An expert who has achieved level 2 by getting 100 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert that has over 500 points.
Re: 1991 eldorado lack of power,
Check your rotor under your distributor cap if you have one. That should be replace. Also did you check your mass air flow sensor. you can buy a special spray to clean it out. Do you have a throttle body, if so it is so easy to pull and clean it out. Check your throtle body sensor.
there are a lot of auto part stores and garages that will do free computer checks now. Take advantage of this.
your definately on the right path, just keep digging. Also does your car have a turbo, this could be your problem.
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need. Goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
What engine size? The 2.8 had a problem with the torque converter clutch solenoid sticking and causing a stall but no trouble with it once vehicle in motion. You may have a plugged catalytic converter in the exhaust system causing lack of power/speed during acceleration. An exhaust back pressure test will determine if this is your problem. You can remove the oxygen sensor and drive the car ( it will be loud ) to see if the vehicle runs any better. If it does, the exhaust could be plugged
A code P0305 may mean that one or more of the following has happened: 1 Faulty spark plug or wire 2 Faulty coil (pack)3 Faulty oxygen sensor(s) 4 Faulty fuel injector 5 Burned exhaust valve 6 Faulty catalytic converter.
Possible Solutions If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back. If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
code p0733 refers to gear 3 -incorrect ration===causes---wiring---TR sensor/switch--shift solenoids---transmission mechanical fault
code p0420 refers to catalytic converter system -bank 1---efficiency below threshold===causes--cat converter--wiring--HO2s 2
code po430 refers to cat converter system bank 2--efficiency below threshold===causes--cat converter--wiring ---HO2s 2
code p0328 refers to knock sensor (KS) 1 bank 1--high input===causes--wiring short to positive--KS incorrectly tightened--KS---ECM
basically replace the cat converters as they are blocking the exhaust system and preventing your over 45mph problem
replace the TR sensor/ switch as you have not mentioned a transmission problem
Rectify the problem with the KS as it controls the air/fuel mixture setting which contributes to the car getting hot.
P0304 Cylinder 4 Misfire Detected,A code P0304 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs).. I would suggest spark plugs, sparkplugwires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced.
200K is a lot of miles. I would think that the rings might not be in
very good shape.
Take the oil filler cap off. Stand to the side of the vehicle. Put the
car in gear push hard on the brakes, and push on the accelerator to ask a
lot of power from the engine. If you get exhaust gas coming out of the oil filling hole, your piston rings are history.
See if that “stuck” code is back, and find out what the code is saying.
I had a 96 Hyundai that got to the point that no acceleration was possible. As it turned out, there were two catalytic converters, one in a coffee can shaped section of the exhaust manifold, and one a lot farther down the tail pipe. It turns out that the face of the first converter had actually melted from the exhaust heat, and the face had seeped over the whole front of that converter, blocking any chance for exhaust to flow through it. My first clue was when I disconnected the exhaust pipe from the manifold, then started the car. There was no loud exhaust noise! (I thought I had lost my mind!) I don't actually think you have this problem, because resetting a code cannot overcome that kind of problem.
Having the exhaust gas analyzed while the engine is under a load might reveal something meaningful.