Question about 1989 Ford Mustang

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Engine will run only in cranking position not in run position

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It may be possible you have a worn ignition switch. I have had to replace this type of switch at least a couple of times. You will have to get some of those secure star driver bits to take it off of the column.

JT Radiojunkie

Posted on Sep 01, 2010

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2002 chevy trailblazer and it will not crank or start and the key has gotten stuck in the ignition. I also got a jumpstart and it still didn't start. What is wrong, Please?


Could be a number of thing's , can you do automotive electrical testing ? Do you know if starting is PCM / ECM controlled or BCM controlled ? Do you know what these are ? BCM - body control module , PCM/ECM - engine computer !
Moving the ignition switch to the START position sends a 12-volt signal to the engine control module (ECM)/powertrain control module (PCM) Crank Request circuit. The ECM/PCM verifies that the transmission is in the PARK or NEUTRAL position. With the transmission in Park, voltage flows through the Park/Neutral position switch and feeds the starter relay coil. The PCM then grounds the control circuit of the starter relay. When the starter relay is energized it allows battery positive voltage to the starter solenoid S terminal. On some vehicles the starter will continue to crank the engine with the key released until it starts or the crank command has timed out to prevent excessive heat build up in the starter circuitry or the ECM/PCM receives an engine run flag.
Circuit Description (BCM Controlled)
Moving the ignition to the START position signals the body control module (BCM) that engine crank has been requested. The BCM verifies that theft is not active and sends a serial data message to the powertrain control module (PCM) requesting engine start. The BCM also energizes the RUN/CRANK RELAY. When the RUN/CRANK RELAY switch side closes, and the vehicle is in Park or Neutral or with the clutch is fully depressed, if equipped, supplies voltage to the starter relay coil. The PCM verifies the transmission is in Park or Neutral and the clutch is fully depressed, if equipped. The PCM will then ground the control circuit of the starter relay, closing the switch supplying voltage to the starter solenoid. On some vehicles the starter will continue to crank the engine with the key released until it starts of the crank command has timed out to prevent excessive heat build up in the starter circuitry or the PCM receives an engine run flag.
Do you know what a park neutral safety switch is ? What do you mean key stuck in ignition ? Can't turn the key to off position , or you can an the key will not come out ?
Your best bet , take it to a qualified repair shop .

Apr 04, 2017 | 2002 Chevrolet TrailBlazer

1 Answer

95 Buick Regal will not crank when engine warm wait 20 or so minutes and it will crank what causes this issue.?


Define crank ? Does the engine spin when you turn the key to the start position ? This is referred to as engine cranks . now yours won't start an run ! This is a cranks no start condition ! When it won't start an run check for spark at a coil , your vehicle has three if a V-6 . Pull both plug wires off same coil an crank engine , is there spark ? Yes - No . No spark , ignition module could be bad , crankshaft position sensor , Your best bet would be to take your vehicle to a qualified repair shop .

Sep 26, 2016 | 1995 Buick Regal

1 Answer

Engine won't crank


Engine won't crank ? What happens when you turn the key to the start position ? The engine spins but doesn't start an run or nothing happens . A no crank - no start or engine cranks but won't start an run .

Jul 11, 2016 | Cars & Trucks

1 Answer

Where is the safety switch for a 2006 chevy malibu


Safety switch ? For what ? Park neutral safety switch ,is this what you mean ? Your vehicle not starting ? There is a lot more involved then just that switch.
Circuit Description
For ignition switch power modes refer to Body Control System Description and Operation. Once the ignition is placed in the Run/Crank position, the control circuit of the Run/Crank relay is grounded by the body control module (BCM). With the Run/Crank relay switch closed, battery positive voltage flows through it and on to the park/neutral position (PNP) switch. With the PNP switch in either the Park or Neutral position, battery positive voltage will flow to the starter relay coil supply voltage input terminal of the powertrain control module and the coil side of the starter relay. Placing the ignition in the START position sends a message to the engine control module (ECM)/powertrain control module (PCM) requesting engine start. If the ECM/PCM has determined that the transmission is in Park or Neutral and theft is not active, it will ground the control circuit of the starter relay. Battery positive voltage will then flow through the switch side of the starter relay to the S terminal of the starter solenoid, cranking the engine. For remote vehicle start (RVS) information, refer to Keyless Entry System Description and Operation.

May 25, 2016 | Cars & Trucks

1 Answer

No injector pulse while cranking. The engine only starts with start fluid. With the engine running the engine seems normal.


If you have no pulse at crank position, but do at the run position. Replace the ignition switch.

Dec 09, 2015 | 1996 Honda Accord

1 Answer

If we replaces the feul pump on my 2002 prizm and it still won't run what else can it be?


Did you check the EFI relay an circuit opening relay ? these relays power the fuel pump !
The circuit opening relay provides ignition positive voltage to the fuel pump. The circuit opening relay is controlled by the powertrain control module (PCM) and receives ignition positive voltage from the EFI relay. The PCM monitors the crank signal circuit, terminal C3-11, for voltage when the ignition switch is in the START (engine cranking) position. When the crank signal circuit indicates the engine is cranking the PCM energizes the circuit opening relay. The PCM also energizes the circuit opening relay whenever reference pulses from the crankcase position (CKP) sensor circuit are detected. If the crank signal circuit does NOT indicate the engine is cranking the PCM will energize the circuit opening relay based only upon reference pulses.

Jun 08, 2015 | Cars & Trucks

2 Answers

Van will not start code p0725 what to do


Without knowing make or model Po725 is a Chrysler code for Engine Speed Sensor Circuit
Possible Causes- - Open or shorted CKP sensor circuit condition
- Poor CKP sensor electrical connection
- Check communication error between the ECM and TCM
- Failed CKP Sensor
When is the code detected- The P0725 Codes is triggered when TCM does not receive the engine speed signal from ECM. Chrysler description- The Engine Control Module (ECM) monitors the engine speed through the Crankshaft Position (CKP) sensor with the engine running, and send signal to the Transmission Control Module (TCM

May 09, 2011 | Chrysler Town & Country Cars & Trucks

1 Answer

Just stoped running now will crank no start,no spark @ ignition pack..scaned and it came up..no codes found reading on it..


don't know the circumstance of the concern but i would first check all fuses secondly when switch ignition to the run position u must get check engine in instrument cluster listen for relay energizing fuel pump should run for about five second.if verify look towards the crank position sensor these vehicle that failure and i won't set acode because computer cannnot tell engine speed during cranking at time

Feb 19, 2011 | 2000 Dodge Stratus

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