Posted on Jun 11, 2009

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95 Chevy C-1500 runs rough at idle and during accelleration. OBD-1 code 45. (rich exhaust)Runs ok at highway speed but gas milage seems worse. Replaced coil, cap, rotor, plugs, wires, fuel filter. BG-44K did not help.

jm35745 Jun 11, 2009

Thanks for the reply. What would you recommend I use to clean the throttle body and injectors?

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Harvey N Tawatao

Chevrolet Master 3,854 Answers
Posted on Jun 11, 2009

Harvey N Tawatao

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Check the vacuum line to the fuel pressure regulator and check to see if the fuel pressure regulator has gone bad. Give the throttle body a good cleaning and the injectors too. Do not use carb cleaner, it's to corrosive for the gaskets used in the throttle body. The other thing too that would cause this is a stuck or bad EGR valve, Try cleaning the EGR valve too since your cleaning the throttle body. Good luck and keep me posted.

Harvey N Tawatao Jun 11, 2009

Any parts store like Auto Zone will carry numbers of injector cleaner and throttle body cleaner. They are all similar, i use what ever is on sale at the time or the best buy for it's size. I know Auto Zone has loner tools and you can see about using there Fuel pressure gauge, it only take about 5 min to check the fuel pressure and they's will have the specs to the fuel pressure.

If you do remove the EGR valve to clean it, buy a new gasket. Be glad to help.

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1995 K1500

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95 Chevy C-1500 runs rough at idle and during accelleration. OBD-1 code 45. (rich exhaust)Runs ok at highway speed but gas milage seems worse. Replaced coil, cap, rotor, plugs, wires, fuel filter. BG-44K did not help.

1 Answer

Harvey N Tawatao

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95 Chevy C-1500 runs rough at idle and during accelleration. OBD-1 code 45. (rich exhaust)Runs ok at highway speed but gas milage seems worse. Replaced coil, cap, rotor, plugs, wires, fuel filter. BG-44K did not help.

1 Answer

Harvey N Tawatao

Add Your Answer

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