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Chrysler LHS

1361 messages,  Last post on Dec 03, 2009 at 8:56 PM

You are in the Chrysler LHS Forum. Your Hosts are pat & karens

What is this discussion about? Chrysler LHS, Sedan


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#1352 of 1361
AIR COND, POWER WINDOWS WONT WORK. by tsurnick
Nov 25, 2009 (3:10 pm)
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I have a new Problem with my 94 Chrysler LHS. Air conditioning doesnt work and the air panel (where the temp shows) will not come on either. The power windows stopped working at the same time. The air bag light and the ABS light on the instrument panel are steady on as well. I have checked all the fuses and they are all good. what can I do next?
#1353 of 1361
99 LHS overheating - by jrscars
Nov 30, 2009 (6:34 am)
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ok here goes. I bought this car from a friend for my wife, they drove the car 80 miles to deliver it. I cleaned it up and gave to her as a B-day present. first time she drove it she got about 15 miles and it overheated, the radiator had cracked. I installed a used radiator that was in real nice condition that had to have been replaced because it WAS NOT a mopar radiator. Filled it with coolant, opened the little air bleed on the engine. Let it sit and run, took a good while to slowly come up to temp (was only 45 degree's outside) the fans cycled a couple times, all was good. Went and put some gas in it, and decided to run to the next town, 7 miles at hwy speed, temp was great until about half way back, then shot up to hot. While I was sitting waiting for it to cool off I found a new t-stat in the glove box, made me wonder if this was a pre-existing issue. I got the car home and changed the T-stat, filled with coolant, let it warm up, cycled the fans, took it for a ride, stayed closer to home, slower speeds, 30 to 40 mph. temp was fine, hit the hwy from a side road, 2 miles into town, mile and a half at hwy speed temp started to climb, rolled into town and pulled over. popped the hood quick, coolant bottle was boiling away, intake plenum was warm, but cool enough the lean on with your hand, and reaching through the cooling fan blades the radiator was ice cold. Anyone have this problem? Water pump? Air in the system cavitating? I'm hoping not a head gasket, but also thinking its NOT a head gasket based on the lenght of time it takes to get up to operating temp idling, no steam cloud out the back, and temp does not emediately start to climb when you start to drive the car, takes a few miles...
#1354 of 1361
Re: 99 LHS overheating - [jrscars] by tuscanskipper
Nov 30, 2009 (6:52 am)
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Replying to: jrscars (Nov 30, 2009 6:34 am)

Check the coolant for the presence of combustion gasses. I bet this is a head gasket, warped and or cracked heads. Modern engines seldom come back from an over heating episode.
 
The other possibility is that your used radiator is scaled up.
 
Checking for exhaust gasses in the coolant is you first step and should have been checked for after you changed the radiator.
#1355 of 1361
Re: 99 LHS overheating - [tuscanskipper] by jrscars
Nov 30, 2009 (7:29 am)
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Replying to: tuscanskipper (Nov 30, 2009 6:52 am)

Going to check that tonight, one of the guys in my shop has an exhaust sniffer. Still hoping it isnt obviously, but I hadnt ruled it out yet either.
#1356 of 1361
Re: 99 LHS overheating - [tuscanskipper] by jrscars
Dec 01, 2009 (6:03 am)
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Replying to: tuscanskipper (Nov 30, 2009 6:52 am)

Well I did a little more investigating last night. Borrowed a cooling system purge tool and a CO2 sniffer from one of the guys in my shop, the Purge tool is only a deep funnel with a radiator cap at the bottom so you can overfill the system and let it purge any air and keep full, I purged the heck out of the system and let it run, the funnel was almost empty as the temp started to come up, on the second cycle of the cooling fans the coolant level rose to the point of overflowing this big funnel and was bubbling and boiling like crazy!! Yet the temp gauge read normal
 
with it boiling away I put the CO2 snffer to work making sure not to suck up any coolant, only the steam vapor... no signs of exhaust, shut the car off and the engine cooled quickly enough to empty the funnel into the engine, still steaming like crazy, so I put the rubber tip of the sniffer right in the bottom of the funnel so I know all it was sniffing was coolant steam, still no exhaust... which makes me a happy camper in that I dont have to tear into the engine.
 
So, either that nice clean looking used radiator is plugged up, or the water pump isnt circulating. I'll run a garden hose through the radiator when I pull the front covers off to change the water pump.
#1357 of 1361
Re: 99 LHS overheating - [jrscars] by tuscanskipper
Dec 01, 2009 (6:39 am)
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Replying to: jrscars (Dec 01, 2009 6:03 am)

When you change the water pump, change the timing belt. Change interval for timing belt and water pump is every 90.000 miles on that vehicle. You have to take out the fan assembly to change these item on those vehicles.
 
Good news about the exhaust gasses. One other thing you have to correctly orientate the thermostat. As in those vehicles if the thermostat is not rotated correctly it impedes water flow.
#1358 of 1361
Re: 99 LHS overheating - [tuscanskipper] by jrscars
Dec 02, 2009 (5:49 am)
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Replying to: tuscanskipper (Dec 01, 2009 6:39 am)

I agree on the timing belt at the same time. I feel confident the T-stat is in right, there was a little notch in the stat base the lined up with a corresponding locating pin (for lack of a better way to say it) in the stat housing. and I used just a dab of silicone to hold the stat in place while i put it back on the car.
#1359 of 1361
Re: 99 LHS overheating - [jrscars] by tuscanskipper
Dec 02, 2009 (11:55 am)
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Replying to: jrscars (Dec 02, 2009 5:49 am)

Just a couple of other things. I forgot to tell you, you also have to remove the belt pulley to change the water pump and timing belt.
 
When you drain the water next time and refill, make sure the heater is full on, as otherwise you will never get free of air locks.
#1360 of 1361
Re: Vibrations [tsurnick] by tsurnick
Dec 03, 2009 (8:45 pm)
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Replying to: tsurnick (Nov 18, 2009 7:04 am)

My 1994 LHS is having a new problem. My abs and air bag lights are steady on and my power windows are not working as well as my air/heat panel. no power to that display as well. I have done some other research and got an answer that it might be the ignition switch. the Person that told me this is an retired chrysler mech. he said that the blower motor pulls so many amps that it is not uncommon for the switch to go bad since it has alot of other things connected to it. he said that I might even notice some burning on the switch if i pull the cover off of it. I wanted to find out what you all thought of this? any other ideas as well. I dont have the money to go to the dealer right now and am really needing the heat to work right now incase i need to defrost windows and such since the cold weather is among us. please let me know if you have any more ideas. thanks
#1361 of 1361
Re: Vibrations [tsurnick] by tuscanskipper
Dec 03, 2009 (8:56 pm)
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Replying to: tsurnick (Dec 03, 2009 8:45 pm)

If an old Mechanic has seen this, it is a good place to start.
 
I have also seen reports that this problem can be caused by a grounding block behind the dash going bad.
 
Strange as it seems, this is a problem that could cost more than the car is worth to sort out and fix.
 
I would start with the ignition switch and see what you find.

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