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Chevy S10/GMC S15-Sonoma: Problems & Solutions
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Not water in the air filter. The secondary air pump, which supplies air to the catalytic converter, tends to pull in water from road splash. The replacement pump has a redesigned air intake to prevent the problem.
If the converter has been damaged, it's factory warrantied for 8 years/80,000 miles.
This is not alternator whine, but full fledged interference. It only occurs on the AM band, not on FM or when listening to CD's. This interference only occurs while the car is running. Not only does the truck's installed radio receive this interference, but a portable radio I brought into the cab also has the same problem. I moved the portable radio around the car and under the hood to see where the most noise is coming from and it seems to be centered in the distributor/engine block area. My question to everyone is what would be causing this, and what would be a solution? The engine itself runs great, so I am hesitant to mess around with it too much. Would a full tune-up/wire & spark plug replacement remedy the situation? Has anyone else had this problem? Thanks in advance for your help.
Vehicle Level Powertrain Management Computers and Control Systems Testing and Inspection
Testing and Inspection Procedures Trouble Code Diagnostic Charts P Code Charts P0410
Notes
CIRCUIT DESCRIPTION
An Secondary Air Injection (AIR) pump is used on this vehicle to lower tail pipe
emissions on start-up. The Powertrain Control Module (PCM ) supplies a ground to the
AIR pump relay, which energizes the AIR pump and the AIR solenoid valve. Engine
vacuum is applied to the AIR shut-off valve when the AIR solenoid is energized. The
engine vacuum opens the AIR shut-off valve which allows AIR to flow to the
exhaust manifolds
2001 Chevy Truck S10/T10 P/U 4WD V6-4.3L VIN W
Emissions - MIL Lamp ON/DTC P0410 Set
Bulletin No.: 04-06-04-015
Date: March 22, 2004
TECHNICAL
Subject:
Check Engine Light On, DTC P0410 Set (Replace AIR Pump, Install New Hose Assembly)
Models:
1999-2003 Chevrolet Blazer, S10
1999-2001 GMC Jimmy
1999-2003 GMC Sonoma
1999-2001 Oldsmobile Bravada
with 2.2L or 4.3L Engine (VINs 4, H, 5, W - RPOs LN2, L43, L35)
Condition
Some owners may comment on the check engine light being illuminated. Upon investigation, the technician may find a DTC P0410 indicating that there is a concern in the secondary air injection system.
Cause
Water may have collected in the AIR pump or the vent solenoid and frozen or corroded the pump.
Correction
Replace the AIR pump and install a new inlet hose and solenoid tube assembly using the following procedure:
1. Prep vehicle.
2. Raise vehicle on hoist.
3. Remove shield covering AIR pump.
4. Remove hose and vacuum lines from pump and solenoid.
5. Remove AIR pump inlet hose. Do not re-use.
6. Disconnect electrical connectors from pump and solenoid.
7. Remove pump mounting bolts and pump.
8. Transfer isolators from the old pump to the new pump.
9. Install new AIR pump and bolts to vehicle. Tighten the bolts to 17 N.m (12.5 lb ft)
10. Route new hose assembly up between engine and fender. It should come up near the area between the battery and the coolant bottle.
11. Connect new inlet hose to pump inlet.
12. Connect old outlet hose to pump outlet.
13. Connect electrical connector to pump.
14. Connect electrical connector for solenoid to connector on the new hose assembly.
15. Connect the hose with the white nipple to the vacuum source hose.
16. Connect the remaining hose to the shut off valve.
17. Install shield covering AIR pump.
18. Lower vehicle.
19. Remove coolant reservoir nut nearest the battery.
20. Route new hose assembly between the battery and the coolant reservoir with the solenoid on top.
21. Install the solenoid bracket onto the coolant reservoir stud and reinstall the nut back into the vehicle.
22. Use a wire tie to keep the new hose assembly away from the engine. On four cylinder engines, tie to the AIR outlet hose. On six cylinder engines, tie to an available hole in the radiator fan shroud.
Two Thoughts ...
1.) Do you have an exterior Antenna? The Antenna needs a good ground at the bottom of the antenna to the body - As the vehicle is older, it may be loose, rusted, etc. I'd buy a new antenna , install it ensuring the inside/underside of the mounting hole is good an clean.
2.) Most radios "used to " have a "tuning" adjustment for AM. They used to be in the back - or perhaps if you pull off one of the knobs you will see a "pot" to turn. - check your manual. This adjustment helps with antenna impedenct matching between the radio and the Antenna ....
Good Luck !!
highway at 60mph with no a/c. I have a 2000 Sonoma 2.2L with auto trans.
I know it should get far better mileage; I had previously owned a '96 S10 2.2L and got over 27mpg with it!
I noticed that the other two problems like mine received no replies so, I might be wasting my time! Engine runs strong, no hesitation, etc. and truck has less than 63,000 miles...I bought it just 2 weeks ago and my mechanic is scratching his head.
What should I be looking for? Dealers just scratch their caps and shake their heads. What's wrong? Doe anyone have a suggestion where to begin looking?
lower levers have snapped off, the metal they used for attachment looks
like pretty cheap pot metal! any suggestions on repairing this or re-fabricating
would be appreciated. thankyou!
wire problem, pick up some resister plugs and get a good set of plug wires
and that should alieviate the problem.
sensor, good luck!
code # I pulled but ended up replacing throttle position sensor, which seems to
be a common problem on the 2.2L. the real weird thing is that I had a converter
problem also( sounds like we are in same boat, or atleast were)...good luck!
One way to be sure is under the hood is the emissions decal, all the emissions installed are listed there, take a look, you really got my curiosity up.
When I start my truck, if I drive right away without giving a 2 min. warm up time, at the first stop when I push in the clutch, the engine will surge out of control up and down. Eventually it will start to calm down and when the idle has reached the lowest point, it is good to drive again and wont happen until the next day.
I can avoid the problem by letting it warm up and idle down to the lowest point before driving. The problem is much worse in the winter with cooler temps.
Any info on this would be greatly appreciated.
Regards,
Vernon
I took my truck to a mechanic and they tested some things with engine scanner. One problem they found was that when you accelerate, the engine timing was retarding instead of advancing. The shop told me I should replace the ignition module in the distributor which I did. This seemed to help a little but the problem still exists. I have replaced all of the standard maintenance parts (plugs, cap, rotor, wires, 02 sensor) and the catalytic converter only has 20K miles on it.
Does anyone have any suggestions on any other items to replace? Why would the AC cause my truck to make this problem worse? I would appreciate any suggestions. Thanks.
like spitting, sputtering at take off or not, but I have a 2000 s10 2.2L, and
had to replace mine for that reason......good luck
dealer part.
they go into code history on their code reader. the computer does save the code even though ses goes out. the problem is most likely your tps(throttle position
sensor) common on these vehicles. good luck
on my 2000 they do). And most of the time they are set by the manufacture
( voltage) but if not you need a volt ohm meter and you'll need to know voltage
range for your truck( you may need to go online to get) most of the tps's have
a little room for adjustment, but I would just replace it with the new one incase
the old one starts acting up again, I found it very imbarrassing and a real pain in
the -ss! good luck hope this helped