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jennyen
Dodge Dakota
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7/25/2002
11:46:57

Subject: vapor lock?
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My 89 f. injected Dodge dak stalls on hot days. Always starts in the cool nmorning! When it stalls, the engine gauge does not read as HOT. I replaced the fuel filter and cleaned the injectors and it STILL does it. I was told possibly a weak fuel pump. Any ideas? Thanks!




Bob W
GenIII
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7/25/2002
14:12:35

RE: vapor lock?
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I would try the ignition circut when chips start to go bad heat will push them over the edge.

Gibson headers, Gibson Cat-back, Edelbrock IAS shocks, K & N drop in, 180 stat, Jet stage II chip, ARE Lid

Muzzy
GenIII
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7/27/2002
03:00:29

RE: vapor lock?
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Jennyen-

Have you tried pulling the codes? Turn your ignition off and on 3 times. On the third time the check engine light will flash the codes to you. A 55 means it's done.

Vapor Lock went away with in-tank fuel pumps. The lines are fully pressurized. Vapor lock used to occur when the pump was on the engine. It would create a low pressure area in the line going to the tank and on hot days the fuel would vaporize in the line.

The only things I can think of are a bad MAP sensor, bad gas, or like Bob mentioned an ignition problem. When it stalls, does it start right back up? If not, check for spark right away. Then you know if there isn't any, it's an ignition problem. I hope this helps.

-Muzzy


2001 EC Dakota 4x4 - 287ci V8 - 5 Speed - 3.92 gears/w Sure Grip
Borla Stainless Steel Headers - IAT Adjuster
Flowmaster Force II Cat Back - Ported TB/Custom Cold Air intake
H&K USC Security System
Coming Soon - head porting/ install HO cams & valve springs

jennyen
Dodge Dakota
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7/29/2002
13:37:50

RE: vapor lock?
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Thanks for the reply. It is not the gas, as I have had this problem with gas direct from my regular Conoco place as usual. Replaced the pick-up sensor and am waiting for the results. A computer test showed it had failed several times. Sometimes it starts right back up, sometimes it takes an hopur of cool down. Does it matter that I cannot smell gas? It is not flooding, which I think is odd....



Bob W
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7/29/2002
21:32:09

RE: vapor lock?
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Check the frekin IGNITION SYSTEM dont worry about how it smells just look for a strong spark next time it stops.


Gibson headers, Gibson Cat-back, Edelbrock IAS shocks, K & N drop in, 180 stat, Jet stage II chip, ARE Lid

Bob W
GenIII
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7/29/2002
21:34:41

RE: vapor lock?
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Muzzy's right check the codes first then the spark.

Gibson headers, Gibson Cat-back, Edelbrock IAS shocks, K & N drop in, 180 stat, Jet stage II chip, ARE Lid

jennyen
Dodge Dakota
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7/31/2002
14:07:42

RE: vapor lock?
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wel well well, it wasn't the frekin ignition, it was the pickup sensor. Thanx anyway



Bob W
GenIII
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7/31/2002
21:00:34

RE: vapor lock?
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Cool glad you got it fixed.
what does the frekin pickup sensor, sense.
hehe

Gibson headers, Gibson Cat-back, Edelbrock IAS shocks, K & N drop in, 180 stat, Jet stage II chip, ARE Lid

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