C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

C4 injector change issues

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Old Feb 2, 2017 | 07:01 PM
  #21  
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Also i sprayed throttle body cleaner on all vacuum lines with no change in the way it idles
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Old Feb 2, 2017 | 07:03 PM
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It wasnt bad but now I'm thinking it was bad enough.
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Old Feb 2, 2017 | 07:03 PM
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Before you spray the things, see if the ECM is reacting to a leak. Check IAC counts
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Old Feb 2, 2017 | 07:05 PM
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I ordered the gasket that day im going to try to put it on tomorrow
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Old Feb 2, 2017 | 09:04 PM
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Originally Posted by Tredzilla
Hey guys i been thinking when i put the throttle body back on i noticed the gasket had a bad spot could that be causing (a vacuum leak) or any kind of problems with the idle surging? Please respond guy's and thanks to everyone helping me
Do not do that again.
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Old Feb 2, 2017 | 10:21 PM
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I couldn't get a gasket the day i put it together and i ordered one. Im sorry i will do better.
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Old Feb 2, 2017 | 10:27 PM
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Originally Posted by Tredzilla
I couldn't get a gasket the day i put it together and i ordered one. Im sorry i will do better.

Don't do that with a girl and an old condom
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Old Feb 3, 2017 | 01:52 PM
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Ok guys i fixed my check engine light today and jumped a and b to get codes i got code 34. I believe that's maf or egr any advice?
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Old Feb 3, 2017 | 02:52 PM
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Did you have a code before? Also did the car have a K&N air filter?
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Old Feb 3, 2017 | 03:04 PM
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I just got the car 2 weeks ago. No k and n air fliter
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Old Feb 3, 2017 | 03:06 PM
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On the plug going to the maf sensor i only got 7 volts with the key turned over is that normal?
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Old Feb 3, 2017 | 04:13 PM
  #32  
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This situation sounds all so familiar, not sure you have the same problem but I found that my second set of injectors was the BOSCH3 24 lbs, but I still had a throttle idling problem. This was because the battery had been dead for awhile and the memory must have gone out of whack. I replaced the TPS but had to progam it by the sequence of unplugging the connector, turn the key to on, wait ten seconds, turn the key off, put the lug back on the TPS. This sequence tells the TPS what the proper position is. It worked for me, give it a try
Woody
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Old Feb 3, 2017 | 04:29 PM
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For a C4? I have never reprogrammed for a TPS. In my year, it accepted what start up voltage was as 0 degrees throttle angle and base voltage. Earlier years just had to be set around 0.54V
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Old Feb 4, 2017 | 06:42 PM
  #34  
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Ok i found a broke vacuum line and fixed it. Now i have a fuel leak at the supply line going into the fuel rail and i don't have a o ring that will fit it. Where should i buy one guys?
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Old Feb 4, 2017 | 06:43 PM
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Any auto parts store or a truck repair shop. Have them match it
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Old Feb 4, 2017 | 07:42 PM
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I got the oring kits from autozone and they ordered a kit and still not the right o ring
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Old Feb 4, 2017 | 08:49 PM
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Originally Posted by Tredzilla
I got the oring kits from autozone and they ordered a kit and still not the right o ring
Maybe take the O-ring to the truck stop which has a weekend repair shop and see if they can match it?
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