My 85 ltd is doing the same thing, I checked the cylinder pressure and found it to be 40 lbs.The sprk plug was black from fuel and oil deposits, and still wet looking.I'm going to pull the valve cover and watch the roker action,maybe the intake isn't closing completely. I think that the answer is simply "lots of mileage" and probably needs a valve job. But don't rule out PVC valve,egr valve,vacuum leak or fuel pump. Ill let you know what the answer to mine is if you let me know what yours is. respectfully, TOM KLINE (GOOD LUCK)
I have a 1985 midsize LTD 5.0L HO Police/Taxi with Center Fuel Injection that has had this symptom from 1985 to 2007. An additional symptom was that it would ping a lot. A mechanic found that someone, possibly at the factory, had drilled a small hole in a plastic fitting for the EGR valve. After replacing the fitting and a vacuum operated valve it ran very good. While the engine doesn't die or ping now, sometimes the idle drops down and the engine gets a little shakey. My experienced guess is that it is an inherent intermittent, possibly temperature related, problem with this year model design for cars with the Center Fuel Injection. The problem can be effectively fixed by fixing all vacuum leaks and assuring all vacuum operated actuators are working; this greatly minimizes the frequency and amount of the intermittent slow idle and it eliminates the ping. The ping is probably caused by the vacuum system giving inaccurate input to the electronics that then advances the spark too much. Lee Jordan
Your Answer
Related Questions
My 98 camaro is shaking you replaced the plusand wires but the problem contines and the check engine light is on what could be the problem?
bat motor mounts cause the shaking a knock sensor realizing its shaking is the light get new mounts
What is wrong when a car is shaking from the engine?
it could be your engine mounts are needing replaced
What would cause a dog to keep shaking his head?
Earmites or grass seeds in the ears could cause this
Can low iron cause shaking?
Low iron does not cause shaking. It tends to cause dizziness, headaches, and shortness of breath. Shaking could be due to low blood sugar or other health problems that should be discussed with a doctor.
What would cause a 350 gmc engine to develop blowback?
Could be, A very high mileage/worn out engine, The PCV system not in working order,
Can an EGR valve cause shaking or hesitation?
EGR should turn on Service Engine light on 96 and later. The tube / pipe to the exhaust manifold can also become blocked. EGR could cause rough engine. Many other possibilities.
What is the problem if a 95 Honda Accord is constantly shaking and the check engine light comes on?
The problem could be many things. With the check engine light coming on, it could be an internal issue in the engine, or broken engine mounts causing the vibrations. The shaking could also be caused by a separate issue from the engine, including a loose tire, or an out of balance tire, or bad suspension.
2003 rio check engine light on and shaking in rear?
Could it be ball joints?
What is the disease that causes the body to start shaking?
There are several different diseases which can cause the body to start shaking. If the shaking is particularly violent, this could be epilepsy. A less violent shaking could be Parkinson's disease. But there are several other possibilities. Factors such as cold, nervousness, or fatigue can also result in shaking of various kinds.
Does arthritis cause shaking hands?
No but could be associated with diseases that cause tremorsAdditional answer:Some of the medications that treat rheumatoid arthritis or other types of auto-immune disorders, may cause shaking hands or even cause neurological problems. If someone has arthritis and their hands are shaking, they should talk to their doctor.
Can service light cause uneven idling?
No, but something that could cause uneven idle could cause the check engine light to turn on.No, but something that could cause uneven idle could cause the check engine light to turn on.
Why when you turn on the ac the engine start like shaking?
If the problem disappears when the shifter in placed in neutral it could be a transmission or engine mounts
What could cause shaking of wheel while driving?
Tire out of balance is the most likely cause. Can also be a bent wheel.
A cat is shaking his leg what could be wrong with him?
His leg could be asleep from him laying on it, or it could be itchy and he is shaking it
Why is your 1998 Honda Passport shaking?
It is scared of something, is there an Escalade around? Seriously, shaking while driving could be wheel balancing or front end alignment. Shaking while at idle or what seems to be coming from the engine might be a motor mount.
Are there sensors that would cause a 1997 dodge stratus to not start?
Yes, just about any sensor on the engine could cause a no start.Yes, just about any sensor on the engine could cause a no start.
What would cause shaking in 1997 CRV at speeds over 40 mph?
Could be several causes. Out of balance tire, or tires - Broken engine mount - Broken transmission mount, would be my first guesses.
Why car shaking Toyota Corolla?
The Corolla could be shaking for many reasons. Start by checking the wheel bearings and brakes for wear. Then check the engine to see if it running rough, causing the shake.
What cause an engine to idle high?
A vacuum leak could cause that.
What cause shaking in a truck?
It could be a bad CV joint for one.me and my sex god boyfriend for two ;D
If my pet rabbit is shaking what does that mean?
Shaking how. He could be hot or scared or if he is shaking and kind of moving in circles and his neck is bent up wards it could be a disorder called rye neck. Wry neck symptoms are more of a staggering or rolling motion than a shakng. A chill or fright is most likely the cause. Shaking of the head could indicate ear mites. Cat ear mite medication can be used.
Will a bad head gasket repair cause loss of power on a 2002 Subaru?
If an engine was not assembled properly it could cause a low power complaint.If an engine was not assembled properly it could cause a low power complaint.
What is another word for shaking?
Another word for shaking could be shiver.
What could cause groups living in different regions to develop differently?
Well, the different landforms could cause the groups to live differently
Will a vacuum leak cause the check engine light to come on?
It could.It could.
