Tag Archives: Intake

Intake manifold gaskets are a common cause for coolant leaks and vacuum leaks. This can also cause a check engine light or hard starting of your car or truck.

2000 3.8 L Camaro trouble starting and runs rough

Hi I have a 2000 Chevy Camaro V6 3.8 L that will start at times but then dies after a few minutes. Got it started once and ran fine but when I was almost to where I was going it died with no warning just shut off still had power though. Replaced the fuel filter…

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2001 GMC Safari Coolant Leak and Rough Idle

Hello. My son has a 2001 GMC Safari with a 4.3 engine. He complained of a “rough idle” along with a coolant leak. Not knowing what the rough idle might be, I suggested he bring a new set of spark plugs. I listened to the engine then looked and found a bad left side motor…

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Check Engine Light Code P0300 On GM 2.2L and 2.4L

We have been seeing quite a few problems with the GM 2.2L and 2.4L engines. Mostly on model years 2005 through 2009. This engine is very common in the Chevrolet Malibu, Cobalt and HHR. As well as the Pontiac G5 and G6. This is the 4 cylinder.  The problem I am going to talk about…

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Where Is The Coolant Temp Sensor Located?

Where is the Coolant temperature sensor located at on a 1999 Oldsmobile Silhouette? ProTech: It is located on the left side of the front cylinder head on the intake. ok if that is bad will it keep the cooling fans from coming on have replaced the Coolant temperature switch and all 3 relays and the…

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Location of Coolant Bypass on Chevrolet Impala 3800

Were is the bypass hose on a 3800 V6. ProTech: Are you referring to the coolant bypass hose? Yes The 3800 does not really have a bypass hose. It is a small plastic 90 degree elbow. It is located in the upper intake manifold on the front of the engine. I was thinking that because…

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2003 Chevy Venture 5 Volt Reference Codes

I am getting code P1639 on my Chevy Venture van 2003. This is supposed to indicate a low 5 volt reference at the AC pressure sensor and the fuel tank pressure sensor. I have measured the voltage going to both sensors and get 5 volts. This is a gray wire in both cases. The AC…

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Oil and Coolant Mixing In Engine- Pictures

I had the pleasure recently, or displeasure rather, of getting a customer’s vehicle that was overheating and running very poorly. Once I got in and started it up, I knew it was going to be pretty messed up. The engine was knocking, misfiring, and almost immediately going into the red on the temperature gauge! I…

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