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JA: Thanks. Can you give me any more details about your issue?
Customer: I have a 2001Chevy 3500 express van. I have put on a new alternator. Van died in two blocks. Chevy house said I needed new ECM. Installed, programmed but van will not start. Engine light is on but no codes are showing.
JA: OK got it. Last thing — Chevy Mechanics generally expect a deposit of about $18 to help with your type of question (you only pay if satisfied). Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 1 year ago.Category: Chevy
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Customer reply replied 1 year ago
Never got a temporary password ***** I am not sure if I am logged in or not. Did you get the deposit?
Answered in 16 minutes by:
4/9/2016
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
AMEDEE
AMEDEE, CHEVY TECHNICIAN
Category: Chevy
Satisfied Customers: 27,096
Experience: ASE certified tech ADVANCED LEVEL SPECIALIST. Wisconsin certified emissions state inspector
Verified
Hello and welcome! Are you saying now that the engine cranks over but does not start ever since the ECM was replaced? Or does it not even crank over at all? Are there any codes in the computer?
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Customer reply replied 1 year ago
Engine has never failed to crank. Service engine soon light is on but no codes are shown, at least that is what the Chevy house told me.
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
So it cranks over but does not start? Does it have spark? Does it run on starting fluid?
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Customer reply replied 1 year ago
Have not tried starting fluid but I go get fuel out of the fuel filter when it cranks. Apparently no spark.
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Can you check for me?
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Customer reply replied 1 year ago
yes, but will have to be tomorrow. I have to tow it home from the Chevy house. If the ignition system has a failure ( coil or distributor) will it not show a code?
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
It should.. Are there any anti theft or security lights on or flashing on the dash when trying to start the engine?
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Customer reply replied 1 year ago
The lights burn for about 10 seconds and then go off.
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Have you tried to do the ignition switch relearn procedure after the ECM was installed?
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Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Here is the relearn procedure. Try this first and let me know how it goes. If this does not work, simply reply back so we can move on to other things.
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Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Attempt to start the engine, then release the key to ON; the vehicle will not start. Observe the SECURITY telltale; after approximately 10 minutes the telltale will turn OFF. Turn OFF the ignition and wait 5 seconds. Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes; the vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK. Start the engine. The vehicle has now learned the Passlock Sensor Data Code and/or password.
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Customer reply replied 1 year ago
OK, tried the Passlock sensor reset and that did not work. The security light turns off after about 5 or 6 seconds. I still did the 30 minute procedure just in case but that did not fix it. We have it towed home so we can check the spark later today after work. Is it true that codes will only show if the vehicle starts? or is that problems that certain reader will only read the codes if the vehicle is started?
Customer reply replied 1 year ago
or is the problem that certain readers will only read the codes if the vehicle is started?*
Customer reply replied 1 year ago
(Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Please accept my offer and call me
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Customer reply replied 1 year ago
You told me the charge would be $18 and it was $28. Now you want more money for a phone call when I have been waiting since noon for you to reply. Are you going to finish helping me with the van?
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Hello! YES, I am going to finsih helping you.
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Customer reply replied 1 year ago
We posted three times this morning. What is your response?
Customer reply replied 1 year ago
We have replaced the coil and the crankshaft positioning sensor as well.
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
So does it run on starting fluid?
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Customer reply replied 1 year ago
negative
Customer reply replied 1 year ago
As best as I can tell we have no spark from the coil.
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
And does it have spark?
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Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Ok, does the coil have power with the key on and cranking?
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Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Can you please post your VIN for me?
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Customer reply replied 1 year ago
We have a two wire coil. We have power on one side. How do you want me to check?
Customer reply replied 1 year ago
1gbjg31r511239994
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Lets check for a ground signal trigger going into the ignition coil. This is the signal wire that triggers the coil to fire the spark. This is done with a test light. But only you would hook it up backwards. Hook the alligator clip of the test light and hook it to battery positive, and take the tip of the test light and touch it the signal wire of the coil. The test light should blink when cranking over the engine if its getting a signal. If you use a conventional test light, it will flicker very very dim (so look closely) if the coil is getting a signal to fire the spark.
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Customer reply replied 1 year ago
which is the signal wire?
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
White/black wire
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Customer reply replied 1 year ago
With the ignition in the off position the light burns bright. In the crank position there is nothing
.
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Ok, this means there is no signal. Are you sure that the engine light comes on with the key on?
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Customer reply replied 1 year ago
The service engine light?
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
yes
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Customer reply replied 1 year ago
The service engine soon light comes on in the on position
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Ok, good. Have you checked the signals from the cam and crank sensors?
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Customer reply replied 1 year ago
Crank sensor has been replace. The cam sensor is in the distributor, right?
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
You got it!
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Customer reply replied 1 year ago
How do you test it?
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
You should see an on off signal on the signal wire as the engine is rotating.
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Customer reply replied 1 year ago
what color wire?
Use the test light?
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
I will have to pull a wiring diagram. Did you say that the ignition module was replaced?
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Customer reply replied 1 year ago
ignition module?
Customer reply replied 1 year ago
no we only replaced the coil
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Well, you might just have a bad ignition control module..
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Customer reply replied 1 year ago
three wires, red, brown with white stripe, orange with black stripe on cam sensor
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
You got it!
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Customer reply replied 1 year ago
which one is signal wire
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Brown/white
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Customer reply replied 1 year ago
clip to ground, probe to brown and white wire. No signal
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
If your checking this while the engine is turning, then the cam sensor is bad and will need to be replaced.
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Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
I am glad I can help! It has been a pleasure working with you. Please dont forget to honor your good faith deposit by rating my answer as "Excellent Service" for assisting you today. Please let me know if you have any further questions.
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Customer reply replied 1 year ago
So the cam sensor is in the distributor but will fix the problem with no spark from the coil?
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Based on what your telling me, yes
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Customer reply replied 1 year ago
and the ignition module?
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
YES
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Customer reply replied 1 year ago
good or bad?
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
I am sorry I dont understand your question.
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Customer reply replied 1 year ago
Do I have to replace the ignition module?
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
I would
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Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
I am glad I can help! It has been a pleasure working with you. Please dont forget to honor your good faith deposit by rating my answer as "Excellent Service" for assisting you today. Please let me know if you have any further questions.
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Customer reply replied 1 year ago
All parts stores are closed. Can we contact you tomorrow if this does not work?
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
YES
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Customer reply replied 1 year ago
van started. Ran about 5 minutes. Died. Will not restart.
Customer reply replied 1 year ago
If this matters. The ignition module was replaced first. The van started and ran about 5 minutes. Replaced Cam shaft sensor. Van started and ran about 5 minutes. Died. Will not restart.
Customer reply replied 1 year ago
The van died after 5 minutes of running with replacement of ignition module.
Customer reply replied 1 year ago
Van restarted. Ran 3 minutes. Died.
Customer reply replied 1 year ago
Van ran for 5 minutes in park. Shifted into drive. Died 2.5 minutes later.
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
Ok, run the no start diagnostic steps we discussed in this conversation above and let me know what the engine is missing.
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Customer reply replied 1 year ago
start with the ignition switch relearn procedure?
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
no, the no start diagnostic steps
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Customer reply replied 1 year ago
Signal trigger for ignition coil. Test light burns in the key off position. Burns steady with the engine running.
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
I thought the engine does not run?
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Customer reply replied 1 year ago
Did you read my posts from the afternoon? Van will run in park. When you shift to drive it will die in 3 minutes.
Customer reply replied 1 year ago
No signal on brown white wire from cam shaft sensor with engine running
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
So the entire distributor was replaced but there is still no signal being generated from the sensor inside the distributor when cranking? Is that correct?
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Customer reply replied 1 year ago
NO the distributor was not replaced. Just the sensor.
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
I would verify the inputs are correct and then replace the distributor as needed.
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Customer reply replied 1 year ago
The van will run for 10 minutes plus in PARK but die in 3 minutes after it is shifted into drive and that is a distributor problem?
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
It is possible
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Customer reply replied 1 year ago
Not sure what you mean by verify the inputs are correct.
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 1 year ago
The cam sensor needs a reference voltage and a ground to work properly.
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AMEDEE
AMEDEE, CHEVY TECHNICIAN
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