Question about 1990 Acura Integra

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I have a 1990 Acura integra rs ....I changed the fuel pump, fuel filter, main relay, and fuel pressure regulator and my car still won't start.

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  • Acura Master
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Get a noid lite and check to see if computer is pulsing injectors

Posted on Apr 16, 2015

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Posted on Jan 02, 2017

YellowNo5
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SOURCE: acura integra rs no spark no fuel pressure

Could be the main relay. It's behind the dash up above your gas pedal. Look for a gray and brownish box with one large plug in it. Should be easy to find since you don't have cruise control. It will be secured with one 10mm. You can bring it into reach with it still plugged in. Try starting it while tapping on the little plastic box. If it starts, pry off the cover with a flat head screwdriver and re-solder the broken connections. The break in the solder will be on the side with the sharp little things. It will be smaller than a hair. To find it you will need to wiggle it. Have plenty of light. Just hold the soldering tool on the broken one until the solder puddles around it and you're fixed.

Posted on Apr 29, 2010

swc6912
  • 62 Answers

SOURCE: I have a 1990 Acura integra rs. I changed the fuel pump,fuel relay,and fuel filter. It started when I sprayed gas into the injectors, but it won't start on its own. What else can I do?

Along the firewall there is a pressure test point (looks like a tire valve) push the valve in to see if there is fuel and pressure.

I'm guessing there is NOT if you can spray fuel and start.

If there is you may want to get a pressure gauge and make sure the pressure is high enough.

If NOT, you need to chase back why you don't have pressure.
is there power to the relay ?
Is the relay switching ?
Is there power to the pump ?

Posted on Apr 14, 2015

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2 Answers

I have a 1990 Acura integra rs. I changed the fuel pump, filter, pressure regulator and main relay and it still doesn't start. It cranks but won't turnover.


Have you checked fuel pressure between tank and intake? pressure check valve on return line could be stuck open. check for spark as well, need more info....

Apr 16, 2015 | 1990 Acura Integra

1 Answer

I have a 1990 Acura integra rs. I changed the fuel pump,fuel relay,and fuel filter. It started when I sprayed gas into the injectors, but it won't start on its own. What else can I do?


Along the firewall there is a pressure test point (looks like a tire valve) push the valve in to see if there is fuel and pressure.

I'm guessing there is NOT if you can spray fuel and start.

If there is you may want to get a pressure gauge and make sure the pressure is high enough.

If NOT, you need to chase back why you don't have pressure.
is there power to the relay ?
Is the relay switching ?
Is there power to the pump ?

Apr 14, 2015 | 1990 Acura Integra

1 Answer

1994 integra rs won't start


check your computer or the ignator or coil in the dizzy

Nov 12, 2011 | 1994 Acura Integra

1 Answer

My 1990 integrea wont start but and I have replaced the starter and main relay in it what else should I look at


Check to see if your plugs are getting fire, if not check the ignition module and crankshaft sensor. Check your fuel pressure, if no fuel could be bad pump, if not enought could be fuel pressure regulator. Hope this helps.

Jun 08, 2011 | 1990 Acura Integra Hatchback

1 Answer

Acura integra rs no spark no fuel pressure


Could be the main relay. It's behind the dash up above your gas pedal. Look for a gray and brownish box with one large plug in it. Should be easy to find since you don't have cruise control. It will be secured with one 10mm. You can bring it into reach with it still plugged in. Try starting it while tapping on the little plastic box. If it starts, pry off the cover with a flat head screwdriver and re-solder the broken connections. The break in the solder will be on the side with the sharp little things. It will be smaller than a hair. To find it you will need to wiggle it. Have plenty of light. Just hold the soldering tool on the broken one until the solder puddles around it and you're fixed.

Mar 30, 2010 | 1991 Acura Integra Hatchback

1 Answer

My 1990 acura integra wants to start but won't turn over. A couple of times it has started then dies. I'd keep trying to start it until it finally turns over and starts without dying. Could the fuel filter...


It's hard to know whether or not this is a fuel issue or a spark issue. Here is where I'd start:

Have a mechanic check your fuel pressure to make sure you're getting fuel. An intermittent starting issue could point to a clogged fuel filter. This would be more likely than the pump.

With the age of the car, a faulty main relay could also be the culprit. They are notoriously bad on Acuras of that age. The solder joints break and they will work one minute and not allow the car to start the next. (starter will turn the engine over but not "catch")

If this problem happens more often when the weather is hot or cold, it points toward the main relay. Good luck.


Oct 22, 2009 | 1990 Acura Integra Hatchback

1 Answer

My car starts and runs then it wont go anymore and eventually stalls out. i changed the fuel pump all the fuel pump wires,the spark plugs ,the distributo ignitor,and the main relay. my teacher says drain...


I think it's possible that the fuel regulator is stuck open and allowing the fuel to return to the gas tank. If your car is like mine (1991 Acura 1.8 engine), you can try this experiment: Pull the vacuum line off the fuel regulator (it's on the end of the fuel injector manifold and a hose connects to it to return gas back to the gas tank) and temporary plug the hose with a small bolt or golf tee. If the regulator is not stuck open it will make the fuel injector manifold at the highest pressure. Start the car and see if it dies or keeps running ok. If it runs ok then the vacuum control is not working right. If this doesn't help, try changing the fuel regulator valve or pull it out and test it with a vacuum off and on. When the vacuum pressure is present to the valve the valve is suppose to open slightly, this allows fuel to bypass the fuel rail and return to the tank.

Sep 25, 2009 | 1991 Acura Integra Hatchback

2 Answers

Acura integra 1990 turns over fine but doesnt start


for you to check if it is the fuel pump, see if there is fuel running out of the hose if you remove the fuel filter. Another is to directly connect the pump to the battery. If the pump works that way, then it could be a efi relay issue which is found underneath the dash or a wiring issue.

Jul 10, 2009 | 1990 Acura Integra Hatchback

1 Answer

Car wont start 1990 acura integra LS


try the distributor I had the same problem with mine a couple weeks back

Mar 22, 2009 | 1990 Acura Integra Hatchback

1 Answer

1990 acura integra ls wont start


bros. check the main fuel pupm relay

Jan 11, 2009 | 1990 Acura Integra Hatchback

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