Question about 1990 Cadillac SeVille

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Fuel injector fuse (7.5amp) blows when gas pedal is pushed to floor. 4 injectors stop working until fuse is replaced.

Car starts, idles evenly and drives fine until accelerator is pushed to floor.

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6ya6ya
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Posted on Jan 02, 2017

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alicantecoli
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SOURCE: 2002 Cadillac Escalade Starts, runs for short while then dies?

new pump by the sound of it

Posted on Jan 18, 2009

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cadman000
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SOURCE: Cars runs but not getting ehhnough gas to accerlerate properly

check for a clogged catalytic convertor ( car usually sounds like a vacuum cleaner when you are accelerating )

Posted on Mar 25, 2009

  • 1 Answer

SOURCE: Car has very ruff idle in park and drive&cuts out while driving

I had a similar problem in my grand prix i did some research and found out a couple different things that it could be... it could either be a bad fuel pump, a bad resitor, or a bad connection in the wires on the fuse box. My problem was solved simply by taking out the fuse box and checking the wire that came from the fuel system. It turned ot that it was just a bad connection. 

Posted on Apr 09, 2009

  • 105 Answers

SOURCE: po 307 misfire on #7

just because injector test ok electricly that doesnt mean its working right if the tip is plugged instead of sprayying a fine ignitable mist of gas it just drips out if this happens the gas wont ignite and you get a wet plug. you can switch injectors from one cylinder to anther or you can just replace #7 let me know how you make out with this

Posted on May 29, 2009

AskJack
  • 117 Answers

SOURCE: 1991 cadillac deville 4.9 fuel trouble

You just need to go through a simple Idle Relearn Process.

The Idle Speed Control motor will cause the accelerator pedal to tap and the car will surge back and forth, actually acting like there is a lack of power during intial startup.


Whenever a battery is changed, went dead or the ECM computer is replaced.

In order to make the engine run normal again, you need to take the car through a relearn process. Otherwise the idle could be very slow or have a 30mph idle.

To enable it to relearn, here's what to do.

1) Disconnect the battery cable for 15 minutes, before hooking it back up.

2) (KOEO) Turn the Key On with Engine Off, just so the electronics are on, but without starting the engine and turn the climate control panel to off.

3) Push the off and warmer buttons on the climate control panel at the same time and hold for up to 5 seconds for the computer to go into diagnostics.

On the fuel panel screen it will display 888 then E52 and then 70.

When it gets to 7.0 shut off the key for 1 minute.

4) Repeat step 3, two more times.

5) Start the engine without pushing on the accelerator pedal and let it run for 18 minutes with the climate control panel off.

6) After 18 minutes put your foot on the brake and shift into drive and wait 1 minute.

7) Then turn on the a/c by pushing the auto button. It needs to be warmer than 60 degrees F so the compressor can engage. Wait 1 more minute.

8) Put the shifter back in park and turn the key off.

9) Wait 1 minute

10) Idle relearn is now complete and the engine should start and run correctly.


Posted on Sep 16, 2009

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1 Answer

My sub impreza 1995 wont start sometimes ive been told cold start valve?


Have you had it hooked up to a scan tool ? check sensor data ! Your vehicle has no cold start valve . Black smoke out the back indicates a rich condition , holding gas pedal to the floor causes the engine computer to go into WOT mode shutting off the injectors . Suggest you do injector leak down test , leaking fuel injectors ! Ever replace fuel injectors ?

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2004 GMC YUKON DENALI idling rough and trouble starting


unless you want to blow up the intake stop giving it gas before you turn it over what you are doing is dangerous all you are doing is dumping raw unburned gas into the bottom of the intake to the motor, one of these times you go to start it it will do this boom really loud then die, it will lift the whole back end of the vehicle off the ground, then if you try to start it again okay I edited the answer also could be your catalytic convertor plugged is the exhaust coming out good, change the sensors whatever you do stop pumping the gas if it wont start now get in as you need silence so shut the door and the radio off can you hear the fuel pump? it will sound like a huum for a few seconds if you cant there is your problem all I can say is stop pumping the gas as that's why its running bad you are burning out the sensors and all the computer code stuff and wasting expensive gas too. you prolly fouled your plugs as well.

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When hot will randomly not start unless gas pedal is pressed all the way down. on a 2001 honda crv. replaced fule pump,fuel relay,fuel filter, dist. cap, rotor, coil,plugs, wires, and ignition control


If you hold the pedal to the floor it puts the fuel system into Clear Flood Mode. This prevents the injectors from firing and lets the already present fuel burn out. Now if this has to be done on every short trip you probably have a leaking injector.

Does the vehicle seem to crank slowly or stop and then crank when this happens?

Mar 23, 2014 | 2001 Honda CR-V

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1997 ford contour


hold pedal to floor and it tries to start ! Not sure if your vehicle has clear flood mode , Most vehicle have clear flood mode strategy programmed in the ECU , PCM ,ECM .when you hold the accelerator pedal to the floor the engine computer cuts down on the injector on time to clear a flooded engine .
Fuel pressure regulator problem ,maybe ! You say there was a blown fuel pump fuse an you replaced it ? Fuse's don't blow for no reason ? Fuel pump bad , short , too much current !
Disconnect the mass air flow sensor an see if it starts !

Apr 24, 2017 | Cars & Trucks

1 Answer

Why a have push the gas pedal to start if I don't


YOU NEED A TUNE UP.REPLACE SPARK PLUGS AND WIRES, REPLACE AIR FILTER AND FUEL FILTER,CLEAN FUEL INJECTORS USE CAN OF SEAFOAM POUR IN FUEL TANK.FUEL TANK CAN HAVE 3/4 TO FULL TANK OF GAS.SEAFOAM WILL FLUSH OUT CARBON ON TIPS OF FUEL INJECTORS SO THEY CAN SPRAY WIDE NORMAL SPRAY.

Aug 21, 2011 | 1999 Oldsmobile Alero

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I have a 1999 Saturn 4 cyl. The engine idles around 1200rpm. Even during normal driving the engine still idles high even after warm up. Sometimes the engine won't start after it has sat for 15 minutes or...


leaking o-rings at the fuel injectors would explain the hard starting when warm-when you hold the petal to the floor, it shuts off the injectors, which will make it possible to start it after the injectors leak down on shutdown. O-rings are easy to replace, just disconnect the battery and pull the injectors straight up to remove, get the old rings out and install the new ones, light lubricate the base of the injectors and pop them back in.

that might explain the high idle too, although usually the idle is not consistent when the injectors are leaking at idle-idle is rough. I would make sure the engine coolant temperature sensor is new (they are very important on saturn, the original one is plastic and they are known to crack easily-the replacement should be brass)-also, check the Idle air controller, best to remove the throttle body (4 bolts) and remove the IAC and clean it thoroughly, being careful not to get the top half wet-sensitive electronics. Clean the post that the IAC goes into, and clean the throttle body (both sides) while you have it out.

Feb 21, 2011 | 1999 Saturn SL

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1991 1500 4x4 5.7 liter suburban. Will start and then die, like its not getting gas. Fuel pump has been checked, gas pressure regulator has been replaced, shop said hose from fuel tank to fuel pump had...


Yes, there is a Fuel Pump Relay. The Relay is located on the firewall just above the left-hand (even cyclinders) valve cover as viewed from the front of the car. There is also fuel pump test lead attached to the harness at the fuel pump relay. Attach a power wire from the battery to the lead and the fuel pump should come on. If fuel pump comes on, the relay could be bad. Also check the fuel filter located under the passenger side of the truck tucked into the frame rail.

Feb 19, 2011 | 1991 Chevrolet Suburban

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Runs rough at start up,then runs okay, Hesitiates momentarily when moving from a stopped position. Occasionally wont start and runs rough, then runs okay. This problem is intermittent


you have a bad injector, if you have A... as it states on the top of the motor 2.8, 3.1 L MULTI PORT and dies or idles really rough and the exhaust smells like strong gas. most likely you have an injector that has shorted or is shorting out and from my experiences usually after a road trip or using fuel injector cleaner or buying a used car. it will cause half the motor to not run or run poorly VERY POORLY or even burn out 1 injector fuse out of 2 under hard acceleration or idles but as soon as you touch the gas pedal dies. but only if it is a MULTI PORT fuel injected motor. ive heard you want to try and replace them with bosch injectors out of a 2.9l ford bronco/ranger. only attempt if you got the mechanical know how sometimes if not done right will leak gas because of the injectors being kinda different length. research before attempting.

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1 Answer

Car turns over great will not start


IT DEFFO SOUNDS LIKE LACK OF FUEL, BUT FOR IT NOT TO RUN AT ALL UNLESS THROTTLE IS FULLY OPEN DOESN'T SOUND LIKE AN INJECTOR, MORE LIKE NO FUEL AT ALL, LIKE THE PUMP IS KNACKERED. PULL OUT AN INJECTOR, PUT IT IN A GLASS JAR, THEN TRY AND START IT, IT SHOULD GIVE A BIG POWERFUL SQUIRT OF FUEL, TRY ALL THE INJECTORS ONE AT A TIME, BECAUSE ITS QUITE RARE FOR ALL THE INJECTORS TO GO AT TE SAME TIME

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