99 Intrepid 2.7 wont stay running - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
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post #1 of 43 (permalink) Old 03-14-2017, 11:41 AM Thread Starter
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99 Intrepid 2.7 wont stay running

I have an Intrepid (185k miles) that I can eventually get started after a few tries. It takes me about three to four long cranks to get it started and I have to give it gas to get it up to about 2000 rmp's and hold it there for a bit while it warms up, otherwise it will just die on me. Once it's warm and I slowly bring it down to idle, it will stay running but very rough.

I pulled the plugs and all six were completely black. I have two leaks coming from the exhaust, one coming from the exhaust pipe and the other from the muffler, both seem to be just water/condensation.

Air filter is good, throttle bottle is squeaky clean, I pulled out the IAC and cleaned it. I've switched out fuse/relays for the fuel pump and ASD. I replaced the spark plugs

After all the checks above, I did a fuel pressure test on the fuel line, at the point where the fuel rail and fuel line connect. It topped out at 45 psi, it slowly worked up from 0 to 45, it probably took about 60 to 90 seconds to get there. Once it reached 45 psi, it held there for about 10 minutes then i shut the car off. I ran the test two times on two different days and got the same results.

My question is, does that rule everything out and pretty much indicate that my fuel pump is bad, or is there still some other possibility?
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post #2 of 43 (permalink) Old 03-14-2017, 08:40 PM
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Fuel pump

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post #3 of 43 (permalink) Old 03-14-2017, 08:41 PM
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Next time try priming it 3 or 4 times, turn the key forward but don't start it, it makes the pump build up pressure after it all bled off overnight

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post #4 of 43 (permalink) Old 03-15-2017, 08:20 PM Thread Starter
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I primed it as you mentioned, but it pretty much did the same thing, small improvement. Looks like I'll be looking into replacing the fuel pump. I've read that my model is pretty difficult I just haven't gone underneath to take a good look at whats involved. May have to take this one into the shop.

Thanks the replies, I'll keep you posted on whether or not that fixed the problem.

Thanks again.
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post #5 of 43 (permalink) Old 03-15-2017, 09:03 PM
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You'll need to drop the gas tank and access the fuel pump from the top of the tank once it's outside the car. If you're not comfortable with doing that type of work then by all means pay a shop to do the work.

Your testing pretty much confirms a fuel pump issue. The pressure should build up almost immediately within a few seconds. Not 0-90. And it should hold the pressure longer than 10 minutes.

Good luck with whatever path you decide.
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post #6 of 43 (permalink) Old 03-20-2017, 11:54 AM Thread Starter
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Update...

I went ahead and decided to do the work myself yesterday. I'm at the point where I have the tank removed and fuel pump out. The only problem is, the replacement fuel pump I have does not look exactly like the one I pulled out. The overall look and size is the same, mine has some kind of metal piece on the top of the pump which has a small electrical connector on it. This particular area on the replacement pump is made of plastic and does not have an electrical connection.

Mine has the main electrical harness connection, a fuel line connection and a very small electrical connection on top of where the fuel line is connected. The replacement pump only has the main electrical harness connection and a fuel line connection.

None of the typical auto sites (Rock Auto, Autozone, O'Reilley's) have a pump that looks like mine.

Am I ok to install the replacement one that I have and leave the small electrical connector unplugged?
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post #7 of 43 (permalink) Old 03-20-2017, 12:07 PM Thread Starter
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Here is the top view...
Attached Images
File Type: jpg Fuel Pump 1.jpg (149.1 KB, 8 views)
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post #8 of 43 (permalink) Old 03-20-2017, 12:08 PM Thread Starter
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Here is the side view...
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File Type: jpg Fuel Pump 2.jpg (175.1 KB, 4 views)
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post #9 of 43 (permalink) Old 03-20-2017, 12:41 PM
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That looks like a ground lug on yours.

Is that replacement used?
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post #10 of 43 (permalink) Old 03-20-2017, 12:46 PM Thread Starter
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Yes, it's used. I had a little time on my hands and I went to the junkyard to tinker with the idea of doing the job myself. It turned out to be a lot easier than I thought so for $20 I brought the pump home with with me, but all the new ones from the parts store are identical. So before I go drop $200 for a new one, I wanted to make sure I could even use it.
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post #11 of 43 (permalink) Old 03-20-2017, 01:21 PM Thread Starter
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Do you think I can use the one without the ground lug? Or should I try to search around for an identical match?
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post #12 of 43 (permalink) Old 03-20-2017, 01:31 PM
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Is the wire that connects to that lug Gray? If so it's a ground.
What year car did that come out of? Be aware that the fuel pump design changed for later year cars.

Take a close look at the electrical connector and verify the number of pins and the shape of them on both is the same. If it is go ahead and throw it in and try it out.
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post #13 of 43 (permalink) Old 03-20-2017, 01:53 PM Thread Starter
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It came out of a 1999 Dodge Intrepid 2.7, identical to mine. I'll check the wire color, pins and shape tonight. I've been looking on multiple parts websites for intrepids 2.7 and 3.2 and chrylser 300's for the years of 99 through 2003 and none of the pumps look like mine. It's very bizarre.

Thanks for the help. I'll post again tonight.
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post #14 of 43 (permalink) Old 03-20-2017, 02:45 PM
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More than likely the fuel pump you had in the car is the original one. The one you got from the yard is most likely a replacement aftermarket one that was installed at some point.
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post #15 of 43 (permalink) Old 03-20-2017, 05:39 PM
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Quote:
Originally Posted by mano View Post
It came out of a 1999 Dodge Intrepid 2.7, identical to mine. I'll check the wire color, pins and shape tonight. I've been looking on multiple parts websites for intrepids 2.7 and 3.2 and chrylser 300's for the years of 99 through 2003 and none of the pumps look like mine. It's very bizarre.

Thanks for the help. I'll post again tonight.
If they're only showing aftermarket fuel pumps then they would look like your used replacement pump. You'd need to find a picture of an OEM pump.
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