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1989 Lincoln Town Car Lincoln tow car running rough

Tiny
PSCHLOBOHM
  • MEMBER
  • 1989 LINCOLN TOWN CAR
  • 86,000 MILES
I have a 1989 lincoln town car with 86k original miles I have 2 catalatic converters clogged I would like just to take them off and hollow them out will this give me a CEL or not? I dnt think so because obd1 no O2 sensore after cat just one before
Part history just done within week. Car is running rough dies after starts the cars surging runs good after warms up but its 110 here in texas. Its not throughing any codes replaced tps and tested all other sensors volts ohms etc via the book replaced all spark plugs and wires with oem replaced air filter, fuel filter, cap and roter, coil, oil filter oil change pens straight 40, run super all the time gets a can of b-1 Once a month did the timing on it was off 15 degrees now its spot on but still runs bad chaged the trans filter as well I turned up the throttle to about 700 rpm supposed to be 250-550 its running alot better now I belive but this is just masking the real problem
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Friday, June 21st, 2013 AT 11:40 AM

6 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
We really cant advise on this because it is against the law to remove converters or alter. But it won't throw a code but scan for codes and check fuel pressure for your problem. Also try cleaning throttle plate on both sides with choke cleaner and iac hole as well
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Friday, June 21st, 2013 AT 12:13 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
Yep, $25,000 fine for that.
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Friday, June 21st, 2013 AT 1:15 PM
Tiny
PSCHLOBOHM
  • MEMBER
  • 3 POSTS
I am aware its illegal I took converters off today and just ran straight from heads to test it and it runs the same and on further inspection cats not clogged so I am still at a loss I checked all the sensors there all at the right values all working fine car not throwing codes any ideas also replaced iac today but nothing
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Friday, June 21st, 2013 AT 6:23 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Re read my first reply you didn't do everything I said
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Saturday, June 22nd, 2013 AT 5:48 AM
Tiny
PSCHLOBOHM
  • MEMBER
  • 3 POSTS
I checked the fuel pressure with fuel pressure tester its with in the right values I checked every injector there all working I dropped every cylinder there all firing as well I did how ever I did check the coil (only year old) and am getting the orange spark so im assuming one of the stages is out ill install new coil tomorrow. I am also thinking I got bad fuel its possible but I fuel up at same station for a year or so always super. I went today and filled it up (was on empty thought I was going to drop fuel tank) at a different fuel station super and am trying a oil based fuel injector cleaner Lucas I usually use b -12 so we will see how it goes any other thoughts or suggestion would be greatly appreciated thank you
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Monday, June 24th, 2013 AT 3:24 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Try cleaning throttle plate on both sides and iac hole with choke cleaner your plate may be sticking. Then have apro run injector cleaner through it as it's different stuff and the fuelpump is shut off so no gas goes in.
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Monday, June 24th, 2013 AT 3:32 PM

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