Question about 1998 Chevrolet S-10 Pickup
Most likely if there is no mass air sensor you actually unplugged the inlet air temperature sensor IAT. This is a little bead like thermistor that sits in the ducted air stream to measure incoming air temperature. Without an air mass sensor your engine will have instead a manifold absolute (air) pressure MAP sensor. This measures the absolute air pressure (the difference between the atmospheric air pressure outside and the drop in pressure inside) in the inlet manifold. The drop in pressure in conjunction with air temperature allows the engine control unit to calculate the amount of air in the engine to which it adds the correct amount of fuel per each injection cycle. The loss of the IAT signal is not critical as the ECU will assume a default value. However when extreme low temperatures are encountered the absence of the IAT may be become noticeable as the charge of air entering the engine will be denser and as a consequence the fuel mix will be much leaner; maybe to lean to start up.
Posted on Sep 08, 2010
Testimonial: "Very helpful!! Gave me info that parts suppliers didn't have."
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:
Jul 06, 2017 | Ford Cars & Trucks
Sep 24, 2015 | Nissan Cars & Trucks
Mar 07, 2015 | Dodge Ram Cars & Trucks
Jan 14, 2015 | 1996 Nissan Pickup
Feb 16, 2012 | Audi A4 Cars & Trucks
Jun 07, 2011 | Volvo 240 Cars & Trucks
Jan 26, 2010 | 1999 Mazda Protege
Oct 01, 2009 | 2002 Volkswagen Beetle Turbo S
Jan 17, 2009 | 1994 Ford Thunderbird
1,167 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: