1st Gen Dakota Tech 1987 - 1996 Dodge Dakota Tech - The ultimate forum for technical help on the 1st Gen Dakota.

Truck died while at the stop sign. 88 Dakota 3.9 V6 automatic

Thread Tools
 
Search this Thread
 
Old Mar 26, 2019 | 07:18 AM
  #1  
Josh89Griffin's Avatar
Josh89Griffin
Thread Starter
|
Professional
Joined: Apr 2017
Posts: 167
Likes: 0
From: South Georgia
Default Truck died while at the stop sign. 88 Dakota 3.9 V6 automatic

On the way to work this morning, my 88 Dakota 2WD 3.9 V6 automatic died on me. Got it cranked back up and going. Sounded like it was idling high. I had to slow down to make a left hand turn at the green light and the truck died again, so I coasted off to the side of the road. Put it park and fired it back up & it sounded like it was idling high again.
The gas gauge showed between 1/2 and 3/4 of a tank of gas.
The last thing I done to this truck was install a new fuel filter and replaced the two rubber hoses on the fuel filter.
Any suggestions?
 
Reply
Old Mar 26, 2019 | 08:24 AM
  #2  
RalphP's Avatar
RalphP
Champion
Joined: Jan 2013
Posts: 4,737
Likes: 374
From: Northwest Louisiana
Default

Check all vacuum lines.

Check your idle kicker.

Check the throttle return spring (from the throttle body to the bracket at the front of the motor).

RwP
 
Reply
Old Mar 26, 2019 | 09:16 AM
  #3  
Josh89Griffin's Avatar
Josh89Griffin
Thread Starter
|
Professional
Joined: Apr 2017
Posts: 167
Likes: 0
From: South Georgia
Default

Thanks RalphP!
I will check those
Originally Posted by RalphP
Check all vacuum lines.

Check your idle kicker.

Check the throttle return spring (from the throttle body to the bracket at the front of the motor).

RwP
 
Reply
Old Mar 28, 2019 | 07:58 PM
  #4  
Blue Moon's Avatar
Blue Moon
Amateur
Joined: Sep 2017
Posts: 26
Likes: 0
From: Calgary, AB
Default

[QUOTE=Josh89Griffin;3433253]Thanks RalphP!
I will check those[

Keep us updated. Good luck
 
Reply
Old Apr 16, 2019 | 10:07 PM
  #5  
Josh89Griffin's Avatar
Josh89Griffin
Thread Starter
|
Professional
Joined: Apr 2017
Posts: 167
Likes: 0
From: South Georgia
Default

I did need up replacing a missing vacuum line from the front of the throttle body to the air filter. A friend & I replaced the IAC last year & used a tachometer to set the screw. While in idle, the truck revs up & goes back down as if it’s about to die, but if I push the gas pedal, the truck makes a loud shrill noise.
My next concern is, should I replace the intake manifold gasket?
 
Reply
Old Apr 16, 2019 | 10:13 PM
  #6  
RalphP's Avatar
RalphP
Champion
Joined: Jan 2013
Posts: 4,737
Likes: 374
From: Northwest Louisiana
Default

Did you do the "Pull the ETC sensor" first, as per the manual?

Typically, idle hunt like that is caused by a vacuum leak. The loud shrill noise should help you locate it.

RwP
 
Reply
Old Apr 16, 2019 | 10:29 PM
  #7  
Josh89Griffin's Avatar
Josh89Griffin
Thread Starter
|
Professional
Joined: Apr 2017
Posts: 167
Likes: 0
From: South Georgia
Default

ETC sensor?!
Originally Posted by RalphP
Did you do the "Pull the ETC sensor" first, as per the manual?

Typically, idle hunt like that is caused by a vacuum leak. The loud shrill noise should help you locate it.

RwP
 
Reply
Old Apr 16, 2019 | 11:25 PM
  #8  
RalphP's Avatar
RalphP
Champion
Joined: Jan 2013
Posts: 4,737
Likes: 374
From: Northwest Louisiana
Default

ECT - sorry. Engine Coolant Temperature sensor. You're supposed to disconnect it, which causes the ECU to pull all timing. There's a sequence to it, covered in the FSM.

RwP
 
Reply
Old Apr 17, 2019 | 10:49 AM
  #9  
Josh89Griffin's Avatar
Josh89Griffin
Thread Starter
|
Professional
Joined: Apr 2017
Posts: 167
Likes: 0
From: South Georgia
Default

I figured that's what you meant. Here are two pictures from the 1988 Dakota Service Manual from Chrysler Motors says:


Originally Posted by RalphP
ECT - sorry. Engine Coolant Temperature sensor. You're supposed to disconnect it, which causes the ECU to pull all timing. There's a sequence to it, covered in the FSM.

RwP
 
Reply
Old Apr 17, 2019 | 12:14 PM
  #10  
RalphP's Avatar
RalphP
Champion
Joined: Jan 2013
Posts: 4,737
Likes: 374
From: Northwest Louisiana
Default

Yep, that's the method.

One more thing. On my truck, when it starts squealing, it's been the A.I.R. (smog) pump failing; be sure to check that.

RwP
 
Reply



All times are GMT -4. The time now is 09:22 PM.