Question about 1990 Chevrolet Suburban

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It falls om its face after putting load on it

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PULL DOWN FUEL FILTER AND SEE IF IT IS PLUGED SEE IF YOU CAN BLOW THOUGH IT WHEN YOU PULL IT DOWN

Posted on Oct 16, 2010

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Posted on Jan 02, 2017

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1991 Cutlas Calias with 110,000 miles on it. When it gets up to high rpm's it falls on its face. Sometimes it will stall. If you drive slow its ok. When you put it to the floor and heads up to high...


is your car still running on carburetor engine? if yes, have your carburetor cleaned. while cleaning, replace the secondary jet in your carb. the normal primary/secondary jet for a 1.6cc engine is 105/135.

Aug 05, 2011 | 1991 Oldsmobile Cutlass Calais

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Parasitic draw on battery how to check on car with all those electronics still live with ignition key out of ignition lock


You will be able to help diagnose the problem by pulling fuses. Take a volt meter and put it to oms. Disconnect the positive battery cable. Put one end on the positive battery termanal and the other on the cable. Note the oms. Now, pull one fuze at a time until the oms drop considerably lower than before you pulled the fuzes. Thats the system that is drawing the power. Once you know the system you can track it down further. It could also be your altrenator. Disconnect it too and measure the oms before and after. take your time and do one system at a time noting the oms before and the oms after. My quickest guess it it is either your altrenator or your radio. Please note, you will have some "draw" no matter what because your clock radio or door lights will draw power. If you want to see this, test the oms with the doors closed and then test with the door open. The oms number will be higher with the door open.

If you don't have a volt meter, you can always test one fuze at a time over night. That would take considerably longer tho.

Dec 07, 2010 | 1994 Lexus LS 400

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Plymoth colt vista good fuel


If fuel pressure does not increase when under load the fuel pressure regulator is bad (leaking).

Jul 27, 2010 | 1993 Plymouth Colt Vista

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Motor stalls when put into gear, also acts like its out of fuel, or no fire to the coil. sometimes it wont even start, but if it does.. as soon as you put into gear it falls on its face.


This is usually the I.A.C. valve (Idle Air Control Valve), which is located on the throttle body on the intake. It controls the amount of air being pulled into the throttle body and when it has the wrong air/fuel mixture, it can cause it to run rough or even die when any kind of load gets put on the engine. It will also do this when turning on the A/C and etc. It may be called something else on a Dakota, but they both serve the same purpose. Hope this helps some. Good luck!

Mar 14, 2010 | 1995 Dodge Dakota

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88 dodge shadow idles very ruff. pedal to floor to start.


i have an 88 dodge shadow turbo with a five speed. the car will fall on its face at 5500rpm coming out of first gear. and its rpm range gets lover with each gear. the fuel pressure rises when it fall on its face. the car never dies just falls then picks back up and will fall again unless you keep it under the that rpm. then it is fine. what could be the problem?

Jul 17, 2009 | 1988 Dodge Shadow

1 Answer

2005 PT Cruiser 2.4


I think it sounds like your CAM sensor has fallen off or is faulty.

The computer controls the ignition timing and the injectors to squirt fuel in to the pistons at the right time. If the computer doesn't sense the cam angle correctly as you accellerate it can't put fuel into the pistons to match the opening and closing of the valves.

If you have a manual you can strip down the top of the engine to see the timing gears on the end of the Cam shaft and see if you can see the cam sensor and if there is anything obviously wrong (i.e. its missing) but you may be as well getting to the dealer to have it checked out and fixed. So the good Fuel pressure will not really effect the engine falling on its face as its a computer timing issue caused by bad sensor information that's causing the bad running.

Jul 02, 2008 | 2005 Chrysler PT Cruiser

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