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2lt EFI no acceleration

Changed Injection pump, checked for vacuum leaks, all is good. Turbo light on dash also is good but does not light up. Looking for suggestions. Engine appears to govern out at about 1600 RPM

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

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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.

Posted on Feb 28, 2009

countrysi248
  • 443 Answers

SOURCE: rough idle, backfire on acceleration

check everything you can under the hood your air intake system all of it especially make sure all clamps are tight .. and make sure all vacuum hoses are good and not cracking or broken or just loose . you might run a little fuel cleaner through a tank of gas too cleaning the engine fuel system up some. just a few ideas.. Jerry

Posted on Apr 12, 2009

  • 1 Answer

SOURCE: Toyota prado 2LTE EFI loosing speed uphill auto trans

cylinder head

Posted on Jul 17, 2009

  • 4088 Answers

SOURCE: my xj6 runs at high rpms and accelerates on its own

None of those possible problems have anything to do with idle speed. The first thing might be a very weak throttle return spring. The next would be a sticky throttle cable or foot feed pedal that isn't moving freely. Another possibility is a vacuum leak somewhere. Did changing the spark plug in #1 cylinder help the misfire? If not, you may have a partially plugged injector. Fixing the misfire will only increase idle speed some more. Look for an idle speed motor near the throttle body that is supposed to raise idle speed when the engine is cold and lower it back when the engine warms up. Check to see if it is holding the speed too high. If the throttle position sensor tells the computer where the idle speed motor is set, then it could have an effect on idle speed if the sensor is bad. The position sensor is just a fancy potentiometer. Hope some of this helps.

Posted on Aug 26, 2009

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roniecon
  • 6826 Answers

SOURCE: 1995 k2500 suburban idle too fast

replace the coolant temp sensor,it`s values are off,it is defective.Also if this does not work,witch I think It will,change the throttle position sensor.

Posted on Nov 15, 2009

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Idles erratically, just changed rocker cover? gasket .now it revs high, not sure why, can I fix this suzuki swift 1990


rocker cover, i edited it for you. (my guess high is over 800rpm)?
hot engine or cold engine or both?
if hot is water temp, 180F? or stuck at 149F"? too low...
are you in neutral or drive? or park.?
which engine?. is it there are many sizes used on Swifts,
one if the largest number of engines on car.
my guess is a "G" engine family.
High idle is usually a vacuum leak,
is this a CARB or EFI engine?, (TBI, throttle body injection:?)
if it is EFI and if TBI
any air leaks will cause too fast hot idle.
here is the list: EFI only ! electronic fuel injected.
  1. Vacuum leaks. (hose left off, or now cracked?)
  2. sticking ISC, idle controller.
  3. TPS set wrong, and no longer has a working idle switch.
  4. ECU in Limphome (if CEL lamp (dash) glows running , bingo)
  5. PVC hose fell off.. sucking in fresh air , and higher idle.
more if you have answers to what your engine and driveline
consist of.




here is the lineup
GEN2 Swifts (the G family used)
1.0 L G10 (LP2) I3
1.0 L G10T (LS3) turbo I3
1.3 L G13A/BA (L72) 8V I4
1.3 L G13B/G13K 16V DOHC I4
1.5 L G15A 16V I4
1.6 L G16 16V I4

Aug 07, 2015 | Suzuki Cars & Trucks

1 Answer

I have a service engine soon light on and have hooked up an OBD11 reader to it and got code P0410 pertaining to a secondary air injection problem. hoses are fine, pump is new.


P0410 Oldsmobile - Secondary Air Injection System Malfunction

Possible causes: - Faulty Vacuum hoses damaged
- Faulty Air Pump inoperative
- Air bypass solenoid harness is open or shorted
- Air bypass solenoid circuit poor electrical connection
- Air bypass solenoid leaking/blocked or stuck open/closed
- Air diverter valve leaking/blocked or stuck open/closed

Tech notes: Visually inspect AIR pump and AIR bypass valve harness and connector, if connector are OK, then replaced AIR bypass valve.

When is the code detected? The secondary air injection system does not detect the presence of air in the exhaust when introduced by the secondary air injection system.

Possible symptoms: - Engine Light ON (or Service Engine Soon Warning Light)
- Engine hesitation

P0410 Oldsmobile Description An air pump is used on the vehicle to lower tail pipe emissions on start-up. The Powertrain Control Module (PCM) grounds the Air pump relay control circuit which energizes the Air pump. The PCM also grounds the Air combination valve vacuum control solenoid circuit, which energizes the Air vacuum control solenoid. Vacuum is then applied to both Air combination valve diaphragms which opens the shut off valves. The PCM enables both circuits simultaneously when Air system operations id desired. When the AIR system is active, then Air pump forces fresh air into the exhaust stream in order to accelerate catalyst operation. The AIR combination valves replace the conventional check valves. When the AIR system is inactive the shut off valves prevent air flow in either direction.
P0410 Oldsmobile Secondary Air Injection System Malfunction

May 30, 2015 | 2001 Oldsmobile Intrigue

1 Answer

Hi Guys and girls Help!! My Accelerator stuck in limp mode. I have been to 6, yes 6 mechanics, and everyone says they cant work it out so please help. 1) Accelerator in Limp Mode 2) Battery light was on...


have the mechanics checked the egr valve and the vacuum lines and hoses. like vac leaks, n75 bad, vnt sticking, intake sooted, egr passing, and sooted up exhaust turbine. Bad Maf (Oxygen Sensor)
Leak in the vacuum system
Faulty N75
Bad actuator
Dirty gummed up turbo causing variable vanes to jam or stick

it can be any of above symtoms. hope this steers you in the right way. have a good day !!

Mar 11, 2011 | 2000 Audi A4

1 Answer

2003 VW Passat wagon 1.8 turbo, the check engine lite came on and the code is po411. how to fix without spending money I don't have


This code indicates that you have a faulty secondary air injection system. Basically this is a system in which pumped air is allowed into the exhaust system to help burn off any residual fuel droplets when the engine is warming up and thereby reduce hydrocarbon emissions. The 'injection of air' (opening of the valve) is by vacuum supplied by a thermally resistant over-braided vacuum line. Find your combi 'air injection' valve on the exhaust manifold and then check the integrity of the length of over-braided vacuum line. There is a good chance that the fault is merely a leak in this line (a poor end fitting) and this in turn is failing to supply the necessary vacuum to open the valve to allow pumped air into the exhaust. Hope this helps point you in the right direction.

Jan 01, 2011 | 2003 Volkswagen Passat

1 Answer

My car not work well and the speed take time to accesslration < when i stopped the engining off


Check under the hood, you might have a vaccum leak somewhere. vehicles with electronic fuel injection, connect a pressure gauge to the fuel rail to see if there is any pressure in the line. No pressure when the key is on? Check for a failed fuel pump, pump relay, fuse or wiring problem. Lack of fuel can also be caused by obstructions in the fuel line or pickup sock inside the tank. And don't forget to check the fuel gauge. It is amazing how many no starts are caused by an empty fuel tank. There is also the possibility that the fuel in the tank may be heavily contaminated with water or overloaded with alcohol. If the tank was just filled, might be causing the problem. On EFI-equipped engines, fuel pressure in the line does not necessarily mean the fuel is being injected into the engine. Listen for clicking or buzzing that would indicate the injectors are working. Some EFI-systems rely on input from the camshaft position sensor to generate the injector pulses. Loss of this signal could prevent the system from functioning. Even if there is fuel and it is being delivered to the engine, a massive vacuum leak could be preventing the engine from lower acceleration starting. A large enough vacuum leak will lean out the air/fuel ratio to such an extent that the mixture won't ignite. An EGR valve that is stuck wide open, a disconnected PCV hose, loose vacuum hose for the power brake booster, or similar leak could be the culprit. Check all vacuum connections and listen for unusual sucking noises while cranking. And you may check your fuel filter it may have some clog... best of luck.

Sep 21, 2010 | 1996 Ford Taurus

1 Answer

Audi missing at idle, engine smoke, and vacuum leak


audi oil leaks are usually valve cover gaskets. oil run off causes smoke on exhaust downpipes.while vacuum hoses do tend to dry rot with time it may also be the secondary air injection pump (if cold ) or waste gate for turbo.try to use a long hose,put one end on your ear use the other to locate sound. extending mirror and light may help too. missing at idle could mean time for tune up or coil pack failing. good luck

Mar 23, 2010 | 2004 Audi A4

1 Answer

Ford transit t350 loss of acceleration


have you tried bypassing the turbo to check if the turbo is helping? is the pump calibrated well? check all the hoses from the turbo especially the turbo boost compensator hose that goes to the injection pump or something like it

Aug 18, 2009 | 2000 Ford F350 Super Duty Super Cab

5 Answers

1986 chevrolet silverado truck engine hesitates when accelarating


if theres a sensation of bucking this is a transmission selonoid 15 to 30 part only automatics has this
now if theres trouble accelerating theres a couple things to look at
fuel filter fuel pump sending unit
clog in fuel injectors or vacume leaks start with break booster most of time this would be it

Nov 16, 2008 | 1999 Chevrolet Silverado 1500

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