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1994 Chevrolet G20 Questions & Answers
1994 chevy van G20 4.3L runs a little rough and
Firstly if the engine isn't running at it's peak it won't be producing as much heat as usual and secondly an engine rarely runs cooler than usual in average ambient temperatures so it is probable the temperature gauge isn't indicating accurately - this could be a faulty gauge, a faulty instrument voltage regulator, bad connection(s) or bad wiring or a tired sensor. It could possibly mean the sensor bulb isn't in complete intimate contact with the coolant due to a buildup of scale or even combustion gas bubbles from a failing head gasket.
I have a 94 chevy van g20. it has the 5.7L TBI. im
You have a wiring problem on the control side wire . One wire will have B+ voltage the other goes to the PCM- engine computer . The engine computer suppy's a ground when triggered by cam sensor . Your problem is you have a bare wire touching ground making the injector fire all the time the key is on ! Check the wiring harness from the injector to the PCM for rubbed through spots !
The PCM must be inside the passenger compartment under the right side dash or behind the right kick panel . Here is a web site for free wiring diagrams .
http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size . Under system click on engine ,then under subsystem click on fuel controls . Click on the search button , then the second blue link. Second diagram down is fuel injector electrical circuit. Dark green wire is the controlled ground . That is the wire to check .
I have a 1994 chevy Van G20 series it will go in reverse and in low gears but wont shift
Check your E-break first, secondly check to make sure you have no errors kicking from the control unit (engine computer module) which may or may not trigger a check engine light. Moreover it could be several things. Since it's an automatic the drive train maybe damaged, controller unite could be damaged, the transmission could (and probably) is dying. I'd have a professional mechanic check it out.
I have a 94 chevy g20 van w a 350 when I turn the
Assuming you have a good battery there is a small wire that goes to the battery terminal on the starter (big red wire) That is where you get power to ignition switch. this is a fusable link wire If you pull on it slightly and it streches it is burned into.Resist the urge to replace it with a non fuseable wire, it is at any parts store
Does a slipping transmission always = rebuild?
check your trans fluid level before any thing else, low fluid will cause it to slip, if it is low and you keep driving it that way then you will burn up the clutches and need a rebuild
Where is the ECM on a 1994 chevy van g20
My info says under the driver seat also. But the P series is on left side behind shipping panal. Not sure what that means. I looked under all the options and these were the only two areas stated. On most chevy's we find them up high behind the glove box.
What does tec service bulletin GM 02-01-39-004B
it will be a special oil that is only sold by accredited ac specialist shops . If there has been no failure of the system other than a leak then there will be no need to put oil in the system. This is not a job for DIY's as as the quantity of oil has a maximum amount and too muck makes the system inoperative
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