Question about 1988 Chevrolet C1500
Injector pulse is conrolled by the computer and the spark is controlled by the inghtion mudule. even though the spark is happening the computer gets it's pulse information for the inghtion module too. So the ingtion module ( in the distrubutor ) can be bad on the injector circuit. If the fuel pressure is too low the fuel won't flow either. On Vortec engines the fuel pressure has to be 50 PSI or higher or it won't even start. The throttle body engines have to have 20. If not the fuel pumps hose inside the fuel tank may have a whole in it so the pressureized fuel from the pump just leaks back into the tank as the pump is in the tank. This happens alot. The injectores ( in the throttle boby) ( you did'nt mention the engine in yopurs) should have power on the one wire with the key on. The other wire should have a pulsing ground as the engine is cranked. To test this, connect a test light to the battery positive and the pointer to the wire and crank the engine if the light flashes the circuit is good and if the power is good this circuit is'nt the cause of your problem. On the throttle bobvy engines theirs a tap in the fuel line going to the the throttle bady near the back of the intake. a pressure gauge can be connected here to check the pressure. some don't have this fitting and you have to remove the fuel filter and put a tee connection wher the filter was and check the pressure there,. The fuel filter is inside the frame rail on the drivers side 1/2 way down the side on the truck, towards the center of the truck. Fuel pressure is a common problem.
Posted on Mar 19, 2011
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Aug 03, 2008 | Ford Ranger Cars & Trucks
Nov 14, 2015 | Cars & Trucks
Jul 15, 2011 | 1988 Oldsmobile Cutlass Ciera
Jun 12, 2011 | 1990 Pontiac Bonneville
Jan 04, 2011 | Pontiac Grand Am Cars & Trucks
Nov 25, 2010 | 1994 Toyota T100
Aug 02, 2010 | 2001 Ford Crown Victoria
Jul 26, 2009 | Toyota Highlander Cars & Trucks
175 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: