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cold outside now car wont start

cold outside now

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#1 mars88star

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Posted 03 November 2019 - 09:51 AM

i have a 1988 starion  car starts great when the engine is cold,but now if I drive the car turn it off wait about 10 mins,i go to try and start the car and just cranks excessively then will start did not do this when it was warm outside.....also car is having idle issues anyone experience this before



I have tried....both coolant temp sensors.....had injectors tested and cleaned.....02 sensor.....maf sensor.....still having same issue





any feed back would be greatly appreciated.....thank you





#2 tsi_tom

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Posted 03 November 2019 - 12:59 PM

Fuel pump or the pickup coil in the distributor is what I would look at next.
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#3 mikec

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Posted 03 November 2019 - 06:48 PM

Watch the tachometer while starting - both when the car starts normally and when it won't start.  Normally you can see it wiggle just above 0 RPMs while cranking if the ignition is trying to function.

Usually a StarQuest that has issues re-starting 10 to 30 minutes after shutdown is suffering from flooding: a leaking injector (or two) or a leaking fuel pressure regulator lets gas dribble into the intake manifold which floods the engine.  Give it enough time to evaporate and the car starts again.  Some time when you can drive the car and then park it in your garage/work area do the following:
1: loosen the clamps that hold the over-the-valve-cover pipe (OVCP) to the throttle body inlet and those that hold it to the valve cover.  Go for a putt-putt drive (no boost pressure) long enough that you know it'll argue about starting.  Park it.
2: quickly remove the OVCP and stuff paper towels in there.
3: unplug the "L" shaped vac hose from the fuel pressure regulator (the small beer-keg shaped thing at the top/front of the throttle body) from the throttle body.  Put a paper towel under the end of that hose.
4: Wait a while...  then see if either paper towel is wet with gas.  If either has ANY gas, you've got fuel leaks.

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#4 mars88star

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Posted 03 November 2019 - 07:16 PM

mikec….thats what i thought also makes sense what your saying that's why I sent the injectors out to have them tested cleaned and new seals.....im going to try the regulator like you said....but it only does it when its cold outside.. took the car out today it was about 60 degrees out....drove 20 miles shut car off waited about 30-40 mins and car started and ran fine

#5 mars88star

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Posted 03 November 2019 - 07:20 PM

car is running a fairly new bosch fuel pump....I can hear it running sounds  healthy and strong

#6 markhansenconquest

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Posted 03 November 2019 - 07:29 PM

do u have new filters ??

#7 mars88star

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Posted 03 November 2019 - 10:06 PM

all filters have been replaced recently.....newer k&n air filter and brand new fuel filter

#8 Ressurect1on

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Posted 10 November 2019 - 04:50 PM

I believe one temp sensor is just for the gauge the other is for the CPU, and if I recall correctly, they both have the same plug in.. try swapping the plugins and see if you didn't maybe get the sensors mixed up.

other then that, if it's a flooding issue, if you WOT and start it, does it start easier?

#9 mars88star

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Posted 11 November 2019 - 07:48 PM

i believe these cars have 3 cts ….mine has 2 of them that are 2 wire and one that is 1 wire...I thought the 1 wire was for the gauge...I replaced both 2 wire sensors but not the 1 wire sensor.... runs a little better but still idles low at times

#10 croquest87

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Posted 11 November 2019 - 08:27 PM

Auto or manual?   One sensor pointing straight up is for the ECU  this needs to be in range. Many aftermarket sensors are not. OEM sensor=best results to eliminate that. Idle control nose switch should be cleaned and IAC TPS reset performed.  Also any vacum leaks that are present will effect your idle.  Electronics like your fan  ac on and such will drop your idle if your nose switch is not compensating for the load.
Sounds like your car gets flooded  due to leaking injector or temperature sensor out of range/wiring from that gage (ECU not getting correct info  and thinks car is cold (adding to much extra fuel) to the hot engine flooding it. Next time it wont start  floor your gas pedal while starting to clear fuel.  Hope this makes sense.

Edited by croquest87, 11 November 2019 - 08:42 PM.


#11 mars88star

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Posted 11 November 2019 - 09:03 PM

yeah I will have to check




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