2001 Dodge Intrepid no code

NATHANTURLEY88

MEMBER
2001 DODGE INTREPID
3.5L
V6
2WD
AUTOMATIC
130,000 MILES

This vehicle died while being driven. Thought it might have been the fuel pump because I could only hear it engage for half a second. Got it put in and no start. Is still only coming on for a second. At first I didnt think it had a fuel pressure test port, but later found out that it did have one. So I tested and its right around 50. Im wondering what the fuel pressure should be? Anyways. It is not flashing any codes. I am getting spark but after pulling a spark plug I could tell that it wasnt wet. So I figured the injectors werent working. But I do have pressure on the rail. Since the cop are working and im getting spark, is it safe to say that the pcm is not sending the ignition control module the signal to spray injectors?

1 Reply

WRENCHTECH

MECHANIC
20,758 POSTS

The fuel pump is only supposed to come on for a 2 second prime when the key is turned on.

You need to do some more in depth testing.

All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.

Every engine requires spark, fuel and compression to run. That's what we have to look for.

These are the basics that need to be tested and will give us the info required to isolate a cause.

1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.

2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.

3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.

4) If all of these things check good, then you would need to do a complete compression test.

Once you have determined which of these functions has dropped out,
you will know which system is having the problem.