1991 Honda Accord wont start

Tiny
JDBURNS
  • MEMBER
  • 1991 HONDA ACCORD
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 175,000 MILES
During the summer only, when it gets hot (80 or higher) SOMETIMES the car will not start. The engine will turn over, but it sounds like no spark or no fuel. On an OLD car I would suspect vapor lock. After the car sits in the shade (or temp drops) it will start right up. Any ideas
Wednesday, May 20th, 2009 AT 2:07 PM

2 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi jdburns,

This symptoms is commonly caused by an intermittently malfunctioning PGM-FI main relay. The contacts on the circuit board is faulty and resoldering them usually works.


https://www.2carpros.com/forum/automotive_pictures/192750_PGMFIRelay92Accord_2.jpg

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Wednesday, September 30th, 2020 AT 10:30 AM
Tiny
THIS IS MIKE
  • MECHANIC
  • 686 POSTS
Replied on May 20, 2009

The engine will turn over, but it sounds like no spark or no fuel.

Don not wait check it-do below.

Get a starting fluid/ether/better off gas in a spray bottle and spray into the carburetor or the throttle body on an EFI. Did it start and shut off? If not disconnect a spark plug wire or two and ground it to the engine have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, distributor pick-up coil, ignition control module, ECM, ignitor cam and crank sensors.

Answered by rasmataz
68 questions asked
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Wednesday, September 30th, 2020 AT 10:30 AM

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