Having problems with your 1994 Chevrolet Beretta ?

Car idles fine but after driven a while and put into park it idles very high and after it is shut off and restarted in fine. problem is also intermittent.

Posted / edited by AnonymousUser on : 26-02-2018

Answers :

I own an 89 2.8 v-6 Beretta GTU, with a performance chip i installed when i first got the car, 40 hp extra. So i'm familiar with my computer and its location its very easy to access and change, just remove glove box and passenger kick plate. One day when it got to 233,000 my car started lurching and bucking real bad like the transmission was going bad, but it went away after i pulled over and turned off the car and restarted it. so i new it had to be electrical, so i changed out my computer and reinstalled my chip, then i"ve noticed ever since the "newer" computer, especially when "coming to a stop", my car would have a, what i like to call, a "Toyota moment", and the engine idle would speed up and i would have to slam on the brakes real quick. Everytime i changed the battery, i new i would have to watch out for this problem, because what i've learned over the years is that now the computer has been reset and now has to re-learn all the sensor inputs. Maybe these Toyotas just have a simple wire harness that is shorting out or some EMF interference like Cell phones/Cell towers, GPS systems reseting the computers thats my guess. I heard someone say they think its due to Solar flares..they have Nasa working on this problem do you believe that. They just need to install a computer kill switch in the cars.
The literature for the chip said it may take a couple of days to relearn the settings, they were right, it didnt run as advertised for the first couple days after a battery change..but it soon returned to its normal chip settings..this problem would only happen when coming to a stop or as you mentioned.. "putting in park". Also i"ve been noticing because i just had to replace a worn battery cable, that when i first start the car it goes into an "extremely" high idle, but pressing on the gas pedal seems to reset it to normal. By the way my car now has 297,000 and still going strong. But getting back to your question, you either have an intake leak, a vacuum line cracked, (which i found on my MAP sensor about a year ago, it was causing some strange idling problems too..i just cut off the cracked portion of the hose and shoved it back on), or you have a defective computer (ECM). When i installed the new one, i discovered that one off the connectors was really dirty and a little corroded so i cleaned it up and reinstalled the new one. You may want to try just that, dont take the cover plate off the computer you might have static build up and fry a component, just make sure key is off and disconnect battery to insure it wont get damaged when reinstalling connectors. Please feel free to ask any other questions about the Beretta. Please can i get a very helpful, responce and if you have anymore questions please feel free.
Repair Help & Product Troubleshooting for 1994 Chevrolet Beretta

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