Mechanics

NON START

1997 Chrysler Cirrus

Computer problem
1997 Chrysler Cirrus 6 cyl Front Wheel Drive 120000 miles

I have a 1997 Cirrus w 150000 miles, while my brotherinlaw was driving the car, it diesd. Ichecked for fuel pressure there was none, I installed in a new fuel pump and then checked the PDC and the fuses and Relays all of these checked ok. When the key is turned on there is no initial power to the fuel pump, I checked for continuity from the PDC to the pump and the circuit is ok. I can jump th fuel pump in the PDC to come one but the car will not start, I just replaced the Distributor and the car stlii won't start, I have 2 issues with the Fuel pump not initially coming on and no spark. I did check the Crankshaft Position sensor for voltage there was none that is why I replace the dist, could this be a PCM problem or the Position sensor? What have I missed?
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Buddy511
June 1, 2009.




Hi buddy511,

Thank you for the donation.

Is this a 2.4L or 2.5L engine?

Did you check if the timing belt is ok?

KHLow2008
Jun 1, 2009.
Timing belt was replaceD about 50 K ago
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Tiny
Buddy511
Jun 1, 2009.
I have given I feel mosyt of what I looked at to repair this car. DO YOU have any more tecnically better answers that what you gave? This is more involved than a Timing belt replacement. The above reply does not address the question I have asked

Tiny
Buddy511
Jun 1, 2009.
You did not answer my question of the engine type.

It is required to gather the correct information to assist you.

KHLow2008
Jun 2, 2009.
Engine 6 cyl v-6

Tiny
Buddy511
Jun 2, 2009.
This is a 2.5 L and there are various test to diagnose the problem and a scan tool is needed for most of the tests.

We shall start with Diagnostic Trouble Codes retrieval.


http://www.2carpros.com/forum/automotive_pictures/192750_MILTest97Cirrus25L_1.jpg



Perform the above test and see if any DTCs are found.

Are you able to crank the engine?

Since sparks are not available and if engine can crank, try the following.

1. Turn ignition off. Disconnect distributor 6-pin connector. Using scan tool in ohmmeter mode, check resistance of ground circuit Black wire (not sensor ground circuit) at distributor 6-pin connector.


http://www.2carpros.com/forum/automotive_pictures/192750_DistributorPin97Cirrus_1.jpg



If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open ground circuit.

NOTE: Next step checks PCM's ability to drive ignition coil driver circuit. An analog voltmeter capable of detecting 0.1 volt is necessary to perform test step.

2. Turn ignition on. Connect an analog voltmeter between ignition coil driver circuit and ground circuit at distributor 6-pin connector. Using scan tool, actuate ignition coil. If voltmeter shows a pulsating deflection, go to next step. If voltmeter does not show a pulsating deflection, go to step 4).

3. Check engine valve timing. If engine valve timing is within specification, replace ignition coil. If engine valve timing is not within specification, repair engine valve timing as necessary.

4. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Using scan tool in ohmmeter mode, check resistance of ignition coil driver circuit Black/Gray wire at distributor 6- pin connector. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground on ignition coil driver circuit.

5. Using external ohmmeter, check resistance of ignition coil driver circuit Black/Gray wire between distributor 6-pin connector and PCM connector terminal No. 11. If resistance is more than 5 ohms, repair open ignition coil driver circuit. If resistance is 5 ohms or less, replace PCM.

KHLow2008
Jun 3, 2009.

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