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I have a 94 1500 series gm truck. 5.7l I need to take the throttlebody apart. to replace a part. after removing the top plate. how do I get the injectors out.

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Posted on Jan 02, 2017

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SOURCE: I have a problem with

I had the same problem with my 1990 chevy 1500 (350) replaced the plugs and wires no luck. I replaced the fuel pressure regulator, still no luck. So i called my mechanic he said it would either be the map sensore or the coolant temp sensor. I didnt figure the coolant temp sensor would cause my truck to flood but it was a 17 dollar part so i gave it a shot, took 10 seconds to switch it out with a 19mil deep socket. Truck fired up and ran like a top no more flooding. =)

Posted on Nov 20, 2011

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SOURCE: I have no power at the throttlebody wiring, wont start the truck

check for spark could be your coil pack or a fuse for that a way to check is to hookup a 12 volt jumper wire to your + side of the coil and try it if still no spark then try seeing if yur coil is getting good ground

Posted on Dec 01, 2011

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SOURCE: Throttlebody, injectors pouring gas instead

Change the ect sensor by the thermostat housing it is telling the ecm the outside temp is colder than it really is and the ecm is sending too much fuel to the TBI. NOte: the tps switch only works for idle and the egr is only for gas recirculation it will not cause the engine to flood.

Posted on Jun 03, 2015

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The first thing I would do, is clean your throttleplate and throttlebody. The throttleplate builds up dirt as does the surrounding housing and it chokes off the air supply needed for maintaining idle. On 3800 engines, there is a screen that blocks access to the plate, so you'll need to remove the throttlebody and clean it from the backside. It's relatively easy and straightforward to do. Remove the mass air flow sensor from the top of the throttle body and clean the element with alcohol and a q-tip. Then spray the throttle plate and housing with carb or throttlebody cleaner and scrub with a brass brush. Open the plate by hand and scrub the housing. Wipe it clean and reassemble. See if that helps and let me know either way, whether its now good, or whether it still stalls and we'll work together if need be to rectify Idle Air Control motorthe IAC motor can close during cruise, and get stuck in the dirt that builds up in the housing. When you come to a stop the pintle may get stuck in the dirt, causing the stall. Then it frees up if it still has problems after this try changeingthe coils and module

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Sounds like you need a tune up,and a throttlebody cleaning.
Use 2+2 carb cleaner to spray your throttlebody until you don't see any black carbon on the throttle plate.

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