Question about Dodge Grand Caravan

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99 Dodge Grand Caravan with code PO171

Has a 3.3L. Car was running fine. on way home about 14 miles out, van started out from a stop sign with now power, not shifting right until it got up to 30 mph and then it cleared up and had power until i had to stop or slow down. Got a code of PO171 and I am not sure where to start. any advice will be great. thanks

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  • 64 Answers

You could have a fuel delivery problem. I would recommend to start by checking fuel pressure. Fuel injected cars are very fuel pressure sensitive. Fuel pressure is very important and must be within specifications! But if the pressure is low, it does not mean the pump is bad. A plugged fuel filter, a pinched line, and low voltage at the pump can contribute to low fuel pressure. All three must be check before replacing the pump! You can get a fuel pressure gage at a local auto parts store for cheap. Fuel pressure testing is frequently overlooked but it is one of the common causes of poor performance. The test procedure must include testing that will insure normal fuel pressure under all operating conditions. Key Factors 1. Fuel demands are low at idle. 2. Wide open throttle at high engine revs uses the most fuel. 3. Fuel pressure must be reduced when manifold vacuum is high. Vacuum pulls fuel out of the injector causing it to deliver too much fuel if the pressure remains high. Manifold vacuum is used to open the pressure regulator at a lower pressure when vacuum is high. A good way to check your fuel pump is to run an amp test on the fuel pump while it is running or while battery voltage is being applied ot it (turning the key on, cranking your vehicle or even when your engine is running. The amount of amps your fuel pump will pull will depend on how much fuel pressure your fuel pump should supply to your fuel rail. A good rule of rule of thumb for this test is as follows: 14 to 15 psi 3 to 4 amps 30 to 45 psi 4 to 7 amps 45 to 50 psi 7 to 8 amps 50 to 70 psi 8 to 12 amps

Posted on Aug 07, 2012

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6 Suggested Answers

6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

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Sgt Fluffy
  • 157 Answers

SOURCE: 2002 Dodge caravan, down shifting hard.

The PO562 is merely a low voltage code. Tranny codes are 700's. It is possible your brakes are dragging and that's forcing a downshift early; hoist it up and check for freewheeling, but I would take it to a reputable tranny shop. Believe it or not, you can ask your Mopar dealer for a recomendation; most dealers do sublet some of their tranny jobs out to independents, esp their used cars. Keep the faith.

Posted on Feb 04, 2009

localwonder
  • 6784 Answers

SOURCE: transmmition problem

Hi.this is caused by lag that is actually occurring within the TCM(transmission control module) and solenoid connection.

The TCM and solenoids work together with the actual shifter inside the van on the steering assembly. when you shift to drive or reverse, the signal is relayed to the TCM and the TCM relays the signal ot the shift solenoid that is located inside the transmission pan. this solenoid , then, initiates the shift action. If there is a malfunction in the TCM or shift solenoid, it will slip or lag while shifting. this is what you are experiencing at this time.

I recommend testing the TCM and shift solenoids for there operational values. I would also check the transmission fluid level as well. Low fluid level can cause gear slippage or lag as well.

PLease rate and god bless:)

Posted on Apr 24, 2009

  • 2 Answers

SOURCE: won't shift out of low,speedometer doesn't work

see my comments, not 100% sure that it was the out put speed censor or not, but after reconnecting the wires to a new censor and reconnecting the battery and clearing codes it worked. connection was not clipped may have been loose

Posted on Oct 07, 2008

  • 76 Answers

SOURCE: 2001 dodge grand caravan stalls

Glad too hear your making progress, sounds like your dealing with a reasonable shop too. For future reference, take notes when your vehicle acts up. The more information you cn give your technician the easier it is to be fixed. Good luck, let me know how you make out.

R

Posted on Feb 21, 2009

elkoolarrow
  • 156 Answers

SOURCE: I have a 2004 VW Passat the engine light came on had it diagnosed the code is P0322 what does it mean and how is it fixed? Thanks

Symptoms- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of Power
- The engine may be harder to start
- The engine may stumble or stallPossible causes- Ignition/Distributor engine speed sensor harness circuit is open or shorted
- Ignition/Distributor engine speed sensor poor electrical connection
- Faulty Ignition/Distributor engine speed sensor
- Faulty Crankshaft Position sensor
- Low battery charge
- Faulty Engine Control Module (ECM)When is the code detected?The P0322 code is triggered when the Engine Control Module (ECM) detects no signal.P0322 VOLKSWAGEN DescriptionIgnition failure sensor is used to check whether the spark ignition is occurred correctly or not and also used to tachometer drive. The sensor monitors the voltage difference between a resistance which is on the battery circuit for ignition coil. When the ignition coil works properly, the electric current through the resistance is detected as voltage drop. This is confirmed for every ignition event with the crankshaft sensor and the camshaft sensor. If ECM detects a malfunction, no ignition is possible, so the engine would not start. If there is no ignition signal for a predetermined cycle for one or two ignition coils, an ignition coil circuit failure exists.

Posted on Nov 12, 2011

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