0
What is the problem you relaced EGR valve solenoid and EVP sensor but still get code 31 Mercury Grand Marquis 1991?
Wiki User
∙ 18y ago
You still have an EGR vacuum regulator, a vacuum harness, an entire wiring harness, and a computer involved in that sub-system. There could be a fauly EGR vacuum regulator(EVR), there could be problems with the vacuum lines to or from the EVR so that when the EVR opens no vacuum is getting to the EGR, there could be wiring problems between the EVP and the PCM, so that the PCM is not getting a proper signal from the EVP, there could be problems with the wiring to the EVR, so that the PCM command to open the EVR is not getting to the EVR, there could be problems with the PCM so that the PCM is gettting the signal from the EVP, but is not processing that info properly, there could be problems with the PCM so that the control output to the EVR is not working. A scan tool never tells you what is wrong with a car, because the PCM has no way of knowing exactly what is wrong. It only knows what sub-system it is not getting an expected reading from, so it can only tell you what sub-system is involved, as in the case of a code 31. Code 31 does not automatically mean that you have a bad EGR/EVP. It means that the PCM does not see an expected voltage value from the EVP when it thinks it should. That could be anything in that sub-system, which includes all the above stuff. I reccommend you should obtain a volometer, and a wiring diagram, and possibly a diagnostic flow chart.
Wiki User
∙ 18y ago
Add your answer:
Earn +20 pts
How are hockey goalie gloves relaced?
You need to take it in to a store to be relaced, and they just put the laces threough the holesand tie it it underneath the leather at both ends.
Are llames and alpacas relaced?
First we must specify if llamas and alpacas were laced in the first place. What exactly does laced mean? Lace means "a netlike fabric that is threaded" according to dictionary.com. So the suffix "-ed" means "forming the past tense of" so "laced", therefore, would mean past tense of a netlike fabric, possibly meaning that the lace was there before, but not now. This would make sense, since in order for something to be "relaced" it would have had the previous lace to be removed. So are llamas and alpacas laced? It appears that maybe their shaggy fur would be considered as lace, as it is somewhat netlike and is definitely threaded. Therefore, we can safely say that llamas and alpacas are "laced". But are they "relaced"? If a llama or alpaca was laced, and then shaved for it's warm and soft fur, but then the fur grew back, that camelid would have been "relaced". So, technically, llamas and alpacas can be relaced.
Have a 1985 supra that the headlites won't burn on Except when you contact the headlite relay manually Does anyone have a solution to the problem Or a source that can help with a solution?
i had same problem there is a box labeled headlamp retractor and it is in the drivers side quarter right behind drivers door along with a bunch of other modules they are in a bad spot and take in water but i found a used one and relaced it and now my headlamps work fine
Before you attempt to replace spark plugs on 2003 Chevy cavalier ls with the ecotec is there any rubber insulators or anything that will need to be relaced also?
no
How do you say beautiful man in French?
Un bel homme (the usual masculine is "beau", but for liaison purposes, it is relaced by "bel" when it is just before a vowel sound)
1997 Ford Ranger XLT 2.3 ltr engine heater takes long time to warm just replaced thermostat temp gage reads cold?
I had the same problem. relaced the tep control sensor and sending unit and it worked. One is located next to the thermostat housing and the other is further over on the intake.
Need size for mower deck belt for craftsman 917.257112?
I just relaced the same belt on the same model number tractor yesterday and it was an 88"x1/2".
Does someone know if my ignotion switch needs to be relaced because when I turn it to start the truck it kinda makes a clickin noise in the column and wont even let me turn it over?
I think that your problem will be in the starter. I think that the solenoid is not kicking the bendix into the starter gear. Check the wiring, check for a good ground. If that is not it pull the starter and remove the solenoid and replace it. Your local auto parts store can test your starter to see if it is working. Jeff if you think its the starter, remove starter and bench test it. if you can't do this at home you take it to your nearest autozone or checkers and they can check it for you. if the starter is good. reinstall starter and try a remote ignition switch. you can find them for less than 10 bucks with 5 feet of lead wire and alligator clips. hook it up to stater. turn key on and start with remote and it should run. turn off key and try key start again. if it doesn't start that way you know you an ignition switch problem. this method should until you get a new switch. I had same prob I tapped the side of starter litely with hamer and tried again to start and it started up it, ended up being the starter and I replaced starter, problem solved
What would cause an 86 Celebrity to cut off while driving?
May be a fuel related problem. Have you changed your fuel filter. if so what about noise from the fuel pump. does it hum loud? I had the same problem some time ago. It drove me, and my trusted mechanic friend, NUTS! We relaced the fuel filter, fuel pump, coil, computer, various map sensors, etc. I am presuming you have a carbuerated car. There is a throttle mixture sensor mounted on the top of the carb. (It has a wiring connector mounted to it. If I remember correctly the connector is blue in color.) A replacement throttle mixture sensor costs @ $175!, but it will solve your problem.
Why did the Victorians use horses to pull wooden vehicles in the old times for transport?
The horse was used for many, many centuries before the advent of steam power which in turn was relaced by the internal combustion engine.
The window washer on my 1997 Tacoma wasn't working so i replaced it It still doesn't work Any suggestions?
Relaced the washer motor and it still does not work? Check the fuse, if it is good then you have a bad connection somewhere.
How many miles can a 2002 Toyota Avalon engine go?
My 1995 Avalon has 302,000 miles on it. Original water pump, plugs relaced only once. Original muffler. No problems, starts up every time.
