C4 won't start

by chip

'93 car was idle for two years. Supposedly had new opti.I changed the fuel pump the car started right away a little rough but ran.I did this for several days now car won't start but turns over. During this the engine wants to turn in reverse after about 20 secondds of cranking and some backfire through the intake. Also, when the engine ran there seemed to be a miss on the passengers bank. When the car was put in drive engine was extremely rough acted like running on 4 cyls.

Additionally, the only codes I get are c12 although once has h311,h33,h35,h37. I imagine with the battery out all the previous codes have been erased.

Can anyone help to determine the starting problem? thx chip

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to C4 Corvette Ask!.

Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.
Chris Trautman @ Corvette Assembly Plant 2019

About Us: Corvette Web Central | Owner Bio: Chris Trautman

Established in 2008 by Chris Trautman, Corvette Web Central quickly grew into one of the top leading Corvette enthusiast websites globally. 

"This website is a passion of mine, just as much as being a Corvette owner," says Chris.  He was frustrated trying to find information on the internet about Corvettes which was was not biased or influenced somehow. 

He has owned three Corvettes over the last twenty years and does not plan to stop owning one anytime soon.

Note: Some links on this page are part of our affiliate program and provide a small portion of proceeds to fund the administrative costs and to fund more product reviews.  We are not paid to perform the reviews or are we given any products for free.  

You might like these