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Will not start

Tiny
DLLEWIS
  • MEMBER
  • 2005 DODGE CARAVAN
  • 3.8L
  • 6 CYL
  • 158 MILES
Van (Grand model) went down wouldn't start so replaced fuel pump, relays (three), crankshaft sensor, cam shaft sensor, battery, plugs, coil. Still will not start. Fuel is going to rail, pump works can hear it cycle, acts like it isn't getting any fuel to injectors. That's 158,000 miles on it.
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Monday, January 7th, 2019 AT 1:34 AM

14 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

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

Do you have spark when you crank it at the plugs?

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

If you have a tachometer on the cluster, does it rise a little when you crank it?

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

I would check the fuel pressure as well to be sure sufficient pressure is at the injectors.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Roy

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Monday, January 7th, 2019 AT 3:39 AM
Tiny
DLLEWIS
  • MEMBER
  • 10 POSTS
Yes, I have 60 pounds of pressure.
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Monday, January 7th, 2019 AT 6:53 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, do you have spark as I asked?

Does the tachometer move up a little when cranking?

Roy
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Monday, January 7th, 2019 AT 6:56 PM
Tiny
DLLEWIS
  • MEMBER
  • 10 POSTS
Yes, tachometer moves when cranking and it's getting fuel to plugs. Too much in fact. Obd says O2 sensor monitor, I think it's not getting the right air mixture. Could it be the throttle control sensor to the mass flow thing? Don't know what it's called. It runs but won't rev up. Help!
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Tuesday, January 8th, 2019 AT 7:11 PM
Tiny
DLLEWIS
  • MEMBER
  • 10 POSTS
I'm getting spark be to plugs.
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Tuesday, January 8th, 2019 AT 7:12 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, next is a compression test.

The O2 monitor is not the issue. That is a monitor for emissions.

Roy
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Tuesday, January 8th, 2019 AT 7:14 PM
Tiny
DLLEWIS
  • MEMBER
  • 10 POSTS
Compression was tested at exhaust good.
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Wednesday, January 9th, 2019 AT 4:22 AM
Tiny
DLLEWIS
  • MEMBER
  • 10 POSTS
Got van to idle. But boggs out when accelerated why?
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Wednesday, January 9th, 2019 AT 4:24 AM
Tiny
DLLEWIS
  • MEMBER
  • 10 POSTS
Getting to much fuel to plugs?
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Wednesday, January 9th, 2019 AT 4:24 AM
Tiny
DLLEWIS
  • MEMBER
  • 10 POSTS
My friend took apart the mass flow and cleaned it out. Could he have damaged it?
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Wednesday, January 9th, 2019 AT 4:26 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Checked compression at exhaust? No such thing. It needs to be done at each cylinder.

Lets start over, do a compression test.

Are there any codes?

Roy
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Wednesday, January 9th, 2019 AT 4:36 AM
Tiny
DLLEWIS
  • MEMBER
  • 10 POSTS
The green codes are: fuel, miss, ccm.
The red codes are: cht, Eva, o25, htr.
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Wednesday, January 9th, 2019 AT 10:47 AM
Tiny
DLLEWIS
  • MEMBER
  • 10 POSTS
I have a mechanic working on it. He told me if there's good exhaust pressure in tailpipe then compression is good. Send a link please.
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Wednesday, January 9th, 2019 AT 10:51 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Any knows the only way to do a compression test is with a gauge inserted in the cylinder.

https://www.2carpros.com/articles/how-to-test-engine-compression

Green codes?

red codes? nothing showing here.

Roy
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Wednesday, January 9th, 2019 AT 12:08 PM

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