20 Most Recent 2001 Chevrolet Express - Page 5 Questions & Answers

then find the buzzing and silence it leave it on until you find it hideing inside of vehicle some where down at knee level follow the sound you will find it

This is located on the fuel rail on the top of the motor will look like a small cylinder with a vacuum line attached to the top also will have a fuel line attached either on the bottom or side.

It appears from your description, that several of the Combustion chamber GLOW PLUGS have failed. To find out which ones they are. The cheap and nasty way, is to remove them all, using a standard SAE or METRIC Tube socket, and test them in turn. If it is GOOD it will glow after about 4 seconds, if not, then it is Junk.

Place each "plug" with the body against a FULLY Charged battery, NEGATIVE terminal post. With a length of 10/12 gauge wire,,,,,, one end fastened securely to the POSITIVE post, touch the wire onto the threaded stud end of the plug. The circuit is then complete, and the result will be as described above. Be CAREFUL, as these little "B's" get HOT<HOT< HOT.
Regards David.

no, i not think it is fuel reg. sounds like maybe timing off ,bad sensors. does check engine lite come on or have you pull codes. i would check these things. if you can do a compression test on the engine. is it high mileage ? do you have vacuum leak ? there are lots of things can be going on to solve it is to start trouble shooting !!!!

you should be able to drop the tank a few inches to reach in and disconnect the lines

yes

use a hotwire to check the pump is working, then if it is, its a fuse.
or even the switch(hardly likely).

hte vacumn pipe from the inlet manifold ,renew it ,but you have to remove the inside engine cover to gain access,also observe the T pieces and the feeds to the other places ,easy job to do ,its just getting all the inside out

i read about this in popular mechanics, because of the thinning air the map sensor doesn't read enough vacuum and leans the fuel mixture back, one of the solutions is to run higher octane fuel, try contacting popular mechanics automotive dept, to see if there is any other cure
hope this helps

inside distributor

According to my service manual, it does not have one. It does have a crankshaft position sensor that is held in beside the crank pulley on the drivers side.

give it a complete tune up and change the fuel pressure regulator and check the timming gear

change the idm! injector drive modual located on the side of the injector pump

Blower motor resister unit needs to be replaced.

Depending on the engine it is located in the intake manifold near the throttle body. The computer uses data from this sensor to calculate the air / fuel mix. It will be connected to the main wire harness with a slealed connector, usually two or three wires. Allow the computer to recalculate for a few miles......

need to check and see if there are any code