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Peter
Dodge Dakota
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12/12/2006
12:58:52
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 Subject: V6 Stalling
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I have a 97 V-6 automatic that has been having a stalling problem. It will start right up in the morning, and stay running without any problems. After it is warmed up, it will start right up, but the idle drops down and it stalls out. If I keep my foot on the gas, it will stay running and usually by the time I get out of the parking lot it is fine and returns to normal. I have had this problem occassionaly, and it went away, but this past week it has been constantly, and it died on the way home from work last night. I was able to pop it into neutral and start it again while keeping my foot on the gas when slowing down. It died at a stoplight after that.
I have a full tank right now. I swapped out the battery with no results. About 8 months ago I replaced the timing chain, and plenum gasket, changing the spark plugs and wires, cleaning the throttle body and IAC. I am borrowing my dad's ram right now, which has the same IAC, so I might swap them out to see if it helps. I reset the computer last night after I got home, and it started up fine and maintained the idle. Then I turned it off and started it again, and the idle dropped low, like it was about to stall, but returned to normal. Let me know what you guys think. Tonight I was going to check the IAC and try checking the coil after it gets warm. I already bought a fuel pump, which I might try to change this weekend, if I don't have any luck. Let me know what you guys think. Thanks.
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Kowalski
GenIII
12/12/2006
14:50:42
| RE: V6 Stalling
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Does the Ram have the same TPS too, so that you could try swapping that if the other IAC doesn't make a difference ? Maybe the IAC isn't opening because it doesn't see the throttle position correctly as closed ? Just a guess, let us know how you make out.
Lead, follow, or get out of the way
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chris
Dodge Dakota
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12/12/2006
16:26:24
| RE: V6 Stalling
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I would guess the 97 is an OBD2 system. You might consider driving it to an auto parts store that will read out the fault codes for free for you. As Kowalski suggested, it could be something like the TPS.
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Peter
Dodge Dakota
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12/12/2006
17:11:22
| RE: V6 Stalling
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I just checked the autozone website and it looks like the TPS is the same, so I will be taking a look at it tonight. I'll make sure to post my results because it sure is frusterating to search and see people having the same problem with no results posted.
I turned the key on and off 3 times, and only got the code 12. It's my understanding that if nothing shows up there it won't show up on a OBD II code reader. Let me know if you have experienced anything different though.
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Mike Stager
Dodge Dakota
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12/13/2006
00:31:27
| RE: V6 Stalling
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I have a 97 also, and experience similar problems, but only when the temps get really low.
I have a check engine light on, and have an O2 sensor on the way, but I also have other codes that had been set by the OBD2 system that don't show up with the key on key off trick. Interestingly, the 1997's are the only year that you can do the trick on with the OBD2 system as they are the first year of the OBD2 in the Dakotas.
Hopefully I'll get my O2 sensor soon so I can start working on the other codes, but I'll be interested to find out what the culprit is to your problem, because I think mine may be related, though somewhat different.
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Kowalski
GenIII
12/13/2006
07:27:39
| RE: V6 Stalling
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Actually '99 and maybe '98 would be the only OBDii years that the key truck won't work. It works for '00 and up too; setting the code in the odometer window instead of having to count blinking lights.
Lead, follow, or get out of the way
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Mike Stager
Dodge Dakota
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12/14/2006
00:19:59
| RE: V6 Stalling
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Well, that's good to know. I'll be sure to buy a year 2000 or newer if I buy another Dakota!
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Peter
Dodge Dakota
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12/14/2006
09:21:09
| RE: V6 Stalling
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Well I was able to test a couple of things last night. Just about everything I tested was off by a little. The coil's primary resistance was 1.7, when it should be between .96 and 1.18. The TPS with the throttle open was only reaching 3.97 when it should go up to 4.5, and the MAP sensor was at 1.4 when it should be between 1.5 and 2 with the engine running. Unfortunately my dad needed his truck back, so I wasn't able swap out the sensors to see if it helped. I was going to try and go to autozone to test their coil to make sure it wasn't my tester. Let the games continue.
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Peter
Dodge Dakota
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12/15/2006
00:14:18
| RE: V6 Stalling
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I checked a new coil at Autozone and got the same reading, so my
meter must be a little off. I swapped out the TPS with no change at
all. When I swapped out the IAC, it helped right off the bat, but
after the new IAC warmed up, it started to stall out, not nearly as
quick though. The only other thing to check is the crankshaft
position sensor, which I will do Saturday morning after I get a big
enough socket to rotate the crank. If that reads good, I'll be taking
off the bed for the fuel pump, unless anyone has any ideas. I'll
keep you posted.
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Trevor
Dodge Dakota
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12/15/2006
08:46:05
| RE: V6 Stalling
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I wouldn't be taking the bed off for the fuel pump. If you can hear it pressurize it should be fine, if it doesn't, get under and hit the tank. The pump when they get old, get flat spots in them. This doesn't sound like a fuel pump problem anyways.
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Bob Lincoln
Dodge Dakota
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12/15/2006
09:12:03
| RE: V6 Stalling
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TPS should not go as high as 4.5V. It should be about 3.7V to 3.9V at WOT.
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Peter
Dodge Dakota
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12/15/2006
09:29:24
| RE: V6 Stalling
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Couldn't the filter in the regulator and the fuel sock be getting clogged causing this? I can definitely hear the pump working, but I was thinking it had more to do with the regulator.
Bob – I was going by the Haynes manual.
To make matters a little more interesting. After putting everything back together on my dad’s 98 ram, with a 5.2, it died on the way to work while I was driving, I was able to start it back up, but I had to keep my foot on the gas to keep it going for awhile, and then it was ok. I think it threw a code so I might have to stop by Autozone. Before I put the IAC back in, I sprayed it down with carb cleaner, and was very careful when I was wiping off the tip.
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Kowalski
GenIII
12/15/2006
12:35:31
| RE: V6 Stalling
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I'd expect to see a fuel delivery problem more in a high load situation than your description of the problem at the start of this thread. Sounds more like you're losing the idle memory at times ?
Lead, follow, or get out of the way
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daddio
Dodge Dakota
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12/15/2006
12:54:29
| RE: V6 Stalling
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could be the temp sensor if it's doing it only after it reaches operating temp.
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Peter
Dodge Dakota
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12/15/2006
13:28:07
| RE: V6 Stalling
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I changed the temp sensor, coolant and intake, out about a year ago, but they could have gone bad, so I'll try checking those too. I think I'm going to change out the IAC anyways, because the throttle response was a whole lot better.
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Dan M
Dodge Dakota
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12/15/2006
13:36:35
| RE: V6 Stalling
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I got a temp sensor from autozone for my old 95 and went through 2 of them in about 3 months. one stopped reading and the other broke in two- that was a bit of a pain to get out.
Switched to one from advance and it worked fine.
- Dan M
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Peter
Dodge Dakota
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12/18/2006
13:51:41
| RE: V6 Stalling
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Well, I changed out the fuel pump and it didn't help right away. I reset the computer, and it's much better but it will still stall, just not as often as before. I went ahead and changed out the IAC too. I bought a coolant temp sensor that I may tackle after putting some more miles on it. Taking the bed off wasn't too bad, except for some rusty bolts, and I took off my bed cover and tailgate to make it lighter. 3 people definately help, but it can be done with 2. After the coolant temp sensor, I am at a loss. Can anyone suggest a place to take to get it scanned, and how much $? I wasn't able to test the crank sensor because it requires an analog meter. My digital was reading a little over 5 volts when the engine was being turned by hand.
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dak boy
Dodge Dakota
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12/26/2006
19:07:48
| RE: V6 Stalling
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If it matters to anyone,I have noticed the key on,off,on,off,on trick works with OBDII dakotas and durangos from between 2000 -2002 I have yet to successfully use that trick on any '03 or newer..
but as for the stalling.Also check your pcv valve and all vacuum hoses before changing TPS.
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Mike Stager
Dodge Dakota
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12/27/2006
01:00:53
| RE: V6 Stalling
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Peter, what condition is the O2 sensor in?
I'm waiting to get mine, but on occasion, my truck will not stay running at idle either. Seems to be intermittent, though it happens more often when I restart the truck after driving it home from work a few minutes after it's been shut off. Doesn't happen often, and lately it's only been a small stumble that clears right up, but it happened more often when it was colder than freezing ( the worst was a very cold start in the morning...it just woudln't idle on its own until after I had driven around the block to the first stop sign ).
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Peter
Dodge Dakota
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12/27/2006
12:52:29
| RE: V6 Stalling
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The 02 sensors are Bosch, so I think they have already been replaced once, unless that's stock. And I only have problems when it's warm. It actually runs great when it's cold. I have looked all over for a vaccuum leak. Anyone know of possible places that are prone to air leaking on these engines.
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daddio
Dodge Dakota
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12/27/2006
12:59:42
| RE: V6 Stalling
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Mike, have you had your battery load tested? my '00 has the original battery and it is getting a little weak. onm a cold day the first start, it will idle rough for the first few seconds, then smooth out as battery voltage comes back up.
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