1988 GMC 6ci truck vibrates at idle or when i stop at stop signs
The hole truck vibrates real bad when am idling or stop waiting for triffic to go. when i first start the truck it doen't do it but when it warms up it does i just changed spark plugs/ wires/ distributor/ air filter / oil change/ fuel filter/ it getting so bad
- 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.
Change the temperature control sensor to the front if the engine near radiator 1 start the truck let it run till you think it is at normal operating temperature 2 unplug the temp sensor if the idle changes then the sensor is bad
If it Idles well in park and neutral but shutters when you put it into gear then I would say the trans. torque converter is staying locked.You may want to try and flush the trans,replace filter and fluid.
well it will casue it to stall if the egr is stuck open and you stop at a light or stop sign,due to it beinge stuck open the open egr valve acts like a vacum leak,,,,ive also seen bad fuel pumps and fule filter to cause a stall while hot and cornering
You left out a lot of needed information but I will try to help out.
You can pull the spark plug wires off one by one while the engine is running to see if you have one or more cylinders are not firing. Depending on how long it has been I would do a tune-up first, replace spark plugs and wires, filters, fluids etc.
With that done and if all cylinders are firing pull the transmission dip stick and look at the fluid, I am assuming you have an automatic tranny. The fluid should be a light red, if it is brownish and has a burnt smell then you could have a problem with the clutches inside your transmission which can cause this same problem.
My 1988 GMC jimmy with V-8 and automatic transmission w/ over drive would buck and **** at low speeds. The problem was identified by a FixYa guy as a transmission problem and suggested I try adding a Lucas product transmission additive at about $4. I did that and I am amazed that the old truck runs smooth, even idles better and does not stall when I go to reverse.