Question about 1999 Dodge Ram

1 Answer

Idle problem lopes b/t 600 and 800 rpm at idle not all the time but frequently i have already replaced the iac,map,and tps sensors ive checked for vacuum leaks and all hoses seem to be good with no leaks,one other problem i have is the ac switches to heater when i step on break ac control switches are vac opperated already changed check valve since this might be a vacuum issue i don't know if its related to the idle issue, also have high fuel consumtion around town alot less on highway

Posted by on

  • Mickey Butler
    Mickey Butler Jan 02, 2014

    tryed spraying starter fluid no results i'll try carb cleaner and see if that will help. just bought the truck the previous owner changed the plugs and filter i changed the distributor cap,motor runs real strong except this issue i'm a pretty good tree machnic myself but this ones got me stumped thanks for the tips gabe any body else got any ideas

  • Mickey Butler
    Mickey Butler Jan 02, 2014

    were you talking about the power brake booster, i know there is a vacuum storage cannister some where but i have not located it yet any one know where that is

×

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 10 Answers

I know you said you checked vacuum. Have you tried doing a test with carb cleaner? If not spray it around all vacuum hoses. Sometimes a small leak can hide. If your idle at any point changes when you're spraying around it could be from a small leak you couldn't see easily.

If that doesnt work you may want to try your vacuum booster (if the truck has one) Could be that that is going wrong.

Additionally, when is the last time you had a standard tune up? Plugs wires (if it doesnt have the coil packs directly on top of the plugs like the later dodges) and an air filter.

Hope this little bit of shade tree mechanic BS helps lol.

Gabe

Posted on Dec 31, 2013

Ad

3 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad
  • 295 Answers

SOURCE: 1997 DODGE RAM 1500 360 VERY LOW IDLE

I think you have ruled out the engine with all the parts you have replace. The transmission torque convertor is in lock up mode all the time. The engine is having to hard of a time to stay at the normal idle. The over drive clutches and soleniod are most likely damaged in the transmission.
I think you should take the vehicle to a trasnmission shop , The can check the torque convetror soleniods and pressure control soleniod.

The oil light coming on bothers me. I know you have the rebuilt engine in the vehicle but I think the oil pump in the engine is starting to go out or could be weak. The lower bearings connected to the crank shaft might be starting to leak. Have the oil pressure checked .

Posted on Mar 19, 2009

emissionwiz
  • 76109 Answers

SOURCE: Engine died and won't restart. Turns over, has

U need to check the computer control system for fault codes, that is the 1st step in diagnosing the problem in any 1996 up model year, so either rent a code reader or buy one from any local auto parts store, they rubn about $40 for a basic code reader scanner.

Posted on Sep 21, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

99 Isuzu Trooper RPM keeps racing! These sensors have been replaced; TPS, IAC, CTS, no Vac. leak. The RPM still races at normal operating temp. What sensor tells the computer the RPM of the engine?


redux1
after many posts, we see only 1 clue engine
MAF
the 6ve1 engine
that told me what engines. one word, mAF.
if just one MAF (no map)
so all air leaks are slow rpm caused by lean
but if pcm goes in to limp home mode.
it car race, due to loss of IAC controls
the engine does not run like you think
the CMP/Cke sensors,
if they die , the engine dies.
if they misfire, the engine misfires and slows and stalls'

are you using good scan tools real that see all factory codes. p1, p2xxx?
not just fedcodes, p0xxx?

the 3.5v v6 has a MAP and a MAF BOTH.
on some engines like this, the Map is for idle
and the mAF of for fast.
fooling many machanics
dual mode systems,
the MAF sensor is not very accurate at idle
is the reason for the dual mod
so vacuum leaks, I SAY.

Mar 01, 2017 | Isuzu Cars & Trucks

2 Answers

2003 kia Sedona at a cold start the rpm runs very high and it will take over 2 minutes before its slowly starts to drop.


TPS, IAC, EGR, MAF, MAP. all sensors all having to do with the way the car starts and runs. Does it idle fine after warm up or does the idle jump up and down, or does it go so low sometimes, you think it's going to die on you? I'd look at the TPS and IAC 1st. Go to autozone or advanced auto parts and have then plug the OBD II code reader into your ECU and see if they can pull a code.

Nov 01, 2013 | Cars & Trucks

1 Answer

Erratic idle behavior


Could be IAC sensor or TPS sensor[RPM].

Jun 12, 2013 | 1999 Chevrolet Malibu

2 Answers

Stalls while in drive with foot on brake , changed MAP Sensor, Crank Shaft Sensor , Distributor, Fuel Pump, Fuel Filter , have ran out of ideas


I would check the IAC motor or idle air control motor, heres a little info.about the part.Stratus Sedan, 1999-2005 Idle Air Control Motor

Print


Description & Operation

Not for Dodge Stratus Sedan
The idle air control motor (IAC) attaches to the throttle body. It is an electric stepper motor. The PCM adjusts engine idle speed through the idle air control motor to compensate for engine load, coolant temperature or barometric pressure changes. The throttle body has an air bypass passage that provides air for the engine during closed throttle idle. The idle air control motor pintle protrudes into the air bypass passage and regulates airflow through it.
The PCM adjusts engine idle speed by moving the IAC motor pintle in and out of the bypass passage. The adjustments are based on inputs the PCM receives. The inputs are from the throttle position sensor, crankshaft position sensor, coolant temperature sensor, MAP sensor, vehicle speed sensor and various switch operations (brake, park/neutral, air conditioning).

0996b43f8020234f.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig.

Not for Dodge Stratus Sedan
When engine rpm is above idle speed, the IAC is used for the following functions:


Off-idle dashpot Deceleration air flow control A/C compressor load control (also opens the passage slightly before the compressor is engaged so that the engine rpm does not dip down when the compressor engages)
The idle air control motor (IAC) attaches to the throttle body. It is an electric stepper motor. The PCM adjusts engine idle speed through the idle air control motor to compensate for engine load, coolant temperature or barometric pressure changes. The throttle body has an air bypass passage that provides air for the engine during closed throttle idle. The idle air control motor pintle protrudes into the air bypass passage and regulates airflow through it.
The PCM adjusts engine idle speed by moving the IAC motor pintle in and out of the bypass passage. The adjustments are based on inputs the PCM receives. The inputs are from the throttle position sensor, crankshaft position sensor, coolant temperature sensor, MAP sensor, vehicle speed sensor and various switch operations (brake, park/neutral, air conditioning).

21180_cdia_g257.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig.

When engine rpm is above idle speed, the IAC is used for the following functions:


Off-idle dashpot Deceleration air flow control A/C compressor load control (also opens the passage slightly before the compressor is engaged so that the engine rpm does not dip down when the compressor engages)
Target Idle
Target idle is determined by the following inputs:


Gear position ECT Sensor Battery voltage Ambient/Battery Temperature Sensor VSS TPS MAP Sensor
Target idle is determined by the following inputs:


Gear position ECT Sensor Battery voltage Ambient/Battery Temperature Sensor VSS TPS MAP Sensor


Removal & Installation

  1. Disconnect the negative battery cable.
  2. Disconnect the IAC electrical connector.
  3. Remove the IAC mounting screws.
  4. Remove the IAC.

To Install:
  1. Install the IAC to the throttle body.
  2. Tighten mounting screws to 5.1 Nm (45 inch lbs.) torque.
  3. Attach electrical connector to the IAC.
  4. Connect the negative battery cable.

    0996b43f80202350.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig.


  1. Disconnect the negative battery cable.
  2. Disconnect the IAC electrical connector.
  3. Remove the IAC mounting screws.
  4. Remove the IAC.

To Install:
  1. Install the IAC to the throttle body.
  2. Tighten mounting screws to 5.1 Nm (45 inch lbs.) torque.
  3. Attach electrical connector to the IAC.
  4. Connect the negative battery cable.

May 11, 2012 | 2000 Chrysler Cirrus

1 Answer

1996 dodge caravan 2.4 code p1294


on dodge motors
fitted a lot of parts and still no better

the fault code clears and comes back as a intermittent problem

could be electrical voltage drop off or heat related failure

i wonder if your 02 sensor ,the catalytic converter
or other related sensors
are causing the fault to come back
if needed .....fit a new air filter...

how the test is determined

P1294-TARGET IDLE NOT REACHED 3.3L/3.8L
When Monitored and Set Condition:
P1294-TARGET IDLE NOT REACHED 3.3L/3.8L
When Monitored: With the engine idling and the transmission in drive, if automatic.
There must not be a MAP sensor trouble code or a Throttle Position Sensor trouble code.
Set Condition: The engine idle is not within 200 rpm above or 100 rpm below the target
idle for 40 seconds. One trip fault.

POSSIBLE CAUSES
INTERMITTENT CONDITION
IAC MOTOR PASSAGES
VACUUM LEAKS
AIR INDUCTION SYSTEM
THROTTLE BODY AND THROTTLE LINKAGE
TEST ACTION APPLICABILITY
images-trsfwikau0d5dnlwn4zno1ix-3-0.jpg

Mar 01, 2017 | Cars & Trucks

1 Answer

High idle


Clean the throttle body inside to make sure the throttle plate closes properly. also clean the mass air flow sensor cross wires inside it's bore. If there are no vacuum leaks, this may help

Jun 06, 2009 | 1994 Pontiac Firebird

2 Answers

Loses the power and starts stalling


The IAC valve requires resetting .
First locate the IAC valve located on the side of the throttle body and has 4 wires going to it .Procedure is as follows
Ignition key on ,unplug the IAC ,turn key off ,reconnect the IAC .do this 3-4 times .restart the car and hold the rpm at 2000 rpm and slowly lower until it idles by it self .

Jan 17, 2009 | 2000 Daewoo Nubira

1 Answer

Loping and high idle


You are really onto it! Either the TPS or the cable from the peddle. Do check the cable first. Frankster016

Oct 26, 2008 | 1990 Toyota Cressida

Not finding what you are looking for?
1999 Dodge Ram Logo

83 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dodge Experts

yadayada
yadayada

Level 3 Expert

76109 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8269 Answers

Are you a Dodge Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...