Sub Menu
Online Users

In total there are 19 users online :: 1 registered, 0 hidden and 18 guests

Most users ever online was 85 on Fri Jul 26, 2013 11:41 am

Registered users: Google [Bot] based on users active over the past 5 minutes

Last Online
In order to view the online list you have to be registered and logged in.



We are a free and open
community, all are welcome.

Click here to Register

Search

Need some help

Go here for help using this forum.

Moderators: 89ARIES, Webmaster

Need some help

PostAuthor: cald600 » Mon May 15, 2017 2:40 am

Hello I am new to this site so thanks everyone ahead of time for taking time to answer my questions. I have a 85 Dodge 600 convertible, 2.2L I bought it and it just has been giving me fits and I am at my wits end :x . It runs with quite a lot of vibration and missing, while driving once it warms up it just shuts off like I turned the key off. When I try and start it, it does start but its a hard start. Here is what I have done so far...
I have replaced the fuel pump, MAP sensor, Control module, it has new distributor, wires, plugs, and coil, I took off throttle body and cleaned it, and checked the timing, and still no good.
The only thing that did get fixed, was before I changed control module the car would stall and fuel pump would not run ( which lead me to believe it was the fuel pump in the first place). I come to find out that it was good but if I disconnected the battery it would kind of reset the system and the fuel pump would start working again. Now I just have the stalling problem still, but only if its been running for a few minutes and gets up to temperature.
Well I have read a few post and there seems to be a lot of knowledge here any help is greatly appreciated.
thanks

cald600
 
Posts: 4
Joined: Sat May 13, 2017 1:51 am
Car Information: D600 convertable
Location: Michigan

Re: Need some help

PostAuthor: Kwagon2 » Tue May 16, 2017 6:21 pm

Hi
First, are there any fault codes? Second, which module did you replace? On this car there are two, the Power Module under the hood , and the Logic Module behind the passenger side kick panel which I believe you obviously found when you replaced the MAP sensor. Also understand that the '85 F.I. is stand alone major changes were made in '86! A critical item on these (First Generation Chrysler Bosch F.I.) are the engine and chassis grounds without good solid , clean grounds the logic module goes kinda wonky , you'll get random fault codes and terrible engine operation.
There is a ground strap attached to the intake manifold just below the throttle body which goes to the firewall , ensure the strap is in good shape & clean up both ends , also on the top of the intake manifold there is a harness ground , you'll see the ring terminal under a bolt head (drivers side of the throttle body) clean it & ensure its tight. Then clean the harness ground on the fenderwell behind the battery. Clean these to shiney and reattach securely. Also ensure that the harness connections going into the logic module are clean and dry. I've done this to cars that were driving other mechs nuts and it made a real difference.

Kwagon2
Car Fan
 
Posts: 81
Joined: Tue Jun 09, 2015 2:46 pm
Car Information: '82 Dodge Aries Wagon,'85 Plymouth Reliant SE
Location: Mid Canada

Re: Need some help

PostAuthor: cald600 » Wed May 17, 2017 9:47 pm

Thanks so much for the reply. Yes I checked the codes only one I have been getting is for the temp sensor. The module that I replaced was the one under the hood (power Module). I will check all the grounds, that is some good info never thought of that.
Also I was doing some looking on line on testing Ign Coil with a Multi meter Every site I have checked says that the OHMS at 20K should be 10.5 or greater. Mine registers at 8.6, but it is a new coil so I'm not sure if its bad or just cheap or normal. Have you heard anything about that? Does that sound right?

thanks
for all the help!!!!!

cald600
 
Posts: 4
Joined: Sat May 13, 2017 1:51 am
Car Information: D600 convertable
Location: Michigan

Re: Need some help

PostAuthor: Kwagon2 » Fri May 19, 2017 12:05 pm

Hi
When it comes to ignition coil resistance there is a fair leeway given ...considering that with so many turns on the secondary and the resultant net length of wire the resistance reading can become temperature dependent. Chrysler used a few different suppliers for their coils as well. Generally the "factory" coil resistances are about 1.4 to 1.6 on the primary and roughly 9k to 12.2 k for the secondary this would be at room temperature.
Frankly the ignition coil is the last item I would ever replace and in the 45 years that i've been actively working on cars I can safely say that I may have replaced very few coils! But in the few I have had to replace cracked coil towers have been the prime failure area. Dirt , corrosion , bad grounds , bad connections , worn through or deteriorated insulation have been the prime electrical bugaboos.....

Kwagon2
Car Fan
 
Posts: 81
Joined: Tue Jun 09, 2015 2:46 pm
Car Information: '82 Dodge Aries Wagon,'85 Plymouth Reliant SE
Location: Mid Canada

Re: Need some help

PostAuthor: cald600 » Sun May 21, 2017 2:19 pm

Thanks so much for the help, you have given me some things to check. Now if the rainy weather will ever break I can give them a try.

cald600
 
Posts: 4
Joined: Sat May 13, 2017 1:51 am
Car Information: D600 convertable
Location: Michigan

Re: Need some help

PostAuthor: cald600 » Tue May 23, 2017 1:43 am

Ok did some cleaning of the grounds. Still same problem. I really sat and worked with it and I have noticed when it shuts off. I have to wait to hear the fuel pump cycle again before it will start back up. I have looked in all my manuals an wire diagrams.... do these cars have a fuel relay? It almost acts like it would if it had a bad relay....

cald600
 
Posts: 4
Joined: Sat May 13, 2017 1:51 am
Car Information: D600 convertable
Location: Michigan


Return to Info and Forum Help

Who is online

Registered users: Google [Bot]

cron