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Thread: 1988 Lincoln Town Car

  1. #221

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    Hmm true I forgot the po had an 88, my bad.


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  2. #222
    88 LTC nfldfordltd's Avatar
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    Quote Originally Posted by nfldfordltd View Post
    Still idles like shit. I posted a video on facebook of it a little while ago:
    https://www.facebook.com/josh.sincla...2868632735354/
    No codes related to how it would run (ie MAP, TPS, O2, etc.)
    Also likes to really bog, stumble and backfire under load at low RPM under WOT (stop to 25 MPH).

    So yesterday I did the following things to try and sort it out:
    Changed the plugs for new Autolite Copper plugs
    Changed the TFI module
    Changed the ignition coil
    Changed the MAP sensor (with a used one I had laying about)
    Checked TPS voltage. About .9v at idle position, just over 4v at WOT. New TPS and MAP ordered just for the hell of it.
    Switched O2 sensor connectors from side to side
    Filled up with premium gas (gas that was in the car was what sat in the tank all winter)

    Result was a *slightly* smoother idle, but now it runs like absolute garbage under part throttle while driving it. Feels like the plug wires have been switched around and it's wired wrong. Constantly bucking, misfiring and backfiring. It's been hard on gas since the HO conversion, which is also when it started running bad. Old engine was an environmental disaster with the oil leaks, it rattled and clattered while cold but ran silky smooth and still pulled hard on the bottom end, and was good on gas. New setup is the opposite; it idles without knocking, pulls hard at speed, bogs and runs like shit at idle and down low, burns gas like a champ, and does not use any oil.
    During the process of switching the O2 connectors, I broke the orange ground wire off the back of the intake manifold. But, the driveability problems I described were like it both before and after the ground wire got broken.

    93 truck engine block with E7 heads
    Original upper intake manifold, EGR spacer bored out to 58mm to match the 86 Mustang TB that has been reversed for LH intake panther setup.
    IAC is new within last 5 years, cleaned annually (it's never dirty when removed, entire intake system is clean since I fixed the coolant leak)
    New 19 lb fuel injectors. Fuel pressure and flow OK
    New 155 lph BBK fuel pump
    86 Mustang 5.0 HO camshaft
    All new engine internals. Valvetrain new except for valves and valve springs
    ECM is a Lincoln Mark VII part, unsure of exact year or three-digit ID code. Cruise control still works
    EGR and all related components deleted. No EGR codes from reader
    Cats cleaned out, smog pump and all related components are removed
    Lincoln Logs for headers
    NTK O2 sensors <2 years old
    New VSS

    Any ideas? I'm starting to lose my patience with this...."do an HO conversion" they said, "it will be fun" they said...nothing but headaches since I did it. Can't get it to run right now for about two years.

    I understand the HO is going to be a dog on the bottom end off the line, especially with my 3.08 gears due to the cam's higher revving tendencies than the original lopo unit. But that shouldn't include backfiring and abysmal fuel economy, rough idling, stalling, etc.

    Thanks in advance
    So I had a long night in the garage tonight.

    Pulled the O2 sensor wiring harness up from below, which was easy give the orange ground wire was broken off from yesterday's misadventures.

    I cut the heat resistant sleeves off the harness to find one of the wires was broken inside of it. I had tried switching the O2 plugins from side to side already, no difference was made to the way it ran. Broken wire on the other hand...

    So I fixed that wire, put the heat resistant sleeve back on the loom and double checked the EVTM to make sure I had the correct side plugged in to the O2 sensor. Reattached the orange ground wire and put that to bed. Good job.

    Started it up, took it for a drive to bring it to operating temperature and set the IAC/TPS. surging idle seemed slightly better but did it ever misfire and backfire badly.

    Took out each plug one by one and found the #3 plug's electrode was smashed into the plug itself. The I remembered that I dropped it when I was changing the plugs over the weekend. Pried it apart and set the gap. Double checked the tightness of the plug wires and took it for a spin.

    OMG! It ran the best it ever did since I did the HO conversion! Pulled hard and ran smooth as could be!

    Stopped at the grocery store on the way home, picked up a couple things. Got home and proceeded to change the oil after sitting all winter and driving the shit out of it for the past few days....

    After the oil was changed, I turned the key and got a definitive "I'm not going to start for you now" click. Click, Click click click. Not a gig.

    Three solenoids, two hours and one very upset hombre later, I found the problem. The starter cable terminal was loose on the starter. No big deal, just tighten it up, right?

    Wrong.

    It just spun around in circles. Stripped like the girls at The Brass Rail.

    I then found a small nut and bolt combo that almost worked to tighten up the loose cable. I'm not happy with how not completely snug it is, but at least it started for me again.

    Wouldn't care so much except I only just took it out of winter storage not so long ago and I have to go on a 3800 km (2400 mile) trip in it this coming weekend.

    This is starting to smell like an episode of Roadkill.....

    Summer car-> 1988 Lincoln Town Car, triple blue, 267,xxx km. Out for 2017, new HO 5.0 in and running. Bought 2006/08/22. June 2017 PotM!
    Winter vehicle-> 1996 Ford F-150 XL 4x4, orange, 302,xxx+km. AKA "King Billy". Takes the beating like no vehicle should ever have to. Bought 2013/11/26.

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  3. #223
    I'm an air-conditioned gypsy gadget73's Avatar
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    which wire colors are on what side of your O2 harness?

    so basically running messed up because of a bum plug? Yeah, it happens. Under all that electronic control its still an engine designed in the 1950s.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  4. #224
    88 LTC nfldfordltd's Avatar
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    Quote Originally Posted by gadget73 View Post
    which wire colors are on what side of your O2 harness?

    so basically running messed up because of a bum plug? Yeah, it happens. Under all that electronic control its still an engine designed in the 1950s.
    I think the LH O2 sensor has a dark blue and yellow wire to it. Don't recall the RH one.

    Right? I mean, what are the odds of dropping it fair on the electrode and not noticing it prior to installation?

    Ugh. I just hope it's all cured for a few weeks until I can get all my junk in one place again...the joys of moving.

    Summer car-> 1988 Lincoln Town Car, triple blue, 267,xxx km. Out for 2017, new HO 5.0 in and running. Bought 2006/08/22. June 2017 PotM!
    Winter vehicle-> 1996 Ford F-150 XL 4x4, orange, 302,xxx+km. AKA "King Billy". Takes the beating like no vehicle should ever have to. Bought 2013/11/26.

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  5. #225
    GMN Regular DerekTheGreat's Avatar
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    Quote Originally Posted by gadget73 View Post
    ...so basically running messed up because of a bum plug? Yeah, it happens. Under all that electronic control its still an engine designed in the 1950s.
    That to me is the beauty of stuff like this and mainly why I run them daily.
    1985 LTD Crown Victoria - SOLD
    1988 Town Car Signature - Current Party Barge

  6. #226
    The Brown Blob 87gtVIC's Avatar
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    Cool beans. Burn some rubber.
    ~David~

    My 1987 Crown Victoria Coupe: The Brown Blob
    My 2004 Mercedes Benz E320:The Benz

    Quote Originally Posted by DerekTheGreat View Post
    But, that's just coming from me, this site's biggest pessimist. Best of luck

  7. #227
    88 LTC nfldfordltd's Avatar
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    Heater core #5 died yesterday. It's not exploded but a dribble is leaking out of the plenum and steaming the windshield enough to annoy me.
    Rock Auto only has cheap cores in stock now, really conflicted about what to do. Tempted to try one of these:

    http://www.thebrassworks.net/shop/He...578aee373c0d8f

    Has any of ye ever tried these in the past? If so, is it worth the money?

    Summer car-> 1988 Lincoln Town Car, triple blue, 267,xxx km. Out for 2017, new HO 5.0 in and running. Bought 2006/08/22. June 2017 PotM!
    Winter vehicle-> 1996 Ford F-150 XL 4x4, orange, 302,xxx+km. AKA "King Billy". Takes the beating like no vehicle should ever have to. Bought 2013/11/26.

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  8. #228
    all the CFI are belong to me
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    Quote Originally Posted by nfldfordltd View Post
    Heater core #5 died yesterday. It's not exploded but a dribble is leaking out of the plenum and steaming the windshield enough to annoy me.
    Rock Auto only has cheap cores in stock now, really conflicted about what to do. Tempted to try one of these:

    http://www.thebrassworks.net/shop/He...578aee373c0d8f

    Has any of ye ever tried these in the past? If so, is it worth the money?
    I lack the history of the other ones and their failure modes, so forgive me:

    I think that assuming "cheap ones are bad ones" is not the best approach. Also consider that RockAuto pricing will always be "cheap" because that's how they roll. I also think that buying a soldered brass/copper heater core (for incredible money) is a mistake, when it is an established fact that they don't last as long as aluminum ones. The caveat is aluminum ones are less friendly to some flushing chemicals and if you are the type to flush the system every couple years, you can quickly murder your new investment.

    I am also reasonably sure the one you linked will not fit. I believe that's the 90+ item with a common application data error which suggests it fits 89, but 89 uses the old one.

    Frequent heater core failure is probably more a symptom of a bigger systemic issue than it is an indicator of heater core quality, IMHO. You might have issues like electrolysis eating the core material away.
    Last edited by kishy; 06-05-2019 at 11:54 AM.

    83 GM 2dr | 84 TC POTM 1/2017 & 4/2019 | 85 CS | 85 Ranger | 91 GM POTM 12/2017 | Junkyards

  9. #229
    I post a lot...
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    Do you have a coolant pressure restrictor in place?
    "X" car 89 Colony Park LS Mods>Engine delete, SS duals magnaflow hflow cats, 2010 Must GT mufflers, auto air shocks, Posi, Tran cooler, big front brakes, 03+ rear disks, Large 3g alt, Tripminder, GS grill, 86 seats, 16" HPP wheels, winter boots=96 Cartier wheels, 215-65/16 Goodyear ULTRA GW3 snows, pi rear sway, alum driveshaft.
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  10. #230
    I'm an air-conditioned gypsy gadget73's Avatar
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    Check the voltage in the coolant. If you've got some electrical grounding problem, you may have electrolysis going on and that will dissolve the heater cores too.

    https://www.northernfactory.com/knowledge/electrolysis

    Normally the heater core and radiator are not connected to electrical ground on these, so make sure nothing has changed in that regard. Missing or crusty battery to body or engine to body grounds can cause you trouble though.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

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