The
following are the general instructions on the start of diagnosing any
electronically controlled engine or transmission problem. The
engine and the automatic transmission (transmission control is only
for automatics, engine is still computer controlled no matter the
transmission type) in this vehicle are computer controlled and in
most cases when a fault occurs a fault code is stored in the memory
of the computer control module. There are exception to this, such as
the Mass Airflow Meter and fuel pressure problems. What must be done
is to have all the basic testing done such as a scan of the system
for fault codes as well as a check with a live data scanner tool for
engine functions that are not within range of normal, a trained
technician is required to know what is correct and what isn't, then
based on careful diagnostics done from a factory repair manual the
correct part is replaced or the wiring repaired or the computer
replaced (known as the PCM or ECM,ECU), which is very rarely the
problem. Other basic checks must be done as well such as mechanical
problems with the engine as well as engine state of tune and mileage
on the engine. The transmission can have mechanical issues as well
such as no gear engagement at all or a failed pump or other pressure
related problems. Also engine mechanical problems can and do cause
many drive-ability related problem such as rough idle and other
symptoms.
SOURCE: i am trying to remove my fuel tank from a 96 chevy suburban and replace the fuel pump
ok i'm going to guess that you have a gasoline engine with a side tank like in a pickup truck. if you have a diesel let me know, things might be a little different. here's the step by step for a gas side tank. before you start, disconnect the battery negative cable.
1. drain the fuel from the tank (they don't tell you how, just get as much out as you can)
2.raise and safely support vehicle (get it high enough that you can get under it to work on it)
3.loosen the fuel neck hose at fuel neck and disconnect filler neck from tank
4.support tank and remove tank support straps and insulator strips
5.remove frame mounted bracket
6.lower fuel tank shield
7.lower fuel tank enough to gain access to fuel and electrical connections
8.disconnect fuel feed and vapor hoses
9.disconnect electrical connectors
10.remove fuel sender assembly and seal ring
now to install new tank
1.install NEW seal ring and install sender
2.raise tank enough to connect fuel feed /vapor hoses and electrical connector
3.raise tank fully
4.install fuel tank shield
5.connect fuel tank filler neck and tighten clamp
CAUTION tighten fuel strap fasteners in steps, alternating between straps, until proper torque is reached. failure to properly follow this step can cause bottom of tank to deform. fuel gauge may read improper level if this occurs
6.install fuel tank brackets and insulator strips
torque nuts to 115 in-lbs
7.install fuel tank filler cap
8.connect battery negative cable
9.turn ignition switch off and on and check for leaks
it's pretty much the same for rear tank, just different location, may have off-road shield in back and torque spec is 47 ft-lbs, not 115 in-lbs. you still have to alternate when you torque straps or you risk deforming tank. hope that helps
SOURCE: 2004 chevy suburban no or very sluggish
if you've replaced spark plugs and wires lately, try simply running lucas fuel treatment to your gas, it may be an injector may be clogging or dirty injectors period. if that does'nt work, try replacing the idle control sensor. does it start and die sometimes on it's own? idle rough sometimes? that points to several things, like bad egr valve, is check engine light on?or bad idle control sensor, may be a bad gas cap lid even. if the fuel pressure coming from fuel pump isn't right it will not preform right at all. at least this are some points to look for hope i helped and thanks for choosing fixya.com
SOURCE: I have a 96 chevy
That should not cause it to be sluggish, but- It will hurt fuel economy..... The O2 Sensor(s) play a limited role in fuel control....
139 views
Usually answered in minutes!
×