Last post on Jun 10, 2013 at 7:03 AM
You are in the Chrysler LHS
What is this discussion about?
Chrysler LHS, Sedan
#1341 of 1409 Re: 1994 CHRYSLER LHS-TRANSMISSION PROBLEMS [stevie03]
Oct 24, 2009 (10:22 pm)
I have had a good look at the wiring diagrams. The gauges are driven from the Body Control module. The power control module sends signals to the Body control module and the transmission control module.
My best guess is that the power control or transmission control modules are at fault, but I suppose it could be the body control module as all these seem to be intimately related.
This is probably something you will not solve yourself.
#1342 of 1409 Re: 1994 CHRYSLER LHS-TRANSMISSION PROBLEMS [tuscanskipper]
Oct 24, 2009 (10:44 pm)
I have done a net search, and this problem has not been solved by replacing the above three modules. However there are a bunch of grounds under the battery case that can go bad and cause this and a a cluster of grounds you have to remove the central dash to get to, that can corrode. It seems this problem is most likely to be a grounding issue.
#1343 of 1409 Re: 1994 CHRYSLER LHS-TRANSMISSION PROBLEMS [stevie03]
Oct 28, 2009 (6:37 am)
In my case it turned out to be simply the ignition block in the column....where the key inserts!
Nov 18, 2009 (5:00 am)
I have a '96 LHS that I bought about 4 months ago. I have so many issues with this car it would take me a month to list them all, so I have chosen the issue that worries me the most and is the most mind boggling.
When I drive down the road my car shakes (violently) but only when I am accelerating. When I let off the gas the car rides very smooth but as soon as I accelerate again it starts to shake. I don't understand what could cause this. Please if you have any suggeestions... I'm a girl so any help will be GREAT!!!
#1345 of 1409 Re: Vibrations [nomopar4me]
Nov 18, 2009 (6:05 am)
I have replaced the Throttle Position switch (sensor), the MAP sensor , and the Idle air control valve on my 94 LHS. I also replaced the Intake manifold gasket which made a huge difference. I would try the Throttle Position switch first, then maybe the Idle air control valve. see if that works. they are not hard to do yourself.
#1346 of 1409 Re: Vibrations [nomopar4me]
Nov 18, 2009 (6:52 am)
It sounds as if you have a miss under load.
Do not replace sensors, unless directed to do so by engine codes. You can read these from the check engine light, by turning the ignition key on off on quickly and counting the blinks from the check engine light.
Causes of your problem could be worn spark plugs, bad sparking plug wires, a bad ignition coil pack. It is possible that the crankshaft position senesor is going bad, but they usually fail totally.
On a car that age there are a few basics you should always do after purchase.
Change plugs and wires. Check brakes and CV joints. Check tie rods, ball joints and shocks. Change serpentine belt if any signs of ware or cracking.
If you don't know when they were changed, change the timing belt and water pump, these later need changing every 90,000 miles on these vehicles.
Now the LHS is known for intake manifold gasket leaks, which leads to irregular miss firing. Since this is an LHS this has a high probability of being your problem.
The gasket is made of a brittle plastic material. When you change it use an aftermarket one made if usual fibrous gasket material and you won't look back. If any of these vehicles have miss firing and the intake gasket has not been changed then this is something that should be done along with the list above.
There are basic things you just have to do when purchasing any used vehicle. Assume the last owner was an idiot and the dealer a crook. Start from that premise and you won't go wrong. Go through the vehicle when you first get it and then a used vehicle can give many good trouble free miles.
#1347 of 1409 Re: Vibrations [tuscanskipper]
Nov 18, 2009 (7:04 am)
Tuscanskipper is probably right on all counts. He helped me fix several problems with my LHS. I would stick with what he told you, He's " the man". I now have my gauges not working and I posted a message last night. Maybe we can figure it out together. Thanks
#1348 of 1409 Re: Vibrations [tsurnick]
Nov 18, 2009 (7:07 am)
here is the message i posted about my gauges and stuff last night.
Gauges, air conditioning, message center NOT working.
I just found number 14 fuse (5 amp) blown. I replaced it and everything came back on momentarily and then the fuse blew again. I am assuming there is a short. Where do I look first? I got 3 trouble codes also.
1. Code 77 Speed Control Power Relay circut is open or shorted
2. Code 21 Problem with Oxygen Sensor Signal Circuit, Sensor Voltage to computer not fluctuating.
3. Code 12 Problem with the Battery Connection. Direct Battery Input to controller Disconnect within the last the last 50 ignition key-on cycles
#1349 of 1409 Re: Vibrations [tuscanskipper]
Nov 18, 2009 (12:15 pm)
But my check engine light has not been coming on at all so will this still work for me?
#1350 of 1409 Re: Vibrations [nomopar4me]
Nov 18, 2009 (1:18 pm)
so I did the check engine light thing and nothing happened. The light came on one time then turned off like 5 seconds later... maybe I did it wrong.