1993 Ford Tempo IGNITION?

Tiny
PEBBLE0467
  • MEMBER
  • 1993 FORD TEMPO
Engine Mechanical problem
1993 Ford Tempo 4 cyl Front Wheel Drive Manual

Have a 93 ford tempo. After setting for 30 min. Or more wont start unless I take off hose from master air flow and put gas or starting fluid on rag and hold it there till it starts and is running then I quickly reattach hose. Will run like a dream. Will turn off and restart perfectly but after sitting for 30 or more min. Wont start. I have messed with key and a few times it has started but majority of time wont. Does this have anything to do with key lock cylinder or igintion switch or would this be a fuel pressure problem. Its like after sitting the pressure from the fuel pump has left and will not start. I was told by a backyard mechanic that it might be the ign. Switch not making contact for the secondary (or primary) system. I dont have money to replace good parts. Any help would be greatly appreciated.
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Monday, June 7th, 2010 AT 2:33 AM

4 Replies

Tiny
RASMATAZ
  • MEMBER
Could be the ignition switch or you're dropping fuel pressure quick due to injector and fuel pressure regualtor leaking to include the fuel pump check valve
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Monday, June 7th, 2010 AT 7:20 AM
Tiny
FIXITMR
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Turn key on and listen for hum of fuel pump. Then check for spark from coil while cranking. If both good then sounds like it's not getting proper mixture to start? Does the check engine light work? It should be lit up with key on and go out when car starts. What's the mileage on car? It rolls over at 99k so anything under 99k can mean add 100k or 200k etc. At least thats how it is for 92 or earlier models. Once started, how does the car drive? Does performance seem good?
Does the car have a MAF sensor? It and the MAP and temp sensor control the mixture along with the oxygen sensor. The MAP and temp have the greatest influence for starting. Try disconnecting the plug from the temp sensor. It should be located on top of housing where top radiator hose goes into cylinder head.
You also didn't mention when problem started? Was the car running/starting fine before then? And you dont need to do the rag thing just find a vacuum hose on intake (like brake booster feed) and remove to squirt some gas into manifold and replace. I use a large empty contact eye solution bottle cause it has a squirt tip.
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Monday, June 7th, 2010 AT 10:39 AM
Tiny
PEBBLE0467
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Thanks for your quick reply. I just got the car from my dad. He had just bought it about a month prior. It had been doing it since he got it. Once the car is started it runs perfectly. No missing no nothing. It has 80.000 miles on odometer so I am assuming + 100 to 200 thousand more. Engine is clean and runs excellent. Its just the starting after setting for a while. He did change the MAP. I do have a book on it but in the trouble shooting guide this is not a question or answer lol. I can go out all day long and start it every 15 minutes and it will start. But 30 min. It wont. Yep 93 has all sensors you mentioned, the MAF replaces the MAP sensor used on vehicles until 91. Im going to unplug the temp sensor see what happens. The check engine light does work. Was going off but did stay on this last time I drove car. 2 days ago. Could this be a fuse thing? Door seat belts dont work and heater/ac blower not working. I know sounds like a lot but for a me this car is a must to get in shape. I know its just minor things I need to fix all. Motor is excellent. Thanks again for the help and advice.
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Monday, June 7th, 2010 AT 12:37 PM
Tiny
FIXITMR
  • MEMBER
There is a small chance your car actually has 80k. You can do a search of tempo forum for each item you need fixed like blower and ac and seatbelts. In the past there have been detailed fixes posted. You didn't mention what kind of climate you are on for outside air temps. Did you check for pump noise and spark during this no start phase? You can remove coil wire from distributor and insert a spare spark plug and lay it on metal surface to test while cranking engine over. Just dont touch it while cranking.
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Tuesday, June 8th, 2010 AT 3:30 AM

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