20 Most Recent 1990 Lincoln Town Car - Page 7 Questions & Answers

May be a bad ground to the relay,but the code for the bad ground to the e c m,most likely is the knock sensor,not plugged up ,or bad,or the o2 sensor is not grounded,or bad.Some times the e c m will go out upon removing and unplugging things,but I don`t really think,that this is the case.Check the oil pressure switch,it is in circuit for the fuel pump relay.It can cause ,an off,and on,start situation .But the e c m,no ground,usually means the e c m is gone out.Make sure of good tight connections on the knock sensor,and the o2,these ,if loose,can cause the e c m to go out,it doesn`t take much on a loose connection,to kill a computer.I hope this shed some light on the situation.If so,please let us know,thank you.

the speakers have a neg/positive wire make sure you hooked them up right easiest thing to do is hook up the power and start with two speaker wires once you have sound coming from a speaker label them with masking tape .

the best way is to just replace the pump. and if the hoses are old. should replace them also.

if you are going to replace the pump, also replace the two hoses to and from the pump. first remove the belt. then you will need a wheel puller to remove the pulley off the front of the pump. then the pump is held on by 2 or 3 bolts.

Check a spark plug wire fire spark (Autozone has a tool to do this safely for around $10) if no spark test the input wire at the coil, if there is power at the input plug (red wire) Replace the coil!

check pressure lines for leak or damage

Try a couple of things. Disconnect the battery terminal for 10 minutes to see if system reboots better. Use the Keypad and enter the Security code on the door before trying to start it.

If it were driveable I would say to go to Autozone or Oreillys for a free scan. If the car does this several times it would not be the Inertia switch.

It would help if you could determine if you are losing spark or fuel to the engine. The only bolt-on part that controls both is the TPS, Throttle Position Switch. It is located on the drivers side of the airhorn behind all the air filter ductwork. It is the size of a cigarette lighter and has 2 screws and 1 electric connection.

No need to say you obviously created a short circuit when you installed the radio and something got fried.
Could be the dimmer, you could try to bypass that but in all honestly I think it is best left up to a pro.

There are both bands and clutches in your transmission and likely you have an internal pressure loss that is affecting overdrive. Repair cost i can't give you but being as old as it is likely you can get an identical vehicle for what it will cost to repair. You may be able to prolong the inevitable by using a conditioner such as lucas,(only one I've seen that actually does help in some cases) but it can't fix what is worn, so even if it works better, it will only be temporary. I know that isn't exactly what you wanted to hear but that's the way it is.

GET it regassed as your out of R12 or Freon Just go to the AirCon service centre and it 30 minutes it could be done

check the plastic grommet where the kick down cable hooks to side of throttle body...they tend to rot off which causes cable to get out of adjustment. causing miss shifts..good luck... lee

no you can put a new front seal in it

R-12 if it has not been converted to R-134.....should be able to tell by valve on low side pressure fill tube...R-12 is getting hard to find....

possibly the switch is just loose or out of adjustment when u release the emergency brake it comes up and hits a switch that breaks the contact maybe it is barely touching the switch...check to see if its loose or broken where it mounts..adjust according

town cars are not convertables, the roof is a one piece unit. only way to remove that roof is to cut it with a saw or torch.

Unplugging the Connector will cause the Check Suspension light to come on as its listed as a fault as it cant run.

But with it unplugged the compressor shouldnt been able to start. If you want to kill the compressor pull its relay from the engine bay. located above the battery.

But i'd suggest correcting the fault as if those bags do pop your going to end up being grounded. as the rear will drop a fair bit!

1 Check your 50 amp fuses red AC or Blower
2 Check blower fan motor

sounds like one of the rear air bags is leaking and if you get under car and spray with soapy water from spray bottle you can find leak and replace bag or line that is leaking. turning off the pump is not a good idea the rear bags will deflate and cause the car to ride too low and cause damage bottoming out. also if the leak is not fixed soon the air compressor will run too constantly and burn out/wear out and very expansive to replace.

check the fuse
have the relay switch checked,
and the resisror block