves it.is the a/c piping cold under the hood where it goes into the heater a/c assembly?the compressor should be cycling on and off and the pressure tested.

Jul 03, 2009 | 1998 Ford Explorer

1 Answer

Air won't blow through dash vents under acceleration


there should be a vacuum line running by the drivrs side shock tower that might be unhook are cracked

Apr 08, 2009 | 1994 Oldsmobile Cutlass Supreme

1 Answer

AC blowing heat and air at same time


Yeah Ron, the flap that covers the heater core is open and when you're moving the air is pushed over the heater core and into the cab your in. Possibly just a vacuum line of that controls said flap. Check all vacuum lines for good proper connection to these flaps because all of them are vacuum actuated.

May 03, 2017 | 1993 Lexus Ls 400

3 Answers

2003 Honda Accord 4 cyl ex Air conditioner Problem


Even under acceleration you should have cold air from vents.Does the air change from the vents to defroster or elsewhere when accelerating? Make sure you have a full charge of refrigerent..Also make sure the engine isnt running hot...

Sep 19, 2008 | 2004 Honda Accord

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