Question about 1991 Volvo 740
Check your crank sensor. The symptoms you describe indicate a timing error. When you push hard the ECU tries to advance the ignition according to the signals it receives from the the crank position sensor CPS. These signals are either being interrupted or corrupted. Make sure the cps connection is dry, free of dirt and corrosion and that there is continuity in the wires with no obvious breaks or insulation removed. Remove the CPS and check that it is clean and free of body cracks. If problems persist swap the crank sensor out for a new one. These sensors are prone to heat and age.
Posted on Oct 16, 2010
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:
Nov 15, 2015 | Cars & Trucks
Sep 06, 2014 | Cars & Trucks
Oct 13, 2012 | 1995 Isuzu Rodeo
Jul 19, 2012 | 2001 Dodge Durango
Apr 08, 2012 | 2002 Jeep Grand Cherokee
Jun 16, 2011 | 2004 Suzuki Verona
Sep 23, 2010 | 1996 Volkswagen Jetta
Aug 05, 2010 | BMW L7 Cars & Trucks
Jul 06, 2010 | 1999 Saturn SL
94 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: