Mechanics

CAR WILL START THE WILL SHUT OFF

1996 Dodge Stratus

Electrical problem
1996 Dodge Stratus 4 cyl Two Wheel Drive Automatic 280000 miles

My 96 Stratus will start in the morning and run fine but once its gets to normal operating tempeture will shut off and and the cruise control light will come on I check the fuel pressure and irs around 55 psi and when I shut off the engine the pressure only drops about 10 psi I'm in the process of chainging the fuel filter any feed back will be appreciiated

NOTE back on may of this year some one posted a similar problem before but he did not get any answer

Electrical problem
1998 Dodge Stratus 6 cyl Two Wheel Drive Automatic 199999 miles

When I am driving after a few miles it seems as though the temperature goes up and " my cruise control light" comes on and it turns off. Then it wont start for a few minutes
Avatar
Elgastador
September 4, 2010.



Hi elgastador. Welcome to the forum. Has the Check Engine light turned on when the engine stalls? If so, there is a diagnostic fault code stored in the Engine Computer. That code will lead you to the circuit or system with the problem, not necessarily the defective part.

A common cause of your symptom is a failing camshaft position sensor. They often become heat-sensitive. A possible clue is the tachometer, (if your car has one), will quit as soon as the engine dies. Other than diesel truck engines, you will never solve a running problem on a Chrysler product by replacing the fuel filter. They actually pass the largest volume of fuel when coasting.

Caradiodoc

Caradiodoc
Sep 4, 2010.
There is no codes, yesterday I replaced the fuel filter (what a pain it took me almost 4 hours) today I will tested I will keep an aye on the tach to see if the cranlk sensor is bad thanks for the tip and for answering so quick.

Tiny
Elgastador
Sep 5, 2010.
Hi Doc

The cam position sensor cables were in very bad shape and full of oil I went ahead and change but in the way back from the inspection the the car dies couple of times I still not getting any codes, I was wondering if the crank position will make it die like that?

Tiny
Elgastador
Sep 7, 2010.
Yup, the crankshaft position sensor is just as important, but it will normally set a fault code. Another approach would be to find someone with a scanner with a record / playback function. I use the Chrysler DRB3. You drive the car with the scanner attached and viewing sensor data. When the problem occurs, you press the " record" button. Since the information passes through the scanner's memory, the recording actually starts a few seconds before you press the button. Later, you can play the information back frame by frame while watching for a glitch or dropout.

Many aftermarket scanners don't have the record feature but you can still view the sensor and switch information while you're trying to restart the stalled engine. The main thing to look at is the automatic shutdown (ASD) relay. It sends power to the coil(s), injectors, alternator field, oxygen sensor heaters, and fuel pump or pump relay. The Engine Computer turns it on when it gets the pulses from the cam and crank sensors. If the scanners shows " off" for the ASD relay during cranking, suspect those two sensors. If it shows " on" during cranking, you'll have to troubleshoot the individual spark. Injector, or fuel supply systems. Fuel pumps rarely quit while running, (except on GM products), and there isn't much that will cause all of the injectors to quit at once. That leaves loss of spark as the most common cause of engine stalling after the sensors.

Caradiodoc

Caradiodoc
Sep 7, 2010.
Hi Doc

Once againg thanks for the feedback so quick, the scanner I have does not have the record option, but I may be able to get one at school, why will the car losse spark? How do I check the crank position sensor? Should I go ahead and replace the crank sensor?

Tiny
Elgastador
Sep 7, 2010.
First determine if the ASD relay is turning on during cranking. If it is, the sensors are working and there's no need to look at them. That's when you have to determine if it's spark or fuel that's missing. You mentioned earlier that fuel pressure wasn't dropping much so that would leave spark. Coil packs do fail intermittently but it is also possible to have a corroded splice or other break in the wire feeding the coil and injectors.

There could be a failure in the computer too, either the high-current driver circuits for the coil or injectors but Chrysler has relatively little computer trouble, especially compared to GM. The computer could be failing to turn on the ASD relay, but that driver circuit switches very low current so failure isn't likely.

Caradiodoc

Caradiodoc
Sep 7, 2010.
Hi Doc
One thing I forgot to mention earlier was, this vehicle did not have a thermostat, I started having this problem when I installed the thermostat, do you think that temperature could be a related to this problem? How can I check the asd relay without a scanner?

Tiny
Elgastador
Sep 7, 2010.
The missing thermostat shouldn't cause engine shutdown due to sensor readings / computer programming, but it could indirectly be related if a cam or crank sensor is beginning to fail due to becoming heat-sensitive. Those failures will often allow the engine to restart after it has cooled down for an hour or so.

There's two easy ways to check the ASD relay operation. One is to pop its cover off and watch the movable contact while a helper cranks the engine. If you have a digital voltmeter or a test light, you can prop it up by the windshield so you can see it from inside the car during engine cranking, and back-probe a connector for the coil pack, injector harness, or my favorite, connect the probe with a clip lead to either of the small terminals on the back of the alternator if you can reach them. All of those points should have 12 volts for the first one second after turning on the ignition switch, and again during engine rotation, (cranking or running). If voltage is present for that first second, that verifies the Engine Computer has control over the ASD relay and the relay is switching the voltage to that circuit.

The wire is dark green with an orange stripe. It is also used for the power feed to the distributor on the six cylinder engines.

If you have voltage during cranking at the alternator or injectors, but you still don't have spark at the plug wires, double-check for voltage at the coil too. If it's missing there, there has to be a break in the wire because all of those items are spliced together. A couple of people have found that splice to be corroded causing an intermittent connection to just the coil. This isn't so serious for an intermittent stalling, but if you're working on a no-start condition that has involved a lot of cranking, keep in mind the injectors have been firing a lot of raw fuel into the engine. Once the engine is running again, the oil should be changed to drain that fuel out that has diluted it.

Caradiodoc

Caradiodoc
Sep 7, 2010.
Hi Doc

I check ASD Relay the way you told me and everithing check out good, I decided to replace the crank pos sensor and when I test drive the car, It stalt once after that the car runed just fine, but this morning in my way to school the car started hesitating and my check engne light came on, I just connected the scanner and it say, intermittent cam or cka position sensor fault what do you think the problem is? I think the code was P0139

Tiny
Elgastador
Sep 9, 2010.
Hi Doc again

The code I got was P1391, I was wondering if the new sensors had to go to a re learn process or do I have to install the new sensors certain way, I was reading in autozone. Com that the sensor is suppost to have a spacer. But I did not see any spacer on the old or the new one. Thanks

Tiny
Elgastador
Sep 9, 2010.
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