Question about 1994 Chevrolet G20

1 Answer

Hard Start with trouble code 32

My 5.7 TBI engine cranks slow, like advanced timing, only when cold,, cranks normal after warm up. Engine check light has came on for a short time, then went out, but it set a code 32, what else can I check besides the EGR and vacuum lines.
Can this code 32 be related to the hard start condition ?? I don't have scan or test equipment, had to short the AB terminals to get the code, no other codes came up, just the 32. When cold, it barely cranks over, and then starts, after warm up it cranks normally and starts quickly,, fuel economy seems to be lower, and the engine pings slightly too, as if cheap gas, tried Chevron, Shell and Exxon, runs the same on all three.
Thank you,, Doug retired teacher

Posted by on

  • Kellyt1943 May 25, 2008

    Thanks for any suggestions

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 4 Answers

You should have your battery checked, it may be getting old and doesn;t have as much cold cranking power, I don;t think code 32 has anything to do with the slow cranking when cold.


Trouble Code 32 indicates that the Exhaust Gas Recirculation (EGR) valve diaphragm is not where the ECM expects it to be. The ECM controls the diaphragm with a Pulse-Width Modulated (PWM) waveform. The EGR has a vacuum bleed solenoid that adjusts the vacuum applied to the EGR valve based on this pulse width. If there is sufficient vacuum at the EGR valve, a switch closes to send a signal back to the ECM. The absence of this signal is the bases for code 32.
The conditions for setting this code are:

  • no vacuum to EGR (switch open), and
  • Code 33 or 34 (MAF error) is not present, and
  • engine running and LV8 is less than 100, and
  • coolant temperature is > 118 deg F (48 deg C), and
  • the EGR solenoid duty cycle is < 65%, and
  • the above conditions are met for more than 25 seconds


Typical causes for this code include:
1) Faulty EGR valve-to-ECM connection
2) Plugged EGR passages and/or sticking EGR valve
3) Defective EGR valve
4) Defective ECM

Posted on Jan 05, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Will not start cold without a lot of tries runs fine warm?


the first sidekick ever. 1989. (and tracker)
the first few were made in Iwata japan then at CAMI (canada) then on.
first off this year, came with 2 engines, 1.3L carb and 1.6L TBI EFI.
so what engine? we can NEVER guess and engine, blind.
The CEL if a CEL , and TBI 1.6L engine G16A
that lamp can glow for 2 reasons in 1989-95.
Check engine. function
and what we call the NAG lamp.
http://www.fixkick.com/CEL/NAG-Lamp.html
the nag switch is hidden in 3 locations in 7 year span.
its just to make folks angry.... (Hiroshima>? revenge?)
on this car, if it has a NAG it on the bottom kick panel
between your legs, (toes)
and can never be seen. only felt (lacking a mirror)
NAG = federal (usa) mileage warning see if leaded fuel messed up the CAT ,deal,, (totally useless now)
We remove them at the cluster 3 wire connector forever.
so if present slide the switch 1 time.
now the CEL lamp can flash out flash codes.
http://www.fixkick.com/CEL/CEL.html
hard cold starts, if CEL flashes 12s does it?
causes (top, not a guess) I do tests to find these but takes TOOLS.
  1. never tuned up with all new spark parts and filters.
  2. cam belt slipped. (60k part)
  3. engine is flooding, high fuel pressure, (too high)
  4. TBI injector o-ring leaking. flooding starts.
  5. ECT wires fell off.
  6. map hoses bad. or clogged end to end. from plenum to map sensor insides (nipple not clogged either)
  7. not melted cat, runs fine hot.
  8. not code 12s flashing (good) so what is it flashing. ?
  9. stuck open EGR main, (that can bounce closed as you crank long then be ok... for a while, many old EGR like to stick just as you stop car and shut down) can be felt by hand on any 8v engine easy. the diaphram ring can be exercised with fingers.
  10. IAC bad, stuck closed, preventing cold start air . and flooding.
  11. ISC valve same.
  12. Dash pot valve stuck retracted. (clod start vacuum start)
  13. spark timed wrong , see cam belt slip.

Nov 06, 2015 | 1989 Suzuki Sidekick

1 Answer

2007 Toyota Tacoma v6. Hard to start about 1 hour after initial cold start, longer cranking. Problem?


Is the check engine light on? How long has it been since the engine was tuned up? A worn plug that is "hot soaked" can create a longer cranking time. Hot soaked means it may have some un-burned fuel in the cylinder since the first cold start. A weak or worn plug has a harder time getting this fuel burned out of the cylinder when more fuel is being added during a warm start.

Feb 23, 2015 | 2007 Toyota Tacoma Regular

1 Answer

Car has trouble starting in warm weather


scan data if engine temp. is normal if ok see if there is engine faulty code.
hope it helps

Mar 20, 2014 | 1999 Pontiac Sunfire

1 Answer

My 350 tbi engine starts up, runs fine til it get warn, then it starts missing, chokes out etc.why?


probably Idle air control valve or EGR. under the dash there is a diagnostic port! with key off bridge terminal A & B turn key to on position (do not start) this will flash any trouble codes VIA the check engine light the first blink(s) are confirmation. then count blinks EXP,*** **= 32 , ***** ***= 53 , ** ********= 28... then just google GM OBD1 trouble codes and see what the problem is . 1_30_2013_3_58_06_am.jpg

Jan 30, 2013 | 1990 Chevrolet K1500

4 Answers

90 chevy 4/4 pu tbi 350 floods out


I'm having the same trouble with the flooding after warm start...if it's the temp sensor, would the temp gauge be working? It's in a 1991 Chevy van with an injected 350 carb.

Jul 08, 2010 | 1991 Chevrolet C1500

1 Answer

1994 dodge caravan check engine light comes on after engine warms up. Codes retrieved with check engine light, 12, 32 & 55


These are all the definitions for your codes.
It's hard to give an exact cause for these codes because of there are a number of different items that could cause these.
The first one could be caused by Incorrect camshaft timing,
VCT solenoid valve stuck open or continuous oil flow to piston chamber,
Camshaft advance mechanism binding, or faulty VCT unit,
The others are most likely bad sensors.
I wish I could be more help but it's difficult to trouble shoot this kind of problem without having the vehicle here in front of me.
Good luck

P0012 "A" Camshaft Position - Timing Over-Retarded (Bank 1)

P0032 HO2S Heater Control Circuit High (Bank 1 Sensor 1)
P0055 HO2S Heater Resistance (Bank 1, Sensor 3)


Sep 09, 2009 | 1994 Dodge Caravan

1 Answer

From cold start engine warms to quater temp then cuts out leave to cool then will restart and warm up to normal running temp and stays running well after that till next cold start any ideas? the car is a...


Does the Check Engine light come ON when this happens? Whenever the "Check Engine" light comes on, there is always a DTC (Diagnostic Trouble Code) stored in the ECM (Engine Control Module). You'll need an OBDII (On-Board-Diagnostics) scanner to retrieve any codes recorded/set in ECM. Otherwise, guesswork. I have MANY ideas that could send you on a wild goose chase. I strongly suspect EMS (Engine Management System) sensor beginning to malfunction as it warms up. First strong suspicion is the crank position sensor (CKP) - however,usually always sets a DTC (i.e., P0335, P0336). The next suspicion is the Engine Coolant Temperature sensor. The ECM uses this sensor's signal to adjust fuel, timing, engine RPM, etc based on engine temp. If malfunctioning at a particuar point during engine warm up, it could be telling the ECM the temperature is LOWER or HIGHER than it ACTUALLY is, resulting in the ECM to increase fuel (flood it) or give it LESS fuel (starve it). If this malfunction lasts long enough, the ECM will usually set a DTC for that sensor circuit, either a Range/Performance code, or a "LOW Input" or "HIGH Input" code.

May 09, 2009 | 2000 Hyundai Elantra

1 Answer

1999 chevy blazer has trouble starting from a cold crank


If your engine is cranking really strong make sure you have proper engine timing. If your engine is having a hard time cranking like its cranking really slow. You probably need to check your battery.

Apr 30, 2009 | 1999 Chevrolet Blazer

1 Answer

THE GLOW PLUG TURNS ON WENT ENGINE IS COLD


Yes it does. Let the glow plugs warm up for 7-10 seconds (the light on the panel should go off) and then crank the engine. If the weather is cold, half an hour of running does not warm up the engine completely so you need to use the plugs for the first few startups during a cold day.

Dec 17, 2008 | 1995 Mitsubishi Montero

Not finding what you are looking for?
Cars & Trucks Logo

715 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

71043 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6981 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...