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Don Hancock Posted on Sep 19, 2017

440 with a 513 flat tappet cam,,800 cfm edelbrock,,MSD ignition system,all new ,,engine starts fine ,idles fine ,,will not rpm past 3000to

5 Related Answers

Gary

  • 111 Answers
  • Posted on Sep 30, 2008

SOURCE: Cold Start Idle Issue

Problem might be the air control valve, it's located at the right side rear of intake manifold and has a hose going to the air intake duct from the air cleaner, as a test you might try pinching off that hose when the idle is a problem.

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Anonymous

  • 84 Answers
  • Posted on Dec 24, 2008

SOURCE: 1999 passat tdi power fault

Air mass sensor, almost never shows codes but always makes the vehicle loose power !! cheaper from vw than pattern and more reliable

Anonymous

  • 2 Answers
  • Posted on Feb 28, 2009

SOURCE: engine stalls after cold start-up & release from high speed idle

I had a similar problem.  I found the filter cartridge below the pcv valve had carboned up, and after the crank case pressurized, oil was forced out the pcv supply line to the throttle body.  The idle air control valve solenoid got oil in it and caused my problem, but only when it was cold.  The pcv cartridge is accessed by removing the pcv valve and the rubber fitting that the pcv valve mounts in.  It can then be fished out with a pick set, and it is a pain because you can't see it, but you can get you hand back there.  I hope this helps you.

Anonymous

  • 1 Answer
  • Posted on Mar 09, 2009

SOURCE: 2001 v6 escape rough idle when cold

To update my earlier repair on the 2001 6 cyl Escape: When cold, and when the ignition was turned over but no accelerator pressure given, the rough idle finally returned the P0303 code again when the check engine light came on indicating that it wasn't caused by the plugs or the coil. FYI, I had replaced the intake manifold gaskets during the original repair and just prior to that I had replaced the fuel filter which was very dirty (I cut it open to see).

The repair manual referred to fuel injectors as a possible problem. I have run three tanks of fuel using different injector cleaning products and am very pleased with the results. Cold starts are much smoother and I am unable to coax out the P0303 code or any other code.

My opinion, change the fuel filter, use a fuel injector cleaner for a couple of tanks, change the plugs if the problem still exists. The coils were not the problem on my vehicle.

cansmo

Reynaldo Andico

  • 2431 Answers
  • Posted on Mar 05, 2012

SOURCE: idel problem on 5.7 1995 silverado

You engine is TBI, It uses a MAP sensor check the vacuum line for crack and make sure yo have a good seal, The distributor also check and make sure the pick up does not have corrosion which causes the relutor to stick. As for the EGR it would cause a misfire, and yes the do fail. I am sticking with the IAC as a problem its a stepper motor and has a high failure rate, chack also the ECT (engine coolant temp sensor) for corrosion that gives false reading.

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1answer

When i removed the valve lifters they go mix up.will that hurt anything if I put them in the wrong order?

Depends on if you have a roller cam or a flat tappet cam. If you have roller lifters, you should be fine. If it is flat tappet, you might as well purchase a new cam and lifters.
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I just had a motor put in and my a t temp light is flashing from the moment gee started the car ...doesnt appear to be shifting and kicks hard in first ...rmp run over 3 all the time ..changed filter and...

new subaru enigne. NO YEAR stated !!!!!!

the cold start RPM is wrong.
its NOT THE ENGINE. !!!
the engine controls are out of control.
vacuum air leaks are the reason.
or stuck open ISC /iAC air valve .
or throttle cable set too tight,
of the many. i can find it in 5min flat hands on.
but telling how to find air leaks is a 20 page doc.
you contradicted , idles find then 3000 rpm idle.
which is it.?

that tacho meter is x1000
so 3 x 1000 is 3000 RPM.. all cars
and is 2 times the legal idle.
and 3 times hot. 800 is normal hot
0.8 on the dial zero point eight. = 800

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1answer

High rpm when warming - choke problem?

It is a little high but if the ambient temperature is very low it would be ok providing you understand that there will be a bit less economy. You can fine tune the choke to drop another notch on the accelerator cam so that it would idle at say 1500rpm and the gear engagement would be less harsh
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2answers

Toyota Rav 4 1997 .Check engine comes on .Codes are P0301,302,303,304116 . What to do.

The engine coolant temperature is high. Your other Codes are for missing cylinders on cylinder 1,2,3,and 4. Get the Codes cleared and start over. Changing the plugs and wires,etc could have generated the missing cylinder Codes.

Autozone,Advance, and Oreilys will scan for free.

Check your engine for an IDLE SPEED CONTROL SOLENOID, which may be in the intake. Or a fuel pressure regulator.

A lot of times people work on the spark side and forget the fuel injectors. They can cause a miss.
2helpful
3answers

IT IS MISSING iVE REPLACED THE PLUGS

Misfiring Escort...
THE Guide!
1- check HT leads, including the main lead from the coil. pull one off at a time and see if there is any difference in engine noise, if a lead makes no difference to the engine note when you pull it off it is broken and you need a new lead for that plug - best to replace a full set since the others will be on their way out too. try each plug and check the leads like this with the engine running, 2- clean/repace distributor cap and rotor arm if it is dirty or corroded, there are 2 Clips, one on either side of the distributor cap, pull em off, take the distributor cap off, look inside the cap, there are 4 pins, are they all corroded and covered in white stuff?, they should be shiny brass, clean them up with fine wet and dry sandpaper, make them flat and shiny again. also still on the distributor is the rotor arm, pull it off, it may need a bit of wiggling - clean this up the same with the wet and dry, get a very fine grade of wet and dry sandpaper since you want the metal to be as smooth as possible afterwards, once the cap and rotor both have shiny metal clean them with mild detergent, rinse and dry them fully, not only to clean them of dirt and grime but also the metal filings from the sanding are "bad" for the distributor.. once dried refit the rotor arm (it only goes on one way, do not force it) refit the distributor cap, make sure its the right way round (make a note of its position BEFORE you remove it) 3- check if air filter is blocked and replace it if it is very dirty - if you think it is blocked try running the engine without the filter and see if it runs better, you know for sure you have a bad filter if this is the case. 4- check fuel filter (especially on 1.0 and 1.3 engines) for blockage and fuel line for blockage (replacement costs £3.50-£5 or so)
apart from that its "experience required" jobs like setting the ignition timing - just get a normal tune up after you've checked out the leads and dizzy/rotor arm which is quite cheap on an escort, you only turn the dizzy and move 1 screw...
Just for reference in case i have misjudged you're ability and you want to try tune it yourself... 1989 MK4 Ford Escort ;-D you didn't give CC so you'll get all engine data for 1989! (petrol)
NOTE: the CVH engines have hydraulic tappets so no adjustment is possible and no data is given. ---------------------------------------------
Escort 1.3 "HCS" 1988-1990 1297cc Valve tappet clearances - Inlet --- 0.20mm - Exhaust 0.32mm Firing order 1-2-4-3 Idle speed - 700-800RPM -
750RPM is optimal idle but anything between 700-800RMP is acceptable.
Ignition Timing- 15 Degrees before top dead center at idle RPM
Spark Plugs : Motorcraft - AGRF22 Champion - RS9YC Spark Plug Gap - 1.00mm (check it is right or it will misfire...)
---------------------------------------------------------------------
Escort 1.4 (1392cc) "CVH" - 1986-1990
Firing Order 1-3-4-2 Idle speed 750-850RPM, 800 being optimum _____ NOTE: This engine requires premium fuel (97 Ron) or it will run poorly - damage may result from using low grade fuel. ----------------------------
Ignition Timing - 12 degrees BTDC at idle RPM. Spark plugs - Motorcraft - AGPR22C Champion - RC7YC Spark plug gap 0.75mm (check this)

----------------------------------------------------------
Escort 1.4i Catalyst - 1.4 "CVH" 1392cc 1989-1990
Idle RPM 850-950RPM 900RPM Being optimum :This engine needs only regular unledad 95RON
Ignition timing - 8 to 12 degrees BTDC 10 degrees being optimum Spark PLugs - Motorcraft - AGPR22C1 Champion - RC7YC
---------------------------------------------------------------------------
Ford Escort 1.6 "CVH" 1596CC
Firing order 1-3-4-2 Idle speed - 750-850RPM - 800 being optimal Ignition Timing - 12 degrees BTDC at 800 RPM Spark Plugs - Motorcraft - AGPR22C Champion - RC7YC Spark Plug Gap - 0.75mm (check it!)
NOTE :This engine will run on regular fuel (95 RON) but the timing should be set to 8 Degrees BTDC at idle RPM for this fuel.
------------------------------------------------------------
FORD ESCORT 1.1 - 1989-1990 - 1118cc "HCS"
Firing order 1-2-4-3
Idle speed - 700-800RPM 750 Being optimal
This engine runs on regular or premium fuel without adjustment
Ignition Timing - 10 degrees BTDC
Spark Plugs - Motorcraft - AGRF22C1 Champion - RS9YC Spark Plug Gap 1.00mm (check this!)
-------------------------------------
So check your spark plug gaps with feeler guages if you don't have a feeler guage they're less than a fiver at a cheap motor shop - even pound shop and market stalls sometimes have them.
Apart from that lot - these cars can run bad if the battery is weak, they chug like hell on a half charged or failing battery, so make sure the battery is strong too...
The carburettor jets could be clogged or worn... Inlet manifold could be leaking?
Check the low tension wiring (the wiring on the ignition coil, the two round plugs that puch onto the coil) one red and one green/black/stripey/somethin - trace these two wires around the engine bay and check them for damage and loose connections.
Thats all I can think of right now tell me how you get on, I KNOW these cars... I'll go step by step if you need help checking everything/replacing whats wrong,
------------------------------
Good luck.
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1answer

2000 Chevy s10 2.2L very rough idle at low rpm

run a fuel pressure test, if that checks out fine it may be a faulty coil pack or ignition control module
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2answers

Flatlining at 3000 RPM

maybe the cam timing is off. If the engine was torn down and reassembled wrong, that would do it. Connect a vacuum gauge to the intake manifold and see what you get for vacuum readings.
It should be about 17 inches at idle. And, it should be steady.

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  1. NORMAL READING: Needle between 51-74 kPa (15-22 in-Hg) and holding steady.
  1. NORMAL READING DURING RAPID ACCELERATION AND DECELERATION: When engine is rapidly accelerated (dotted needle), needle will drop to a low (not to zero) reading. When throttle is suddenly released, the needle will snap back up to a higher than normal figure.
  1. NORMAL FOR HIGH-LIFT CAMSHAFT WITH LARGE OVERLAP: Needle will register as low as 51 kPa (15 in-Hg) but will be relatively steady. Some oscillation is normal.
  1. WORN RINGS OR DILUTED OIL: When engine is accelerated (dotted needle), needle drops to 0 kPa (0 in-Hg). Upon deceleration, needle runs slightly above 74 kPa (22 in-Hg).
  1. STICKING VALVES: When the needle (dotted) remains steady at a normal vacuum but occasionally flicks (sharp, fast movement) down and back about 13 kPa (4 in-Hg), one or more valves may be sticking.
  1. BURNED OR WARPED VALVES: A regular, evenly-spaced, downscale flicking of the needle indicates one or more burned or warped valves. Insufficient hydraulic valve tappet clearance will also cause this reaction.
  1. POOR VALVE SEATING: A small but regular downscale flicking can mean one or more valves are not seating.
  1. WORN VALVE GUIDES: When the needle oscillates (swings back and forth) over about a 13 kPa (4 in-Hg) range at idle speed the valve guides could be worn. As engine speed increases, needle will become steady if guides are responsible.
  1. WEAK VALVE SPRINGS: When the needle oscillation becomes more violent as engine rpm is increased, weak valve springs (6513) are indicated. The reading at idle could be relatively steady.
  1. LATE VALVE TIMING: A steady but low reading could be caused by late valve timing.
  1. IGNITION TIMING RETARDING: Retarded ignition timing will produce a steady but somewhat low reading.
  1. INSUFFICIENT SPARK PLUG GAP: When spark plugs (12405) are gapped too close, a regular, small pulsation of the needle can occur.
  1. INTAKE LEAK: A low, steady reading which can be caused by an intake manifold or throttle body gasket leak.
  1. BLOWN HEAD GASKET: A regular drop of fair magnitude can be caused by a blown head gasket (6051) or warped cylinder head-to-cylinder block surface.
  1. RESTRICTED EXHAUST SYSTEM: When the engine is first started and is idled, the reading may be normal but as the engine rpm is increased, the back pressure caused by a clogged muffler, kinked tailpipe or other concerns, will cause the needle to slowly drop to 0 kPa (0 in-Hg). The needle then may slowly rise. Excessive exhaust clogging will cause the needle to drop to a low point even if the engine is only idling.
    When vacuum leaks are indicated, search out and correct the cause. Excess air leaking into the system will upset the fuel mixture and cause concerns such as rough idle, missing on acceleration or burned valves. If the leak exists in an accessory unit such as the power brake booster (2005), the unit will not function correctly. ALWAYS FIX VACUUM LEAKS.
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66' 289 4v mustang

pull number 1 up go from there see which way rotor button is pointing match wires according
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