Question about 1998 Chevrolet S-10 Pickup
The surging may be from low coolant, when air in the coolant hits the temp sensor passage it changes the signal to the ECU and it searches for the correct idle.
Jack the front of the truck up to make the radiator neck the highest point and slowly top off the cooling system until full.
Check the sensor itself for damage and try to make a better repair at the connector,
Disconnect the battery for a few minutes to clear the computer and see what happens.
When the engine warms up something is expanding and causing a leak. Spray down the vacuum hoses along with any intake gaskets first with carburetor cleaner while the truck is idling and see if that causes the engine to rev up. If it does, you have a vacuum leak.
Otherwise, look into the Mass Airflow sensor. You might have an air fuel regulation problem at idle as you mention it behaves normally under acceleration when on the freeway.
Check this link too….
Let us know if you have something more to know else accept the suggestion.
Thank You for contacting Fixya.com
Posted on Jul 30, 2010
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Feb 03, 2016 | 1998 Chevrolet S-10 Pickup
Dec 10, 2015 | 1994 Chevrolet S-10
Mar 15, 2014 | Cars & Trucks
Mar 29, 2013 | 1998 Chevrolet S-10 Pickup
Nov 29, 2011 | 1998 Chevrolet S-10 Pickup
Sep 02, 2011 | 1987 Chevrolet S-10 Pickup
Nov 23, 2010 | 1997 Chevrolet S-10 Pickup
Nov 14, 2009 | 1998 Chevrolet S-10 Pickup
Oct 02, 2009 | 1998 Chevrolet S-10 Pickup
Apr 09, 2009 | 1998 Chevrolet S-10 Pickup
494 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: