G,day own a chev van 1988 g20 5ltr, engin light comes on van running like a pig .Took to a auto shop code 11,12,come up not sure what thay mean any help would appreciated
Re: G,day own a chev van 1988 g20 5ltr, engin light comes...
I have a Chevy book covering that year. Code12 is the code that flashes to let you know the ECM is working properly and there is no problem. As to the 11 code there is none in the book for that number.
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hello.. i would like to help you with your problem,BUT..GM.has or had a recall for the Throttle position sensor,which causes indicator lamps to come on/or reduced power indicator light, im verry sorry to say but i think GM. is a little baffeld on this one as well,if you look up on the GM. auto forums thay are full of the same complaints ,sorry again (BUT)not one solution to your problem or for many other owners.im sure by your question you have changed this sensor. GOOD LUCK.WITH YOUR TROUBLE..
So you replaced the sensor and now the light is back on, right? Have you checked the code again to make sure it's still the MAF sensor code? If so, you've got a connector or wiring harness issue.
Cycle key to on (not start) then off, then on, then off, then back on & leave in on position. Now watch check engine light and it will begin to flash. When it does, it will flash a certain number of times, then pause, then flash some more. Count those flashes and write them down. All numbers will be 2 digits. For example: flash,flash,flash, pause, flash ,flash,flash. will be code 33. Then small pause starts next set of numbers. When you get 5 flashes, pause, 5 more flashes, =55, that means end of message/codes. Do that a couple of times until your sure of the number(s) and get back to me/us and we will be able to help better from the codes.Saves time and money.
11=no distributer reference signal detected during the cranking cycle. check the circuit between the distributer and the PCM. 12=problem with the battery connection. 55= end of trouble codes. hope this helps Please rate my fix as i strive to be the best. If you need more help get back to me Thanks Ray
Hi, the 4.3 liters have an injection system on them that can leak and will show up as a misfire. it is common but elusive to find. you might consider taking the van to a repair shop to have the problem diagnosed and go on from there.
Take the vehicle to Auto zone to clear the computer. It may just quit doing that after the codes are clear. if the flashing continues the computer is at fault
The lite came on because the computer saw that there was no power to the cooling fan curcuit. That is monitored by the computer. But to be sure you should have someone read the code for you. Or you can disconnect the battery and it will clear the code. If the lite comes back on the computer is still seeing a problem and you should have it check.
EPC stands for Electronic Power Control - part of the dreaded auto computers.
My 1st suggestion would be to use a ODB II - analyser and read any codes in there. If you don't have one handy or with a friend, go down to a local friendly auto shop ie Checker and ask to borrow one of there's for a few moments.
Write down any codes and look up on the net. Reset any codes on the computer while you are there.
A stop gap method is to disconnect the battery on the car for 10 minutes and hook up again. This forces the computer system to reboot - that may cure the problem also.
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