« previous next »
Pages: 1 [2]

Author Topic: Amateur mechanics - Car problem  (Read 9076 times)

RoadKingLarry

  • friends
  • Senior Member
  • ***
  • Posts: 21,841
Re: Amateur mechanics - Car problem
« Reply #25 on: March 10, 2012, 10:37:16 PM »
Quote
I'm thinking it's a vacuum leak still.  Wish I could find it.

I wouldn't give up chasing a vacuum leak yet. I've used WD-40 to find a few sucking engine wounds.
Report to moderator   Logged
If ye love wealth better than liberty, the tranquility of servitude better than the animating contest of freedom, go home from us in peace. We ask not your counsels or your arms. Crouch down and lick the hands which feed you. May your chains set lightly upon you, and may posterity forget that you were our countrymen.

Samuel Adams

Jim147

  • friends
  • Senior Member
  • ***
  • Posts: 7,597
Re: Amateur mechanics - Car problem
« Reply #26 on: March 10, 2012, 11:18:15 PM »
The TFI isnormally a good or bad thing. The hall effects seem to have hot problems when they act up.

I have a low mile '91 460 EFI down here if you want to try to shoehorn it in.  >:D

I have the in-laws coming down to take us to lunch for Sherri's birthday tomorrow but I should be able to get free in the later afternoon. I have fuel PSI tester, compression tester, ect. I can bring up.

Does that motor use the plastic intake spacers between the heads and the intake? They can burn through and cause an internal vacuum leak.

For chasing vacuum leaks, I have used water several times. It's not as quick to show as starting fluid but you always have some around.

jim

Also, just found the last piece of the governor that went flying when the cam broke.  [ar15]

Maybe I shouldn't help with your car.  =|
Report to moderator   Logged
Sometimes we carry more weight then we owe.
And sometimes goes on and on and on.

BAH-WEEP-GRAAAGHNAH WHEEP NI-NI BONG

wmenorr67

  • friend
  • Senior Member
  • ***
  • Posts: 12,775
Re: Amateur mechanics - Car problem
« Reply #27 on: March 11, 2012, 01:28:03 AM »
That 460 should fit into that Crown Vic just nicely.  If not I have a 93 F-150 that it would fit in. >:D
Report to moderator   Logged
There are five things, above all else, that make life worth living: a good relationship with God, a good woman, good health, good friends, and a good cigar.

Only two defining forces have ever offered to die for you, Jesus Christ and the American Soldier.  One died for your soul, the other for your freedom.

Bacon is the candy bar of meats!

Only the dead have seen the end of war!

CypherNinja

  • friend
  • Member
  • ***
  • Posts: 467
Re: Amateur mechanics - Car problem
« Reply #28 on: March 11, 2012, 06:36:06 PM »
I had a problem very similar to this with a 1992 Caddy Brougham.

Turned out to be a gummed up Idle Air Bypass in the TBI.

Sorry if that's already been tried, I mostly skimmed the thread.  ;)
Report to moderator   Logged
“Fear of death increases in exact proportion to increase in wealth,” Hemingway once said. Today, many of us have become rich in the currency of cowardice. We have so many things and so few experiences. We are desperate to live as long as possible, not as large as possible. We are so afraid to say goodbye to the world that we never say hello.
-Marty Beckerman (from a Wired article of all things)

Nick1911

  • Administrator
  • Senior Member
  • *****
  • Posts: 8,492
Re: Amateur mechanics - Car problem
« Reply #29 on: March 12, 2012, 08:33:09 PM »
dropped exhaust system - no change
replaced fuel filter - no change

Neighbor Tom (who use to build 302 and 351's for racing) got it to run by spraying wd40 into the intake.  He assures me it's a fuel problem.
Report to moderator   Logged

Nick1911

  • Administrator
  • Senior Member
  • *****
  • Posts: 8,492
Re: Amateur mechanics - Car problem
« Reply #30 on: March 13, 2012, 12:11:29 PM »
This weekend - pulling injectors, ecu and MAP sensor from the junkyard.  I'm at a loss at this point for what else to do.
Report to moderator   Logged

wmenorr67

  • friend
  • Senior Member
  • ***
  • Posts: 12,775
Re: Amateur mechanics - Car problem
« Reply #31 on: March 13, 2012, 01:26:38 PM »
Nuke it from orbit.
Report to moderator   Logged
There are five things, above all else, that make life worth living: a good relationship with God, a good woman, good health, good friends, and a good cigar.

Only two defining forces have ever offered to die for you, Jesus Christ and the American Soldier.  One died for your soul, the other for your freedom.

Bacon is the candy bar of meats!

Only the dead have seen the end of war!

Nick1911

  • Administrator
  • Senior Member
  • *****
  • Posts: 8,492
Re: Amateur mechanics - Car problem
« Reply #32 on: March 13, 2012, 01:40:41 PM »
Quote from: wmenorr67 on March 13, 2012, 01:26:38 PM
Nuke it from orbit.

Aww, but I like this car!
Report to moderator   Logged

White Horseradish

  • friend
  • Senior Member
  • ***
  • Posts: 1,792
Re: Amateur mechanics - Car problem
« Reply #33 on: March 13, 2012, 04:06:46 PM »
Quote from: Nick1911 on March 13, 2012, 12:11:29 PM
This weekend - pulling injectors, ecu and MAP sensor from the junkyard.  I'm at a loss at this point for what else to do.
Have you tested the temp sensor? And if you have, are you sure it was the one for the ECU and not one for the dash?
Report to moderator   Logged
Political tags - such as royalist, communist, democrat, populist, fascist, liberal, conservative, and so forth - are never basic criteria. The human race divides politically into those who want people to be controlled and those who have no such desire.

Robert A Heinlein

drewtam

  • friend
  • Senior Member
  • ***
  • Posts: 1,985
Re: Amateur mechanics - Car problem
« Reply #34 on: March 13, 2012, 06:25:13 PM »
I would tend to suspect a fuel pump before the injectors.
Report to moderator   Logged
I’m not saying I invented the turtleneck. But I was the first person to realize its potential as a tactical garment. The tactical turtleneck! The… tactleneck!

charby

  • Necromancer
  • Administrator
  • Senior Member
  • *****
  • Posts: 29,295
  • APS's Resident Sikh/Muslim
Re: Amateur mechanics - Car problem
« Reply #35 on: March 13, 2012, 06:46:02 PM »
Quote from: drewtam on March 13, 2012, 06:25:13 PM
I would tend to suspect a fuel pump before the injectors.

could be a little of both, weak pump with dirty injectors

Report to moderator   Logged
Iowa- 88% more livable that the rest of the US

Uranus is a gas giant.

Team 444: Member# 536

drewtam

  • friend
  • Senior Member
  • ***
  • Posts: 1,985
Re: Amateur mechanics - Car problem
« Reply #36 on: March 13, 2012, 07:30:26 PM »
Quote from: charby on March 13, 2012, 06:46:02 PM
could be a little of both, weak pump with dirty injectors



Yeah, good point. Especially if the injectors are spraying the walls too much or dribbling out now and not getting good atomisation while cold. When the engine is hot, it may cause the wet port walls to evaporate and make the problem go away.
Report to moderator   Logged
I’m not saying I invented the turtleneck. But I was the first person to realize its potential as a tactical garment. The tactical turtleneck! The… tactleneck!

brimic

  • friends
  • Senior Member
  • ***
  • Posts: 14,270
Re: Amateur mechanics - Car problem
« Reply #37 on: March 13, 2012, 09:37:55 PM »
[quotecould be a little of both, weak pump with dirty injectors][/quote]

My TB gets an engine misfire/injector code once or twice a year, clearing the code with the OBD scanner only means the code pops up again the next day. Neighbor, who is a mechanic advised me to buy a quart of GM Top Engine Cleaner (~35) and dump it into the gas tank. Code usually goes away 1/2 tank of gas later and comes back on 6-8 months later.
Report to moderator   Logged
"now you see that evil will always triumph, because good is dumb" -Dark Helmet

"AK47's belong in the hands of soldiers mexican drug cartels"-
Barack Obama

Jim147

  • friends
  • Senior Member
  • ***
  • Posts: 7,597
Re: Amateur mechanics - Car problem
« Reply #38 on: March 13, 2012, 10:05:38 PM »
This weekend is pretty free for me. If you need something just ask. I think I owe you one or more.

jim
Report to moderator   Logged
Sometimes we carry more weight then we owe.
And sometimes goes on and on and on.

BAH-WEEP-GRAAAGHNAH WHEEP NI-NI BONG

Nick1911

  • Administrator
  • Senior Member
  • *****
  • Posts: 8,492
Re: Amateur mechanics - Car problem
« Reply #39 on: March 15, 2012, 10:24:18 PM »
Got it!

Mass Air Pressure sensor.  (Note: not MAF sensor)
Report to moderator   Logged

drewtam

  • friend
  • Senior Member
  • ***
  • Posts: 1,985
Re: Amateur mechanics - Car problem
« Reply #40 on: March 15, 2012, 10:28:54 PM »
Quote from: Nick1911 on March 15, 2012, 10:24:18 PM
Got it!

Mass Air Pressure sensor.  (Note: not MAF sensor)

Huh. Thanks for posting the answer/resolution. One more thing from which to learn.
Report to moderator   Logged
I’m not saying I invented the turtleneck. But I was the first person to realize its potential as a tactical garment. The tactical turtleneck! The… tactleneck!

charby

  • Necromancer
  • Administrator
  • Senior Member
  • *****
  • Posts: 29,295
  • APS's Resident Sikh/Muslim
Re: Amateur mechanics - Car problem
« Reply #41 on: March 15, 2012, 10:43:19 PM »
Quote from: Nick1911 on March 15, 2012, 10:24:18 PM
Got it!

Mass Air Pressure sensor.  (Note: not MAF sensor)

Awesome!
Report to moderator   Logged
Iowa- 88% more livable that the rest of the US

Uranus is a gas giant.

Team 444: Member# 536

Harold Tuttle

  • Professor Chromedome
  • friend
  • Senior Member
  • ***
  • Posts: 8,069
Re: Amateur mechanics - Car problem
« Reply #42 on: March 16, 2012, 08:35:59 AM »
The replacement of a 50 dollar part is brought to you today by 700 dollars of diagnosis.

Report to moderator   Logged
"The true mad scientist does not make public appearances! He does not wear the "Hello, my name is.." badge!
He strikes from below like a viper or on high like a penny dropped from the tallest building around!
He only has one purpose--Do bad things to good people! Mit science! What good is science if no one gets hurt?!"

Jim147

  • friends
  • Senior Member
  • ***
  • Posts: 7,597
Re: Amateur mechanics - Car problem
« Reply #43 on: March 16, 2012, 10:18:37 AM »
Glad you got it taken care of.

Since you don't need it, I wounder if I can shove that 460 in the tractor.

jim
Report to moderator   Logged
Sometimes we carry more weight then we owe.
And sometimes goes on and on and on.

BAH-WEEP-GRAAAGHNAH WHEEP NI-NI BONG

wmenorr67

  • friend
  • Senior Member
  • ***
  • Posts: 12,775
Re: Amateur mechanics - Car problem
« Reply #44 on: March 16, 2012, 10:36:01 AM »
Quote from: Jim147 on March 16, 2012, 10:18:37 AM
Glad you got it taken care of.

Since you don't need it, I wounder if I can shove that 460 in the tractor.

jim

Stock?
Report to moderator   Logged
There are five things, above all else, that make life worth living: a good relationship with God, a good woman, good health, good friends, and a good cigar.

Only two defining forces have ever offered to die for you, Jesus Christ and the American Soldier.  One died for your soul, the other for your freedom.

Bacon is the candy bar of meats!

Only the dead have seen the end of war!

dogmush

  • friend
  • Senior Member
  • ***
  • Posts: 13,936
Re: Amateur mechanics - Car problem
« Reply #45 on: March 16, 2012, 06:35:00 PM »
Quote from: Nick1911 on March 15, 2012, 10:24:18 PM
Got it!

Mass Air Pressure sensor.  (Note: not MAF sensor)

Cool, glad you got it.  So it was a fuel problem.

For future reference, The MAP sensor on early FI systems is a Manifold Absolute Pressure sensor.  It was replaced by a MAF, or Mass Air Flow sensor.  MAP's are used in conjunction with an Inlet Air Temperature sensor and engine speed information to find the mass air flow rate by speed-density calculations.  Ford switched to a MAF in the early 90's (depending on year).
Report to moderator   Logged

Brad Johnson

  • friend
  • Senior Member
  • ***
  • Posts: 18,092
  • Witty, charming, handsome, and completely insane.
Re: Amateur mechanics - Car problem
« Reply #46 on: March 17, 2012, 08:19:52 PM »
IIRC the 460s stayed with speed density injection til they were replaced by the 6.8L V10 in the late 90's.  Only the CA models got mass air.

Brad
Report to moderator   Logged
It's all about the pancakes, people.
"And he thought cops wouldn't chase... a STOLEN DONUT TRUCK???? That would be like Willie Nelson ignoring a pickup full of weed."
-HankB
Pages: 1 [2]
« previous next »