Question about 2002 Chevrolet Suburban 2500

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When starting the engine in cold weather the engine will race, then when I kick the gas it will barely idle. It acts just like it has a stuck choke. What could be the problem?

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  • Chevrolet Master
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If your throttle linkage isn't sticking, you probably have a faulty idle control valve or sensor.

Posted on Oct 07, 2009

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2 Answers

In cold weather, my car is slow to start and has stalled a few times. What should I check?


You don't say what make of car but it's about the same for all. Your problem is the choke adjustment. The choke raises the idle when the car is cold and after warm up drops to normal. You are doing the chokes job when you hold the pedal down, once its warmed up the choke no longer functions till cold again. So check the choke and the high idle speed adjustment. Simple fix. Hope this helps mike

Nov 20, 2014 | 1997 Toyota Corolla

1 Answer

Gas pedal gets stuck and keeps the car going cant stop without turning the car off


dont drive it. find the cause and fix it now.
Hot and cold engine or BOTH>?
1995 Tracker, no tranny , no 4wd , on engine options stated.
Exact high RPM in neutral, not stated...... 1500 is normal cold.
keeps going in Neutral. (nah , you have 5 ways to stop any car.
key, hand brake, foot brake and neutral. and with 4wd, 1 more neutral.
keep that in mind driving any car.
this car has up to 3 throttle cables that can stick. and more!

1: floor mats hit the pedal>? ala. Toyota style (lawsuits)
2: the three cables are, throttle. , cruise and A/T transmission kick down cable. if car is M/T and no cruise it has 1 cable.
so disconnect it, throttle fixed? (disconn,. 1 by 1, bingo?

no cure?, then its not the pedal , you meant just high idle.
yes, replace the cable or bad parts three.
ok say its not the cables.. (tests proved that)
the 95 came with 2 engines, 8valves and 16valves,
they work differently (8v love so race, 16v loves to stall)

1: ISC Stuck open, common.
2: 8v, any air leaks at all , will cause super high idle speeds.
3: throttle valve in the throttle body is stuckopen (gunk) or the return spring broken (very very rare the latter,in fact never heard of one breaking)
4: IAC (thermal idle control stuck open ,(my 97 was). and lots more.
5: on the 16v it takes 2 failures. to make high idle.
gross rich running engine (cold engine its normal) and any air leak
once hot the engine can not race unless there is huge overfueling
and an air leak.
6: the 8v has this device on the side of the throttle body.
called a dash pot. its just a fast idle vacuum servo.
if stuck open the engine will scream full time....
7: ECU stuck in limphome, can cause too high idle speeds.

we need to know which engine
http://www.fixkick.com/find-parts.html
8v or 16v first.
then does the idle race hot or cold or both (engine temperatures)
if it races , then how fast?, RPM the dash tachometer tells you that.

it can be as simple as a 50cent hose cracked.
to a dead ISC. (idle speed control) IAC is thermal idle air controller.
the IAC must be closed on a hot engine,
if the the engine never gets hot,it will scream full time.

Feb 13, 2014 | 1995 Geo Tracker

2 Answers

When the engine starts it goes to 2000 RPM immediately


first thing clean throttle body,good clean.Maybe TPS sensor or IAM.

Apr 01, 2013 | 1999 Jeep Wrangler

2 Answers

On cold starts, engine knocks for about 1-2 min then runs fine. When i took it in for service they raised my idle and when i start it in cold weather the idle speeds up kinda high for 1-2 min. Car runs...


my 1990 mazda 323 was doing that for the past couple months every now and again, then after my car sat for about a week to get repaired for another problem, the head gasket completely blew, it knocks very rough and loud, and smoke comes out of my engine.
some advice? get rid of it, head's are not cheap fixes

Feb 24, 2011 | 1988 Mazda 323 Hatchback

2 Answers

Sometimes to start you have to give it a lot of


Hi
This sounds like a cold start system fault, which is a number of things.
  1. Cold start temperature sensor not operating correctly so the cold start system won't work when the engine is cold.
  2. The idle needs to be set to the correct RPM of the engine when warm, if it is idling ok when it is warm then this wont be the problem.
  3. Spark Plugs are worn and need replacing.
Most case's its the cold start system not operating correctly and if you have a good workshop to take it too they should pick this up quite quickly. Hope this helps, let me know how you get on.

Apr 03, 2010 | 1996 Toyota Corolla

2 Answers

2001 Dodge Caravan SE 2.4L.. In cold Weather it starts then stalls and dies...?


cable is fine,can be the tps but try tapping on the idle air valve and see if the idle kicks up,it works like a choke and if its stuck its a big vac leak

Nov 05, 2008 | 1990 Dodge Caravan

1 Answer

Engine idles high when first started after tune up and takes long for kick down


Hi edsan 58,

Most gas injected engines run at a higher speed when started from cold....It's the cold start application working....As long as the idle speed returns to normal within a minute or two....longer when the weather is colder.....nothing to worry about

Regards Johngee10

Sep 06, 2008 | 1999 Chevrolet Express

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