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Ca1997 caraven when cold engine runs good until it's warm then it s like it;s floods out when you hit the gas.

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Possible bad coolant temp sensr or oxygen sensor

Posted on Nov 16, 2008

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Will not start when engine is warm sounds like it is flooded cold engine OK


Bad coolant temp sensor--makes ECU think engine is still cold so sends too long injector pulse flooding engine. Very common, and easy fix.

Apr 02, 2016 | Cars & Trucks

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Carbeurator problems


Cold starting problems from a carbureted engine? Bet if you get your choke adjusted right, it will solve it. If you can screech the tires, this Tercel may be worth saving!
Just get a mechanic friend or pay someone to fix the choke. Doesn't take a long time if you know how. If you've never adjusted or worked on one, it's not so fun. Hard to explain too. The choke plate or flap should be almost closed completely when starting. Soon as engine is cranked or running, the plate should open a small amount more, but still nearly closed. Then as engine warms, the plate should gradually open until it is completely open after about 5-10 minutes. The choke cuts off the air supply to the engine. A cold engine needs a richer gas mixture to run good, and most importantly to start easy.

Nov 07, 2013 | 1988 Toyota Tercel 2 Door

1 Answer

My car starts fine when engine is warm. I turn it off then try starting it again. then starts up and shuts back off. does it like 3 times in a row. then I wait a few minutes then it starts up when I push...


stalls, are complex
if the engine is good (compression at spec)
it this list.
1: lost electric power to EFI system or spark.
2: bad fuel.
3: bad spark.
4: bad fueling. (too much or too little.
5: EGR stuck open
6: ISC dead. or IAC dead. (idle air valves failing cold)

there are tests for each.
cold start failure only ! all else good, engine tuneup done?
1: ECT fibbing like oh'bummer. (signals water temps of alaska in Panama? "floods, and your right foot helps./..........
2: IAC (cold start fast idle air valve bad) same for right foot....
3: check engine light on running? is it?

ECT can cause gross over fueling.
the IAC dead will cause gross under AIR which in fact causes flooding (less air plus same fuel = flood)
bad fuel.


Oct 12, 2013 | 1999 Honda Accord

1 Answer

I have a problem with my 1988 Buick Century, 2.5L 4 cyl engine. I think it has to do with maybe the MAP sensor. Problem: when it's really cold outside, I can not get the engine to start unless I floor...


a bad thermostat-testit--have car scanned for bad codes--giv it a tuneup-new plug wires and distributer cap--then throttle body and idle air cleanin--get a haynes book at parts place

Apr 01, 2011 | 1988 Buick Century

2 Answers

Won't start when cold


hello wyatt...... Is your jag.built with a carburetor or fuel injected?
Carb, your choke is not set to close when cold, and should be set. When set, it also sets a cam that keeps the engine running fast. Then when warm, you hit the pedal and the cam moves, and the engine speed goes to normal. Unless the choke is set, the engine cannot keep running, as it tries to run on cold gas and it can't run good on cold gas. It needs more gas, therefore, and the choke makes more gas go into the engine.

Fuel Injected, the computer should adjust the amount of gas your car is getting when cold. If not, the coolant sensor might be bad.
The coolant sensor senses the cold engine and tells the computer to add more gas. Once the engine is warm, the coolant sensor tells the computer to put the gas to normal.
So, if the sensor is not working, the engine will try to run normal, and if cold, it can't. Joe Thanks for choosing Fixya!

Dec 24, 2010 | 1985 Jaguar XJ6

3 Answers

97 Saturn sl2. Won't start after it gets warm. If you drive it for 15-20 minutes and try to restart it will not engage the starter. Wait a couple hours and it will start fine


It is your engine coolant temp sensor (ECTS). 99.9%. the saturn made them with a plastic tip, so they crack over time. A replacement should be about 15 bucks and not too hard to replace. You'll notice your engine temp gauge not working (always cold).

I don't know much about cars, but here's what happens. When your car is cold, the fuel runs rich. Your broken sensor is always reading that the engine is cold, but when it is warm, it runs too rich and floods your engine, not allowing it to start. When your engine is actually cold, everything is fine.

Mar 31, 2010 | 1997 Saturn SL

1 Answer

99explorer when cold out idles rough and smell gas like its flooding until it warms up have to keep foot on accelarater or it will die after it warms up good it runs fine doesnt do it in warm weather 4.0...


These Engines use a plastic intake manifold with rubber gaskets sealing them to the cylinder heads. The workshop I worked for had this problem & went through heaps of different scenarios to work it out. Turned out the intake manifold gasket had gone hard & was leaking until the heat of the engine had re-created the seal, which was taking anything from 30 seconds to a minute. It took heaps of testing to arrive at this conclusion & once the gasket had been replaced it was as good as new.

Dec 07, 2009 | 1999 Ford Explorer

1 Answer

454 ci gm turns over hard backfires timing ok acts flooded


Check fuel pressure, and regulator. A leaking regulator gives a warm engine more fuel [ it does not like it] a cold motor does. same as a flooded motor. Good luck

Mar 17, 2009 | 1999 GMC Suburban

1 Answer

When truck first warms up it bogg when i hit gas


dude seriously the oil is cold and cant circulate, all cars must warm up when their cold. if you dont let it warm up you could be damaging critical parts to your engine

Aug 25, 2008 | 1989 Jeep Cherokee

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