Jump to content

4.3ltr Seriously Bogging

Bogs

By Bogs
in Ask A GM Technician

Recommended Posts

Bogs New Member

Bogs

Posted
Posted

2003 GMC Jimmy 4x4 vehicle eng vin code X, 2 door

 

Wow..where to begin guys, this things been a nightmare, I'm actually a mechanic for a golf course ( after years in small auto garages ) myself and I can't figure this one out...

 

Well boys, it all started when the 4L60E tranny went... working as a mechanic you know you really dont feel like comming home and starting to work on your own car after a days work so I bought a used tranny from a scrap yard with real low miles and sent it off to a tranny shop to have it done...mistake number one as he didnt change the torque convertor, nor did he replace the front & rear seal or change the filter, all which I had supplied to him with the tranny, in addition he snapped an exhaust stud and actually broke the y pipe which he denied and I had to weld at my work. In addition it drove with the torque locked up all the time...Loooooooong story short I bought ANOTHER tranny and put it in myself ( also found he didnt tighten three bell housing bolts, broke the neutral switch because he didnt have a heat gun to unglue the connector, and ruined the seal on the output shaft causing it to leak and lock up the convertor...anyways, I rant, I'm just a little ticked at the place :) ).... so now the new tranny is in but the engine is bogging, seems to start & idle fine, but ANYTHING passed idle and I have a bog,it wont drive because if you give it gas it will bog and ultimately die, sudden acceleration will result in a stall...now codes with my Innova OBD II scan tool are for the mass airflow sensor and a rear left bank oxygen sensor... I replaced the mass airflow sensor and have 3 new oxygen sensor AND a new front Y pipe with convertor on the way... This truck wont get the best of me , might make me broke, but it WILL freaking run when I finish !! anyway error codes, which dont always trigger are P0101 & P0102, I only got the P0102 with the old mass airflow sensor and with the new one I am getting both P0101 & P0102, but not always, I can start it fine and if I give it gas you can here it start to bog and it doesnt trigger a code, as the new mass airflow sensor is giving me a code like the old one did, I've cancelled that out as a source for the bogging, along with the rear oxygen sensor as that being faulty shouldnt cause a bog, I've checked the continuity of the three wires from the mass airflow sensor to the control module and they checkout. I've also changed my distibutor cap and rotor.

 

 

I suspect either a vacuum leak at the intake itself ( checked all hoses already , there is one on drivers side that is not connected to anything and has vacuum when engine running, I plugged it, plugged or unplugged makes no difference whatsoever, engine bogs the same) or perhaps a fuel pressure problem...I'm just wondering if any of those would cause the intermitent P0102 error and the oxygen sensor error I see once in awhile... oh yes the front y pipe when i had it off I can hear the convertor rattling around and I know a clogged convertor can cause a bog, but it made noise before the tranny and ran perfect like that....

 

I guess I'm looking for the common problems that go on this truck to have an idea where to look, I suspect that driving it home from that tranny shop with it locked in OD put alot of strain on either the fuel system to supply it under that load or the intake and blew the gasket but I dont see any kind of leak nor hear a hissing and when I yank the PCV with the engine idling its sucking really good and If I give it some gas it moves, so the pcv isnt jammed.

 

I suppose my next task is to test the fuel pressure and check for bad pump or regulator ??

 

Then if that checks out yank the intake and look for a leaking /blown gasket ??

 

 

 

One other problem I've had with the truck since I bought it is when i fill up the pump clicks off 300 times, something to do with the vent valve but that never made it bog or given me engine problems before ...I'm wondering if whatever the problem is there could have worsened and is now causing the bog ??

 

I guess I know where to go, just looking for some confirmation and conjecture based from people with experince working on these trucks

 

 

I just find it funny that I didnt have any problems like this before it went to that tranny shop but the tranny seems to be working fine, cant test drive it to see but on idle in drive and reverse it creeps and goes into all gears, and the 4X4 woks too.

 

thanks for your time and replies :)

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • newdude
      Seems to be Missing a lot of Updates

      By newdude · Posted

      Based on what I can tell, yes.   As for updating it, its a mixed bag.  Updates do fix a lot of issues, but occasionally can create some oddities.  They do more good than harm though overall.     Here's what the most current one does and a  V171 Improvements Important: Improvements will vary by model, build configuration, system, and sales region. Not all vehicles have all features. OnStar and Wi-Fi may not work after remote start CarPlay may not automatically reconnect Part of the Driver Attention messaging screen may be in English even though the language is set to something else XM may not work After a dead 12V the radio may set to Arabic at each startup Bluetooth contacts might not be able to sync with the vehicle During an OTA the 12V battery may drain Customer might see a screen telling them to return to the dealer After changing the Wi-Fi SSID or password a device may not disconnect If a device is connected on the 2.4Ghz band, nothing will connect to the 5Ghz one, which could show as slow Wi-Fi speeds Customers might have noticed Wi-Fi dropping in certain areas and reconnecting later Customer might see the top of the screen blinking during Android Auto Android Auto may not connect CarPlay audio might momentarily cut out The "Add Phone" button may be grayed out The radio may not start up   V167 Most Notable Improvements:   Outside Air Temperature is incorrect. -You may see a popup message for Engine Shift. (Corvette Only) After changing the exhaust sound they get a popup that "mode change not applied", even though it was. -When changing volume, the volume bar is for Traffic instead of Audio. -(Corvette Only) Improvements to the placement of buttons and text. -If the customer receives the message "Apple CarPlay Could not connect", the cursor might move in the opposite direction than expected when using the control knob. -Android Auto automatically starts playing their music, even though they have turned that off in settings. -Intermittently they have a red OnStar LED with no OnStar function and/or no audio. -The minimum length of the Wi-Fi password was increased to 12 characters. -The popup message "Driver Attention Check, check your mirrors or Super Cruise will shut down" may not have come up on the display when it should have. -Startup animation added for 20th anniversary of the V-Series on Cadillacs. -The Navigation app received location improvements when going under long underpasses. -In the Navigation app there are filters for charging points that the vehicle cannot use.   V164 Most Notable Improvements Most notable improvements contained in this release may include: Apps Intermittently, an “SD Card Removed” message will pop up in the Navigation app. While in the audio app, the radio may stop working. Trailer Tire Pressure sensors may not be learned in the Trailer app. Not being able to return to the home screen while in the Camera app. After an ignition cycle, the radio might go to a black screen or stop working if using Sirius XM. Spotify icon truncated on Audio app.   SXM When changing power modes with the ignition switch, the HVAC pop up might appear. During startup, the radio will show the brand splash screen then go blank. Receiving a confirmation pop-up when changing drive modes. A “Return to Dealer” message may appear on the radio screen. SuperCruise setting toggle may not work. System After an ignition cycle, the radio might go black or stop working if using Sirius XM (SXM). Settings When performing a factory reset, the radio may stop working. After performing a factory reset, the radio may stop working when trying to switch users. When trying to go into the Language section quickly after startup, the radio may stop working. Projection Wireless CarPlay cannot be connected after unpairing another wireless Android Auto device. When the Android Auto screen comes up to connect wirelessly, the screen may freeze if the Cancel button is pressed. Removed the Apple CarPlay Cannot Connect screen when a device fails to pair during the autoconnect process. CarPlay information may not show up in the audio app. Near Field Communications (NFC) chime may be heard when NFC does not work. The Cannot Connect screen does not pop up after the first connection on wireless CarPlay fails. Apple CarPlay is now functional in Guam. Over the Air (OTA) When a software update is cancelled, the downloading logo may still be displayed. Energy When using the Energy app, the radio may stop working. When plugging in the vehicle, the display might show “Now” instead of “Charging Upon Plug In.” Instrument Cluster Voice recognition can be started while on an OnStar or phone call. When downloading contacts, there is a progress bar and circles on the Recents page of the cluster. The temperature on the cluster and the display may be different. After receiving and ending a call on the secondary paired phone, the cluster may get stuck on the phone menu. Bluetooth Intermittent Bluetooth connection loss.
    • AndrewF
      Front End Rattle

      By AndrewF · Posted

      Looking for help troubleshooting a metallic like front end rattle. Figured I’d see if anyone had thoughts before I schedule an appointment with the dealer.   The rattle is fairly loud and occurs primarily when the front driver side wheel hits a bump, even fairly minor road seams. Sometimes does it when the passenger hits a bump but I don’t believe when the rear hits. Rattle still occurs when foot is pressing brake peddle so I think that rules out the caliper rattle I’ve read about. I’ve also checked the running boards and they are tight.   Most noticeable at slow speeds.    Any insight is appreciated. 
    • KARNUT
      What did you do to your "other" car (aka musclecar) today

      By KARNUT · Posted

      We try to make cruise the coast. It’s where our favorite casino is. I only want to spectate. Never took a car. Always had one to take. I belonged to a club once. Even when I used to drag raced. It was during test and tune. Probably because I’m not a night owl, party person. 
    • RyanbabZ71
      What did you do to your "other" car (aka musclecar) today

      By RyanbabZ71 · Posted

      We had a pretty big cars and coffee in Indy this past weekend.  Pretty much anything and everything was there.  
    • Atlas
      What did you do to your "other" car (aka musclecar) today

      By Atlas · Posted

      Good looking Olds, and TRX!   I haven't been into car shows either. I'm probably not a convert but I did push myself this year to attend a few select events to challenge some assumptions and try to experience car-based social clubs in a different way. I joined up with the local Hagerty group for some cars/coffee events, group drives. A month ago I showed my '94 Camaro I rescued last fall at Radwood. Had a good time, but, there was some sitting around with the car and that's the part of shows I don't enjoy as much. I prefer to be a spectator, walk the show, grab a burger, go home.   Radwood was the only era-limited event, but where it had strict model year limitations, it made it up in variety. Having Jason Camissa there was also a hoot.   Where I see old 50's car shows, doo-wop and winga dinga music stuff fading out, same with "only" vintage muscle clubs, it seems to be the activity-based clubs/events which are gaining strong popularity. Places where all cars and interests come together.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...