Driving up a highway on ramp and truck felt like transmission slipped and lost power and then shut off and would not restart

Tiny
LANCE GAGNE
  • MEMBER
  • 2002 DODGE RAM
  • 5.9L
  • V8
  • 4WD
  • AUTOMATIC
  • 215,000 MILES
Don't think it is transmission because I would assume it would start, it just wouldn't go anywhere. No noticeable noises when it happened. No check engine light that I remember seeing, but I may have cleared it when I removed battery cables to clean them off. Had a lot of corrosion built up on both. Towed back to the house and after cleaning terminals tried to jump start it with our other car. It cranks and seems to have power but wont start. I then checked for audible fuel pump noise and checked fuel pressure with a gauge. It was 44 psi at rail. Not sure what spec is but I would appreciate any help. Would bad battery cause a no start like that and cause it to shut off while driving? I always thought a car would run with a bad battery after it was started but I could be wrong. Any help is appreciated!
Monday, November 18th, 2019 AT 3:22 PM

19 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi.

It's a little low, but should at least try to start. Here are the specs for you:

2002 Dodge or Ram Truck RAM 1500 Truck 4WD V8-5.9L VIN Z
Pressure
Vehicle Powertrain Management Fuel Delivery and Air Induction Fuel Pump Fuel Pressure Specifications Pressure, Vacuum and Temperature Pressure
PRESSURE

FUEL SYSTEM PRESSURE 339 kPa +/- 34 kPa (49.2 psi +/- 2 psi)

__________________________________

Will it start for a couple seconds using starting fluid? Also, have you checked for ignition spark to the plugs? That is where I would start at this point. Here are a few links to help guide you.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

https://www.2carpros.com/articles/car-cranks-but-wont-start

________________________________

If there is no spark, my first suspect is the crankshaft position sensor. Take a look through these links.

https://www.2carpros.com/articles/how-a-crank-shaft-angle-sensor-works

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

_________________________________

The easiest way to test the sensor is with a live data scanner. If it is bad, you first won't have spark and second, there will be no RPM signal when you are cranking the engine. If you find it is bad, here are the directions specific to your vehicle for replacement. The attached pic correlates with the directions.

________________________________

2002 Dodge or Ram Truck RAM 1500 Truck 4WD V8-5.9L VIN Z
Procedures
Vehicle Powertrain Management Sensors and Switches - Powertrain Management Sensors and Switches - Computers and Control Systems Crankshaft Position Sensor Service and Repair Procedures
PROCEDURES
Fig. 13 CKP Removal/Installation - 5.9L

Pic 1

REMOVAL
The sensor is bolted to the top of the cylinder block near the rear of right cylinder head.
1. Raise vehicle.
2. Disconnect crankshaft position sensor pigtail harness from main wiring harness.
3. Remove two sensor (recessed hex head) mounting bolts.
4. Remove sensor from engine.

INSTALLATION
1. Position crankshaft position sensor to engine.
2. Install mounting bolts and tighten to 8 Nm (70 in. lbs.) torque.
3. Connect main harness electrical connector to sensor.
4. Lower vehicle.

____________________________________

Do these checks and let me know what you find or if you have other questions.

Take care,
Joe
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Monday, November 18th, 2019 AT 8:18 PM
Tiny
LANCE GAGNE
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Okay, I'll do those checks when I get home from work. Have we ruled out the battery for sure at this point it is pretty old?
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Tuesday, November 19th, 2019 AT 5:07 AM
Tiny
LANCE GAGNE
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Only thing my scanner shows is engine rpm's and it showed 130ish while trying to start it. Ill have to wait to check for spark like the video showed till I have a day off. Its raining here and I don't have a garage. :/ I sprayed starter fluid into the air intake boot and did'nt start as well.
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Tuesday, November 19th, 2019 AT 3:42 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Okay, there is no spark then. If it doesn't start with starting fluid, there isn't spark or something internal has caused low compression or timing issues.

If you are getting an RPM signal, then the crank sensor is working. So that is eliminated. Next, is the ASD, could be an issue. In addition for checking if there is spark, also check if there is an injector pulse at the injectors. If you look at the attached picture, you will see how they are tied together.

Confirm both spark and an injector pulse. If both are missing, we will try the ASD relay. If that is good, we will need to check the coil itself.

Here is a link that explains how to check for an injector pulse:

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Here are a few links that you may find helpful when testing:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

______________________________________________________________

Last but not least. If there is an injector pulse but no spark, here is what I need done. Unplug the connector at the coil. It is a two wire connector. One if the wires is black and gray which goes to the PCM and the other is the power supply (dark green / orange) from the ASD. I need to know if when the engine is cranking if the black/gray wire is getting an on and off ground. If it is, check the other wire for power with the key in the run position. You will need to crank the engine to check.

Here is why. The PCM opens and closes the ignition coil ground circuit for ignition coil operation. If the black / gray isn't showing continuity to ground on and off, there is either an issue with that wire, the PCM connector, or the PCM. On the other wire, battery voltage is supplied to the ignition coil positive terminal from the ASD relay. If the PCM does not see a signal from the crankshaft and camshaft sensors (indicating the ignition key is ON but the engine is not running), it will shut down the ASD circuit. We know there is a crank signal since you found an RPM signal, so then we have to go to the ASD.

I hope I'm not giving you a headache. LOL Let me know your findings. If you have any questions or need guidance, let me know.

Take care,
Joe
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Tuesday, November 19th, 2019 AT 6:28 PM
Tiny
LANCE GAGNE
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Okay, I think I checked everything you posted. I got a test light at least once on each test. However it wasn't easy since the battery is pretty much dead. I had to jump it for a little bit so it would turn over for each test :/. I got no spark from spark plug wire and test light to confirm the no spark. Injector tests I got at least a light once where it said I would. Pulse test I got one light but wouldn't crank long enough to get more. I am down to the coil testing but I need more info on how to check what you need to know. Pardon my stupid but electrical isn't a strong suit lol. Can you walk me through the on and off ground and the power test on second wire please? :)
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Sunday, November 24th, 2019 AT 2:48 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi,

Not a problem. Before testing ground, take your test light and see if there is power to the dark green/orange wire with the key in the run position. If there is, then proceed to the next step. If there is no power, stop at that point and let me know. There may be an issue with the ASD.

What you need to do is check for continuity to ground on the black / gray wire. Basically, you are checking to see if when you probe that wire if it goes to ground. You really need a multi meter to test this. You will set it to ohms to perform the test. Simply place one end of the multi meter on the wire and the other end to a known good ground, even the battery ground. Then, crank the engine to see if you get continuity on and off.

If you have power and the ground checks good, replace the coil

Let me know what you find.

Joe
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Monday, November 25th, 2019 AT 6:09 PM
Tiny
LANCE GAGNE
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Okay, so did the green/orange wire like you said. Removed the connector and checked the green/orange wire at the connector and then probed the wire itself. With key on got no light both ways and had test light grounded to neg battery cable. Actually both wires were basically black in color from age I guess so I probed both to make sure lol.
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Tuesday, November 26th, 2019 AT 3:10 PM
Tiny
LANCE GAGNE
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  • 34 POSTS
Also, on a side note; is there supposed to be a chime while the key is in the cylinder? Mine wont give a door chime unless I press the key in like I am going to start it. Just seemed odd I never noticed it before. Not a big deal but wondering if that will need to be changed soon too.
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Tuesday, November 26th, 2019 AT 3:16 PM
Tiny
JACOBANDNICKOLAS
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Okay.

I need you to check two fuses in the under hood fuse box. See the attached picture. If the fuses are good, confirm there is power to the circuit.

Joe
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Tuesday, November 26th, 2019 AT 5:55 PM
Tiny
LANCE GAGNE
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Continuity on both fuses. Tested the number 2 socket with key on and got a test light on. Number 49 socket only lights when cranked then shuts off.
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Wednesday, November 27th, 2019 AT 1:43 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Okay, that sounds like all is working. That leads me to the coil itself. To do the next test you need a scanner that can actuate the ASD. Is that something you have? If so, take a look at the attached picture and confirm there is power to the coil from the ASD. If there is, replace the coil. I know this is a pain, but to determine the actual problem, this is what is required.

Let me know.

Joe
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Wednesday, November 27th, 2019 AT 8:32 PM
Tiny
LANCE GAGNE
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No, I don't have a scanner that will do that. Just an obd2 with live data. Coil and ASD relays are cheap, I will just replace both and see if that fixes it. If not then I am only out $25.00. I guess lol.
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Thursday, November 28th, 2019 AT 12:05 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Lance, I hate to see people waste money, but it's your call. I would try the coil first. Let me know what happens.

Joe
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Thursday, November 28th, 2019 AT 5:39 PM
Tiny
LANCE GAGNE
  • MEMBER
  • 34 POSTS
Replaced coil still no start. Checked the relays ASD and fuel pump with multi-meter and test light. Audible click from both and ohms were within the spec. What does the scanner have to have on it for it to be able to actuate the ASD? I may be able to upgrade to a new one if its not too much.
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Sunday, December 8th, 2019 AT 1:16 PM
Tiny
JACOBANDNICKOLAS
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The scanner is used in this case to actuate different components. However, if you have power to the ASD and out, there must be a break in the wiring at some point.
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Sunday, December 8th, 2019 AT 7:50 PM
Tiny
LANCE GAGNE
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Got it started today. Acts like its slow to start, turns over really slow then starts. Not sure what I did other than put water in the battery and put it on the charger. Pushed on all connections. But it started. Sounds bad though, loud tick and a kind of squeal. I will send a video.
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Thursday, December 12th, 2019 AT 2:29 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi,

The tick sounds like a lifter. Is the oil clean and full? As far as the noise, it could be coming from the belt or one of the belt driven accessories.

If it is still turning slowly, it sounds like the battery. I would suggest having it load tested by a parts store to see if it is good. Also, try something for me (and don't laugh). The noise can be a few things, so I want to eliminate the belt. Start the engine and while you hear the noise, pour a small amount of water on the belt and see if the sound changes. Make sure you protect your eyes and wear old clothing. Water can spray at you.

Let me know what you find,

Joe
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Thursday, December 12th, 2019 AT 4:43 PM
Tiny
LANCE GAGNE
  • MEMBER
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Okay I will try the belt test tomorrow after work. It didn't seem like it had much power either
(i just backed out of the driveway to move it to a better area to work on it). Could that be a battery issue as well? Also I have noticed over the summer a noise from my A/C compressor when it cycles or the heat is on. At least I think its the A/C. Only when I have it off it doesn't do it. Anyway ill check battery tomorrow as well. Thanks for the help. :)
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Thursday, December 12th, 2019 AT 5:50 PM
Tiny
JACOBANDNICKOLAS
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Happy to help. Let me know what you find.

Joe
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Thursday, December 12th, 2019 AT 7:56 PM

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