Question about 2003 Ford Windstar

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Check engine light on

Idle is surging

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  • 51 Answers

Bad fuel pressure regulator, stuck egr valve, throttle position sensor bad, take it to a auto zone and have them scan the codes for you.

Posted on Dec 08, 2008

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1 Answer

Why does my 93 acura legend surge when idleing and atstop signs?


Check your coolant level.
If your check engine light is on, pull codes.
Check vacuum lines.

Feb 27, 2015 | Acura Cars & Trucks

1 Answer

97 toyota surges at an idle


(which engine. ?????)_
as always check all fuses. and scan the ECU for DTCs. first.
there is no need to fix OBD2 cars like 1980 cars (hard rows to hoe)
it can be 2 problems this......
lets fix the easy one first. idle. (and hope for moving issues to fix for free) it idle car is parked, so is 100% safe tests. (not moving)

so it surges at idle.
questions.?
1: hot or cold or both.?
2: low extreme RPM and high at idle.

400 to 800 RPM? surge.
1000 to 2000. what? numbers tell the tale.

first off, idle is the last thing to work right on any engine.

there are many ways to find what is wrong.
fix idle surge way.
i make sure that the engine holds closed LOOP status.
hot idle, if not , i fix that first.
keep in mind if not in closes loop and lean
all lean engine surge and guess what the ISC will add to the surge
because idle is way too slow, so the ECU open the ISC wider
and wider and its still too slow, so the ECU resets the ISC
this cause a worst hunt (surge)
the ECU adjust spark time and the ISC to get 800 rpm. (spec. look up yours)
so say , i see closed loop failed, OBD2 scan page 1
i look at the O2 sensor an its stuck lean.
if stuck lean and it really is (o2 bad?) then its lean and it will surge
.
examples.
1: i find 02 sensor bad, (only effects idle and light steady cruise)
2: i find fuel pressure at 15PSI , hopeless low .
3: i find all injectors clogged. and lean.
4: with MAF EFI, ( i find maf reading too low, (dirty) causing lean.
5: if MAP car, i find the MAP stuck hard high vacuum causing lean.
not knowing what engine you have or the idle hot surge range,
i can not go farther.

the driving bog tells me,
1: scan the ecu ,get DTCs; do that first.
2: clean MAF if car has one, ask how..
3: check fuel pressure.


my guess is engine is lean. and starving for fuel all the time.
cept WOT.

MAF cars starve for fuel if there are any vacuum leaks.
MAP cars do opposite, they race fast with 100% full power.
MAF is air density EFI
MAP is speed density EFI.
apples and oranges diffr. so what engine.


Jan 07, 2014 | 1997 Toyota Tacoma

1 Answer

Engine surging idle


Check for a manifold vaccuum leak, or an opening between the MAF, (mass air flow sensor), and the throttle body. The easiest way to check is to spray lightly with aerosol carburetor cleaner and watch for engine to die or surge.

Oct 29, 2013 | Cars & Trucks

1 Answer

Battery installed backwards at store


I would have this checked out to make sure they did not damage the computer, the check engine light may have been due to battery disconnect , the idle problem may be due to the same reason, it may need to relearn idle and other sensor inputs that were lost due to battery removal and fuse popping, this should take a day or two of driving it.
if you are still having a problem after that then have it checked.

Jun 09, 2013 | Toyota Cars & Trucks

1 Answer

Idle surges 1996 Nissan Maxima from 800 to 1800 rpm


could be a dirty throttle body or the idle control motor

Mar 24, 2012 | 1996 Nissan Maxima

1 Answer

'98 S10 4 cyl. 5 speed: Sudden high idle, now surges.


Go to your local shucks or auto zone and they can check any codes behind your check engine light and it's free. It sounds like one of two things a O2 sensor or your mass airflow sensor but they will tell you for sure

Oct 02, 2009 | 1998 Chevrolet S-10 Pickup

1 Answer

2006 Taurus surges


Take your car into an Autozone. They do free engine diagnosis when the check engine light is on. They'll hook it up to a reader and it'll give them a code to cross reference. That'll at least let you know why your check engine light came on. I'm sure it has something to do with the surging as well. You'll at least have a better idea of where to begin looking.

Jun 01, 2009 | 2006 Ford Taurus

1 Answer

Engine surges at rpm over 1500


Look for a vacuum leak (lines and intake), Is the engine light on, were any codes present? A faulty EGR or IAC could cause the problem too. Check the throttle cable for any restrictions.

May 27, 2009 | 1996 Chevrolet Cavalier

1 Answer

Continuous cycling electrical system surge


check the alternator out put.it has to be.13.5 to14.5 at idle.your car probably idle rough because you disconnect the battery the computer trying to relean itself. it will effect the idle.

Apr 11, 2009 | 1991 Lincoln Continental

1 Answer

S10 blazer surges


might wanna check intake gasket for leaks on the high engine rev as for tranny might be in the comp

Dec 05, 2008 | 1994 Chevrolet S-10

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