My 97 bonneville's lock up converter make the vehicle chug..it seems to be trying to lockup but disengages causing a chugging action of the vehicle....i took this vehicle to a gm dealer in east tn as i was told this vehicel came here from up north and it has to have a chuggle program installed....they supposedly installed it but the vehicle still chuggs...is there anything that can be done to solve this issue???
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Re: pontiac lockup converter
A GM dealer should be able to reflash the PCM to help alleviate the chugging.To a certain extent,it is normal,and you might want to consider tuneup things like plugs and wires,air and fuel filter,and also have all the engine and transmssion mounts checked for weakness,as weak mounts will magnify these types of problems.
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call or notify a bone/junk yard they have the cross reference charts for vehicle parts or try a gm dealer these are a few that are compatible 97-99 Pontiac Bonneville SE 6Cyl 3.8L 231CID VIN K Fit Note Engine VIN: K, Naturally Aspirated 97-99 Pontiac Bonneville SSE 6Cyl 3.8L 231CID VIN K Fit Note Engine VIN: K, Naturally Aspirated 98-99 Buick LeSabre ALL ALL 97 Buick LeSabre ALL ALL Fit Note With Harness Codes: HEN, HER 97-99 Oldsmobile 88 ALL ALL 97-99 Oldsmobile LSS ALL ALL Fit Note Engine VIN: K, Naturally Aspirated 97-98 Oldsmobile Regency ALL ALL
Fuel or spark issues can cause this . Transmission lockup clutch can make a chugging sensation . When in overdrive lightly touch the brake while keeping a steady throttle and see if the chugging stops . Post back .
Determine whether the jerking is engine or transmission related. One way to determine if it is the transmission lock up converter is acting erratically is to down shift out of OD. And see if jerking persist. If it goes away suspect transmission to have problems with torque converter or TCC solenoid . If it doesn't go away determine whether or not the engine sounds to be misfiring. If so vehicle may require a tune up. Many vehicles can be diagnosed for free at your local Auto Zone.
I do not know much about this vehicle but if it is diesel it sounds like you should clean and or replace air filter and or glow plugs or grid heater... if it is a gas vehicle changing the fuel filter and checking spark plug gaps and plugs and wires also the cap and rotor may have where witch will cause intermittent and weak spark so you could be getting to much fuel and running rich. also if it has a catalytic converter you may want to check if it is partially clogged and if it is have it replaced hope this helps good luck
if you converter is blocked up or clogged take it to s hop and have them cut it off and put in a new one...... with a clogged doncverter it will act like it is the transmision when it is not.... i just went through this with my suburban