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1982 pontiac engine problems

I have a 1982 pontiac trans am recaro edition with a lu5 v8 5.0L Cross-Fire Injection engine and and having a couple of problems when you first start it it idles fine but the check engine light keeps flashing on and off and when you press the brake to put it in gear it shuts off and wont stay on again. i think it might be a vacuum problem or maybe the maf or something.

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5 Suggested Answers

  • 4369 Answers

SOURCE: Overdrive light flashing trans struggles to shift

probably the vehcile speed sensor

Posted on Feb 27, 2009


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SOURCE: engine wont idle unless you keep your foot on the gas pedal

First, try a new accelerator pump. They're less than $10 and easy to install. On the side of the carburator, near the linkage. It's simple a small rubber diaphragm.

Posted on Mar 15, 2009

emissionwiz
  • 61168 Answers

SOURCE: IDLE PROBLEM

Here are some of the causes of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on Apr 14, 2009

  • 2002 Answers

SOURCE: Pontiac Parisienne

It should be a bolt-in. Check the overall length of the new transmission against the length of the old one. Sometimes the tail shaft can be different lengths and that may mean you will need a different driveshaft. If the difference is an inch or less you should be okay. Hope this helps.

Posted on Jan 22, 2010

motor1258
  • 6674 Answers

SOURCE: I have a 1982 Pontiac Trans Am, everything is

What type and model Carb is it? You may have vacuum operated secondaries.

Posted on May 11, 2010

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Number 3 cylinder miss fire


This is Direct Injection engine. More than like you have excessive carbon built up on the intake valve on Cyl. #3. The only way to fix this is to remove the intyake and do a carbon clean, or remove the head completely for good access for a proper cleaning. This is not covered under warranty because GM claims that this falls under the reccomended service schedule. Direct Injection Engines can have this problem with as little as 6,000 miles on them and still carry no warranty. Ethanol fuel does not help this engine at all and contributes to this problem eventhough it will have this problem anyway.

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I have a 1982 Pontiac Trans Am, everything is


What type and model Carb is it? You may have vacuum operated secondaries.

May 09, 2010 | Cars & Trucks

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Engine shuts down anytime gas pedal is floored corvette is a 1982 crossfire.if you ease up on pedal engine then gains rpm as normal.idle is fine .seems as if when vacuum drops that is what causes it to...


Possible causes, and in an order of where to check first:

1.Fuel filter - Located along the Right frame rail, close to passenger door area.

2.Fuel pump - Located inside fuel tank.
[Electric fuel pump. Pressure should read between 9-13 PSI.
The Cross-Fire Injection unit, is in reality,
Two- Throttle Body Injection units. TBI. ]

3.Fuel strainer for fuel pump. ('Fuel sock')
Located in fuel tank, attached to fuel pump.
The fine mesh of this sock can become restricted over time, by 'sludge' that has built up in the bottom of the fuel tank.
(
'Sludge'. Dirt mixed with moisture that builds up inside a fuel tank. Additives for gasoline that also add to the sludge)

4.Air cleaner element. (Added, because many times this is overlooked by the owner, and can cause bogging down when accelerating hard, if severely dirty. Added as fourth in the list instead of First, but may be the First area to look)

5..Cross-Fire Injection System, (Twin Throttle Body Injection System)
This injection system is controlled by an ECM, (Engine Control Module)
This same ECM also controls the emissions system. (CCC. Close Coupled Catalysts)

It is for this reason, of interaction of the injection, emissions, and ignition systems, that only a qualified, professional technician can diagnose problems with the unit.

Computerized diagnostic equipment, along with the knowledge, and training required, is needed.


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Motor dies when put into gear


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Key to this is careful testing...there are too many factors that can cause an identical problem. Changing parts by guesswork can and will get very expensive very fast.

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1 Answer

1982 240 volvo


Hello,

Your engine does NOT have a carburator. Unless the engine was replaced by an earlier one, 1982 Volvo's were fuel injected.

This is an older fuel injection design that is a "constant flow" type system ie. there is a constant spray of fuel while the engine is running. Newer fuel injection systems, including Volvo, are "demand" type systems where fuel is only sprayed through the injectors when the engine electronics signal it to do so.

In any case, this older system is very sensitive to vacuum leaks. Check all your hoses for splits, hardening or connection looseness. Check the seals on each fuel injector (there are 4, one for each cylinder). If they are hard or cracked, replace them.

The later problem was the case on my 1981 240 which had the same problem. New fuels injector seals and the car runs perfect.

Good Luck,

Dr of Motors

Sep 09, 2008 | 1982 Volvo 240 Series

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