Question about 1990 Chevrolet C1500
Unresponsive to gas peddle at times and has major dead spots. not sure if its the injectors or the timing or if i need a tps sensor
Based on what you said, I would say the engine is starving for fuel.
The computer has to be disabled to set timing - there should be a procedure for that.
I would start with checking fuel pressure at the throttle body. If the TPS is faulty you should have a fault code in the computer.
If the fuel pressure is ok and there are no codes, I would suspect the injectors.
Posted on Dec 04, 2012
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
have you checked the filter, i know you state the fuel lines are clear though. likely fuel injectors have lost flow. the TBI injectors can be cleaned, but i usually just replace them. but check them using a timing light hooked to the coil wire for timing of each injector spray. the pattern under the light should be even and conical shape, no major spatter. if one shows low volume, the other one should be replaced at same time, it will save you having to change it when you put brand new next to old one a have same problem again. only replace with brand new, i've had 7 bad remanufactured injectors on one truck at one point in time, only replace with new!
Posted on Jul 08, 2010
SOURCE: 1990 chevrolet c1500 silverado
Things to check
ignition system: coil, plugs,rotor,cap, lead wires
air filterfuel filter
air leaks at throttle body and manifold
Posted on Oct 09, 2008
can be the distributor or maybe the fuel pump let the truck sit and then turn key almost on but not enough to initiate start up and see if you hear pump in the gas tank and if thats not it, it could very well be your distributor it might be moist in the cap or button area
Posted on Dec 11, 2008
SOURCE: hesitates on acceleration
Does the car always hesitate during acceleration? If it ALWAYS struggles when it starts or ALWAYS hesitates on acceleration then I would say the issue is fuel delivery. If the problems are more intermittent and come-and-go then it could be an electrical issue.
I would start by changing the fuel filter. Changing plugs, wires, cap, and rotor are all good things to do as your budget will allow. I doubt you will have to change your injectors.
If you end up replacing any rubber fuel line, be sure to use the high-pressure stuff made for use on fuel injected cars.
I hope this helps! -Nick
Posted on Apr 10, 2009
Tips for a great answer:
Apr 04, 2014 | 1990 Chevrolet C1500
Dec 07, 2012 | Cars & Trucks
Feb 25, 2012 | 2006 Ford Freestar
Jan 03, 2011 | 1994 Chevrolet C1500
May 02, 2010 | 1992 Honda Accord
Oct 06, 2009 | Acura TL Cars & Trucks
Mar 14, 2009 | 2001 Chevrolet Monte Carlo
874 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: