Engine stops for no apparent reason?
Thread Starter
Cruising
Joined: Aug 2003
Posts: 13
Likes: 0
From: Yuba City Ca
Engine stops for no apparent reason?
Hi Everyone! My 85 Corvette runs great 99 % of the time. However sometimes it will just shut off with no warning. Leaving a stop light or just ideling, I just pull over crank the engine usually on the second try starts up runs great? I have installed a new fuel pump, both fuel filters, new cap, rotor and plug wires. New plugs.......Trouble shooting guides not addressing this problem? Advice is welcome!
Team Owner
Joined: Jan 2003
Posts: 20,324
Likes: 250
From: Summerland B.C. Canada
Re: Engine stops for no apparent reason? (85 Habu)
Possible IAC problem if it is associated with idle. Have you cleaned the TB and IAC lately ??
:cheers:
OH !! Welcome to the forum :seeya
Read these links,they may help you.
https://www.corvetteforum.com/techti...=195&TopicID=2 https://www.corvetteforum.com/techti...D=55&TopicID=2
[Modified by AGENT 86, 6:54 AM 8/15/2003]
[Modified by AGENT 86, 7:00 AM 8/15/2003]
:cheers:
OH !! Welcome to the forum :seeya
Read these links,they may help you.
https://www.corvetteforum.com/techti...=195&TopicID=2 https://www.corvetteforum.com/techti...D=55&TopicID=2
[Modified by AGENT 86, 6:54 AM 8/15/2003]
[Modified by AGENT 86, 7:00 AM 8/15/2003]
Instructor
Joined: Jun 2003
Posts: 176
Likes: 0
From: Columbia SC
Re: Engine stops for no apparent reason? (AGENT 86)
Consider the four way connector and its associated wires from the distributor. If the ECM doesn't receive the reference signal from the distributor, it will immediately stop pulsing the injectors. If this is an intermittent problem, it will be a bear to check out. If the EGR were at fault, it would most likely shut off when decelerating, more so than at idle. Hope this is a little help.
Melting Slicks
Joined: Jun 2002
Posts: 2,168
Likes: 16
From: Phoenix AZ
Re: Engine stops for no apparent reason? (loflyin)
I had a similar problem which turned out to be the wires at the MAF power relay connector shorting out. I have seen other members post pictures of the same thing; the insulation covering the wires near the connector somehow shrinks back, leaving bare wires exposed. It's worth a look...
BTW these relays are located behind the battery.
BTW these relays are located behind the battery.
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Re: Engine stops for no apparent reason? (ld85)
All the above would be things to check.
BTW Welcome to the forum. Interesting user name. Been in SE Asia? Seems very few people know what a habu is.
BTW Welcome to the forum. Interesting user name. Been in SE Asia? Seems very few people know what a habu is.
Race Director
Joined: Aug 2002
Posts: 13,356
Likes: 0
From: tucson AZ
St. Jude Donor '04 & '05
Re: Engine stops for no apparent reason? (85 Habu)
Just a few thoughts. The fuel pump? And or the fuel filter?
Have you checked fuel pressure at the injectors?
Just a thought.
Good Luck
tony
:chevy
Have you checked fuel pressure at the injectors?
Just a thought.
Good Luck
tony
:chevy
