1996 Chevy Silverado 7.4L Idle Too High Problem Solved (EASY)

[@paulg.yarger8797]

Thanks Brother!!! I'm Living, learning, and loving!!! God Bless Maintainers!!!

[@gqautodiagnostics]

Thank you for the comment

[@hernandezmancera8421]

Code 1509 I have a vacuum leak, not on the vortex cover but in the back area of it. Its the breathing elbow itself and I can't find a replacement for it, ive done look everywhere .What can i substitute for it??

[@gqautodiagnostics]

Hello. Can you give me the year make and model of the vehicle?

[@diablocustomschoker2058]

Tankyou buddy I got that problem whit mialibu 78 -7.4👌✌🏻

[@AudiTwin]

I have the same vehicle, when i drive it for while, it feels like it gets no gas, i can barley go up a hill. but if I take it slow and keep mashing the gas pedal I might make it home. I have zero problems on startup and zero problems at idle

[@fabiancastellanos7196]

Timing is of

[@spacebound2195]

I have a 5.7 idling at 2200rpms. With no helpful codes. Could iac be bad and cause rpms to go that high? Spraying manifold with brake Clean shows no leaks.

[@gqautodiagnostics]

Hello, thank you for posting your question. It is possible that the idler got stuck and that would be the reason why idle is too high. However, check the throttle cable (drive by cable) and the cruise control cable that both are in the correct position. Keep me posted.

[@spacebound2195]

@@gqautodiagnostics throttle cable was good. The IAC was stuck fully extended. Shes idling at @650 atm!

[@gqautodiagnostics]

@@spacebound2195 AWESOME! I am glad that you found the problem. Thank you for posting your question here and I hope that the video was helpful for you. Please consider subscribing to the channel and God bless you and have a great New Year

[@alwaysbegrateful9011]

Hi ,My 97 K1500 5.7 Liter idles high. I replaced IAC & TPS sensor. I also replaced 3 oxygen sensors. Still idles high. Plugs ,Wires. Cap and Rotor are good. Any suggestion? Also ,No vacuum leaks. Hmmmm

[@Justhatehere]

​@@alwaysbegrateful9011did your ever figure out the problem? I've been dealing with something similar check all vacuum lines still idling around 1k on park and 900 on drive .

[@EataPeachMike]

I have a 97 GMC c1500 and when I start it it idles to 1500rpms for a couple of seconds then goes to normal idle for a second then jumps back to 1500rpm then goes back to normal and it does it every time I start it. Do u have any idea what can be causing that? Any help is appreciated. Thank you

[@gqautodiagnostics]

Hello. Thank you for posting your question. Have you disconnected the idler control valve and see if the problem persists? What previous repairs have you done to the truck? Keep me posted.

[@EataPeachMike]

@@gqautodiagnostics no I haven't and I've replaced the IAC valve with a new one and it got worse. It would idle to 2500 rpm so I just put the old one back in for now

[@EataPeachMike]

@@gqautodiagnostics I will do what u tomorrow. Thank you and I'll keep you posted

[@EataPeachMike]

@@gqautodiagnostics Do I do that on a cold start or after normal running temp?

[@griffinlasher2246]

Thank you

[@AaronBecerra-nt2lt]

Do I have to calibrate the iac valve?

[@gqautodiagnostics]

Hello! Thank you for posting your question. No, no need to calibrate the idler the computer will reset. you can disconnect the battery for a minute and let the car idle and it should go back to normal. Let me know if you have any questions.

[@AaronBecerra-nt2lt]

@@gqautodiagnostics Gracias

[@gqautodiagnostics]

@@AaronBecerra-nt2lt de nada!

[@michaelnelson9140]

Good old Chevy! This one has 351000 on her.

[@CalvinNorton-t3l]

😊😊