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-   -   89 RS/ New to TBI tech (https://www.thirdgen.org/forums/tbi/731554-89-rs-new-tbi.html)

JoeProbasco23 04-08-2016 02:52 PM

89 RS/ New to TBI tech
 
Im restoring an 89 RS with a 305 TBI....have had high idle issues,searched for vacuum leaks,replaced base gasket,didn't help. Was out yesterday,started the car,idle was suddenly decent,backed out of spot,put into drive and engine stalled. Tried to restart,cranks fine,getting fuel,but won't start. I know this could be multiple issues,would appreciate a more knowledgeable opinion on where to start....thx

thtanner 04-08-2016 03:10 PM

Re: 89 RS/ New to TBI tech
 
Are you getting a check engine light? If so, what codes does it show?

JoeProbasco23 04-08-2016 03:24 PM

Re: 89 RS/ New to TBI tech
 
No engine light at start up,but after driving about 10 minutes,yes. Other than the high idle,was running fine until yesterday's episode??

JoeProbasco23 04-08-2016 07:10 PM

Re: 89 RS/ New to TBI tech
 
Tried to get codes by jumping the port,not getting any response,must be a larger problem....

Schurkey 04-09-2016 01:58 AM

Re: 89 RS/ New to TBI tech
 

Originally Posted by JoeProbasco23 (Post 6026497)
No engine light at start up,but after driving about 10 minutes,yes.

How long has the light been coming on after driving?


Originally Posted by JoeProbasco23 (Post 6026497)
Other than the high idle,was running fine until yesterday's episode??

Is that a question or a statement?


Originally Posted by JoeProbasco23 (Post 6026544)
Tried to get codes by jumping the port,not getting any response,must be a larger problem....

Are you connecting the correct two terminals?

JoeProbasco23 04-09-2016 05:32 AM

Re: 89 RS/ New to TBI tech
 
Connected a wire from slot A to B,turned the key to ON position,start up lights came on as normal,but no flashing sequence and no codes. Engine light was coming on after about 10 minutes of driving,but wasn't causing any change in how she was running. Went back to basics last night and checked for spark and there wasn't any,so now I'm thinking ICM? Did have the high idle issue,which seemed to go away seconds before she died,so I'm not sure if that's related. Going to throw on a new ICM this morning and see where I'm at........thx

JoeProbasco23 04-09-2016 05:50 AM

Re: 89 RS/ New to TBI tech
 
FYI....appreciate the help...I'm a gearhead from the 70/early 80's and I missed out on third gen tech having exwives and kids,so I'm sure you'll see me plenty!

Schurkey 04-09-2016 08:29 AM

Re: 89 RS/ New to TBI tech
 
Are ALL of the fuses good?

JoeProbasco23 04-09-2016 09:44 AM

Re: 89 RS/ New to TBI tech
 
Fuses r good,tested the ICM,it was bad,replaced,still not starting...cranks,getting fuel,and still not getting any feedback checking codes?

JoeProbasco23 04-09-2016 12:49 PM

Re: 89 RS/ New to TBI tech
 
got it! Was the inline ECM fuse....thx for the info gyz

DynoDave43 04-10-2016 01:17 PM

Re: 89 RS/ New to TBI tech
 

Originally Posted by JoeProbasco23 (Post 6026743)
got it! Was the inline ECM fuse....thx for the info gyz

Good find! :thumbsup:

JoeProbasco23 04-10-2016 01:35 PM

Re: 89 RS/ New to TBI tech
 
Thx,took a day and a half,but I was fearin something worse.....


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