No start when temp. hot outside
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Senior User
Joined: Jul 2006
Posts: 223
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From: ROUND ROCK, TEXAS
No start when temp. hot outside
Hey ranger guys, have quick question to maybe help figure something out on a buddies truck, if he leaves his 1994 ford ranger 2.3 out in the sun and the truck gets hot from the outside temp. it wont start, but in the morning or evening when not so hot it will start just fine, ive never had a problem like this before. any ideas?
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Senior User
Joined: Jul 2006
Posts: 223
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From: ROUND ROCK, TEXAS
Thats what i told, but these condos are sparting up like weeds here in austin, and dude had to go off and live in one of those, so his garage at best is an oak tree by the front door. From what ive seen and heard is it sounds like its not getting gas, but *** soon as sun goes down or it gets cooler, starts right back up like nothin, just the wierdest thing to me. ive tried starting fluid and nothing, checked all caps and fuses, but still nothin either w that approach.
Junior User
Joined: Feb 2004
Posts: 61
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From: North Orange County
I once had a somewhat similar problem with a different car, but it wasn't caused by the sun.
The car would start, run for a while, and then stall.
My then-mechanic traced the problem to a corroded electrical connection. If I recall correctly (this was nearly 25 years ago), it was the coil wire. There was a brass-like ring inside of a rubber boot that had gotten corroded, and when it heated, the metal expanded and broke the connection.
The problem totally stumped my grandfather, who was a pretty solid mechanic himself.
The car would start, run for a while, and then stall.
My then-mechanic traced the problem to a corroded electrical connection. If I recall correctly (this was nearly 25 years ago), it was the coil wire. There was a brass-like ring inside of a rubber boot that had gotten corroded, and when it heated, the metal expanded and broke the connection.
The problem totally stumped my grandfather, who was a pretty solid mechanic himself.
Moderator
Joined: Jan 2004
Posts: 13,851
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From: SW Va
When you say it won't start, do you mean the starter motor won't crank the engine, or that it cranks the engine, but the engine won't run???
If it cranks but won't run, it would be helpful to know if it's missing fuel or spark, or both.
So use an inductive type timing light to safely check for spark.
If you don't have a fuelpressure gauge, listen for the fuel pump to run for a couple of seconds at KOEO, before cranking the engine.
When it won't start are all of the dash warning lights on at KOEO????
Let us know what you find & we'll go from there.
If it cranks but won't run, it would be helpful to know if it's missing fuel or spark, or both.
So use an inductive type timing light to safely check for spark.
If you don't have a fuelpressure gauge, listen for the fuel pump to run for a couple of seconds at KOEO, before cranking the engine.
When it won't start are all of the dash warning lights on at KOEO????
Let us know what you find & we'll go from there.
Elder User
Joined: Oct 2005
Posts: 786
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From: Reno nv
something I just found yesterday: Vapor lock on boy's friend's 94. at 1/4 full tank or less you start sucking air into the fuel, and at about 90 or so degrees you are no longer getting enough fuel to run. a sack of ice applied to the fuel regulator and anywhere on the engine top that will hold it cooled it enough to run fine again. runs good @ over 1/4 tank, probably since there is enough mass in the tank to not get much above ambient.
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