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Cynthia Fenn Posted on Aug 29, 2016
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88 Dodge ram D100 318 v8 automatic lacks power at times boggs down but then might run good..no catalytic converter..had it taken off about 10 weeks ago.

Air and Fuel filters changed...plugs and wires... Distributor Cap...all done in this past week.

  • 13 more comments 
  • Cynthia Fenn Aug 29, 2016

    We removed the catalytic convertor and truck seemed fine for about 10 weeks...could this have anything to do with it?

  • Thomas Perkins
    Thomas Perkins Aug 29, 2016

    Your fuel injectors may be clogged.Here's a link on testing them,Autozone may have a loaner tool you need to test it.Usually the dealer will charge about a 100 bucks to cleanhttp://www.autozone.com/repairinfo/repai...

  • Thomas Perkins
    Thomas Perkins Aug 29, 2016

    Here's another link on your fuel injectors Cynthiahttp://www.autozone.com/repairinfo/repai...

  • Thomas Perkins
    Thomas Perkins Aug 29, 2016

    Here's something else to look athttp://www.autozone.com/repairinfo/repai...

  • Thomas Perkins
    Thomas Perkins Aug 29, 2016

    Also check this out,just trying to helphttp://www.autozone.com/repairinfo/repai...

  • Thomas Perkins
    Thomas Perkins Aug 29, 2016

    here's something else to look athttp://www.autozone.com/repairinfo/repai...

  • Thomas Perkins
    Thomas Perkins Aug 29, 2016

    here's the throttle body sensorhttp://www.autozone.com/repairinfo/repai...

  • Thomas Perkins
    Thomas Perkins Aug 29, 2016

    here's the fuel pressure regulatorhttp://www.autozone.com/repairinfo/repai...

  • Thomas Perkins
    Thomas Perkins Aug 29, 2016

    And here's the fuel pumphttp://www.autozone.com/repairinfo/repai...

  • Thomas Perkins
    Thomas Perkins Aug 29, 2016

    Here's how to relieve the fuel pressurehttp://www.autozone.com/repairinfo/repai...

  • Thomas Perkins
    Thomas Perkins Aug 29, 2016

    The Throttle Body Injection (TBI) system is used on 1988 V6-238 and V8-318 engines. The system is controlled by a pre-programmed digital computer known as the Single Module Engine Controller (SMEC). The SMEC controls ignition timing, air/fuel ratio, emission control devices, charging system and idle speed. The SMEC constantly varies all settings to meet changing operating conditions.

    Various sensors provide the input necessary for the SMEC to correctly regulate the fuel flow at the fuel injector. These include the manifold absolute pressure, throttle position, oxygen sensor, coolant temperature, charge temperature, vehicle speed (distance) sensors and throttle body temperature. In addition to the sensors, various switches also provide important information. These include the neutral-safety, heated backlite, air conditioning, air conditioning clutch switches, and an electronic idle switch.

    All inputs to the SMEC are converted into signals sent to the power module. These signals cause the power module to change either the fuel flow at the injector or ignition timing or both.

    The SMEC tests many of its own input and output circuits. If a fault is found in a major system, this information is stored in the SMEC. Information on this fault can be displayed to a technician by means of the instrument panel power loss (check engine) lamp, or by connecting a diagnostic read out tool and reading a numbered display code which directly relates to a specific fault.

  • Thomas Perkins
    Thomas Perkins Aug 29, 2016

    Here's one for page to look athttp://www.autozone.com/repairinfo/repai...

  • Thomas Perkins
    Thomas Perkins Aug 29, 2016

    Here's a link to your vacuum lineshttp://www.autozone.com/repairinfo/repai...

  • Thomas Perkins
    Thomas Perkins Aug 29, 2016

    It may be cheaper to go to the Dodge dealer and let them put it on a machine,I think they charge 75 bucks.

  • Randy Ohler Sep 07, 2016

    It's an 88 Thomas. Cycle the key 3 times. Pops the codes threw the engine light. $75 for a dealer...$200+ here in Indy.

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Randy Ohler

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  • Dodge Master 14,585 Answers
  • Posted on Aug 29, 2016
Randy Ohler
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Start looking at the carburetor. Using a fuel cleaner will probably make it worse. But the first thing I do on older engines is a compression test.

  • Cynthia Fenn Sep 07, 2016

    Randy gas sprays in the carb then stops?? (Husband said) Compression test? And have also used Sea Foam and carb cleaner...I know he has the plug gap at .030

  • Randy Ohler Sep 07, 2016

    Compression test is pulling the spark plugs and check the pressure for each cylinder when turn over the engine. I don't know the numbers, but anything under 90 PSI is not good.

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Thomas Perkins

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  • Dodge Master 15,088 Answers
  • Posted on Aug 29, 2016
Thomas Perkins
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No,the cat is not the problem,removed mine,got more power and better gas mileage,what size engine do you have,when was the last time you changed the fuel filter.

Testimonial: "It's a 318 ... changed the air and fuel filter.. distributor cap..lugs and wires all-in this past week. Seems to be getting worse"

  • Cynthia Fenn Aug 29, 2016

    318...just changed the fuel and air filter and the distributor cap.. plugs and wires.

  • Cynthia Fenn Aug 29, 2016

    It's a 318 V8 aotomatic

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peachy me

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  • Contributor 13 Answers
  • Posted on Aug 29, 2016
peachy me
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Tune up and or some carburator cleaner and fuel treatment

  • peachy me Aug 29, 2016

    Tune up and or some carburator cleaner and fuel treatment

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5 Related Answers

Anonymous

  • 702 Answers
  • Posted on Jun 10, 2008

SOURCE: replace a catalytic converter for a 1999 dodge stratus

The cat is located just off of the exhaust manifold. You have to remove things to get out of the way. Loosen down pipe to converter and unclamp the converter and it should pull right out. Use a good penetrating oil to help loosen the down pipe bolts.

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Anonymous

  • 1959 Answers
  • Posted on Jun 01, 2009

SOURCE: do I need a catalytic converter

Yes but there could be other causes. A sticky fuel injector, bad fuel pump etc. Other signs of a bad catalytic converter are a smelly sulphur exhaust, a very hot exhaust throwing heat from the middle of the car. Unless there's a lot of miles on your car, I'd be surprised if it were a bad Cat. Hope this answers your question. Best of luck.
Greg

Anonymous

  • 3092 Answers
  • Posted on Dec 28, 2009

SOURCE: P2097 Error code in 2006 Dodge Grand Caravan, which O2 Sensor?

The one before the catalytic, on the side where cylinder # 1 is at. close to the exhaust mag.

airjer995

Jeremy W.

  • 5332 Answers
  • Posted on Mar 04, 2011

SOURCE: How do you delete catalytic

Than you will need to purchase a O2 Simulator that replaces the downstream o2 sensor and fools the computer into thinking the cat is there and working. There are several companies that make these. You can google search ( "O2 simulator" ) for these items and decide which one would work best for you.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Testimonial: "thank you very much for the explaining ,,,"

Anonymous

  • 4803 Answers
  • Posted on Jun 14, 2011

SOURCE: i have a 02 dodge grand caravan sport with

Do you mean P0351, P0352, P0700? (The "P" makes a HUGE difference - it could also be a "C" a "B" or a "U") When you post fault codes, please be sure to post the ENTIRE fault code.

Anyway, P0700 is a generic code that is output by the Engine Control Module (ECM) to let you know that there are transmission faults present in the Transmission Control Module (TCM). To find out what the problem actually is, you must have a scanner that is capable of accessing the TCM and retriving the codes. NOTE: a "generic OBD" code reader cannot do this.

P0351 is "Ignition Coil #1 Primary Circuit"
P0352 is "Ignition Coil #2 Primary Circuit"

The ignition coil primary circuit is monitored when battery voltage is more than 8 volts during cranking or more than 13 volts with the engine running at less than 3000 RPM, and no coil in dwell during testing. The Diagnostic Test Code (DTC) will set in the Powertrain Control Module (PCM) memory when the PCM senses peak current is not achieved with battery based dwell plus 1.5 milliseconds of diagnostic offset. DTC P0351 and/or DTC Po352 takes less that 3 seconds to set during engine cranking, or up to 6 seconds with the engine running. Possible causes for these DTCs are : Intermittent condition, defective ignition coil (or coils), defective connectors or wiring,defective PCM .

NOTE: Intermiitent failures or problems in the contacts/circuits of the Auto Shutdown (ASD) relay can also cause these codes. Some aftermarket equipment , like remote starters and antitheft systems that are connected to the ASD relay circuits can also cause these codes. Any such equipment should be COMPLETELY removed from the vehicle before attempting to diagnose these codes.

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I have a dodge ram 1500 an it will not go over 20 mph an i have no clue whats wrong with it?

you might have a stopped up catalytic converter. Is the check engine light on? and when you reach 20 is the engine missing or running rough?
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I have a 1996 dodge ram 1500 automatic 5.9L V8. I was driving the other day and I can't go over 25 mph. Also when I had the truck in park I tapped on the gas and it sounded like there was something banging...

Your catalytic converter is clogged up inside and has melted down.The rattle noise you here is a chunk of the inside of the catalytic converter that has melted and broken off.You will need to replace the catalytic converter.
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I would suspect a clogged catalytic converter.
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Check it out at an exhaust shop.
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I have a 2001 Dodge Ram 2500 4x4 extended cab 5.9 V8 magnum that starts and runs smooth, but when you go out on the highway and get up to 40 or 45 it starts to bogg down or if you start going up hill it...

I believe I would begin with a fuel pressure and flow test. With the key on and engine off you should have 44-55 psi of pressure. Flow should be .5pt in 7 seconds (fuel line disconnected and running freely into container). If pressure or flow rate is low, verify fuel filter condition. If filter is ok, you likely have a weak fuel pump. How is the ignition system, more than once I have encountered a bad distributor cap, rotor, or coil that displays the same symptoms. Another issue I would look into is restricted exhaust (I.E. - bad catalytic converter) Loosening the exhaust at the manifold and creating a leak at this junction should allow flow to increase long enough to drive and see if is better or not. Give these a try and see what comes up.

Doug
Master Certifitied Auto Tech (25yrs)
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Will my 98 dodge ram run with out the catilyic coverter? it is not running right, and i was told it would. need help

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With any vehicles built past 1996, with OBD II, I would not recommend the removal of your catalytic converter.

I hope this helps! :)
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