My Chevy Silverado won't go over 25 miles an hour

Rbaum
0

Asked by Rbaum Sep 19, 2012 at 08:58 PM about the 2005 Chevrolet Silverado 1500 Ext Cab 4WD

Question type: Maintenance & Repair

20 Answers

Tom Demyan
87,455

It might be a clogged Catalytic converter. Have a muffler shop diagnose it for you. Has your truck been hesitating and misfiring lately?

John Saffrahn
15,335

And pushing on the gas harder only makes it worse? Do you know how to remove oxygen sensors? If so then remove the 2 closest to the engine, they are almost touching the manifold. If that helps then there is a blockage in the exhaust. Most likely a bad catalytic converter or a bent pipe. If the converter is bad make sure its replaced with a proper OBD 2 cat, otherwise you will be going through this in 6-18 months from now.

2 out of 2 people think this is helpful.
John Saffrahn
15,335

I'm not trying to repeat what Tom said. His response wasn't even there until the page refreshed when I hit post. lol

1 out of 1 people think this is helpful.
Rbaum
0

I just had the catalytic converter replaced. I will take it back in. Thanks

Rbaum
0

Thanks a million for your feedback fellas have a great day just got the muffler worked on something, defenatly could be a area to look

John Saffrahn
15,335

I'll bet a generic cat got put on the vehicle. I have seen it many many times where people take a car to a discount muffler shop and the reason for the discount is cheap incorrect parts. I'm certain Tom is no stranger to seeing that happen either. The correct cat for that vehicle will probably run anywhere from $120-$160 maybe more. That's the shops cost so you can expect them to raise that price just to make some cash too.

Andrew Olsen
5,875

Is the truck just bogging down? or not shifting? Misfireing?

1 out of 1 people think this is helpful.
You think this is helpful.
Rucko
2,445

try changing the fuel filter.

Rbaum
0

I bought the CAT conv myself at the auto parts store and I gave it to them to install. The truck didn't elcelerate over 25 miles an hour when I pushed the pedal down. I just had the oil changed but I can look at the fuel filter to make sure it was actually changed and was a good filter. Today I didn't have any problems with it. It comes and goes. I did have a day where it didn't shift right away, it hesitated and wouldn't excelerate over 25 miles and hour. I shut off the vehicle sat and waited a while and then when I restarted it then it worked again. Thanks so much for your information!

John Saffrahn
15,335

The engine would shut off due to a clogged fuel filter not hit 25 MPH and just stop accelerating. With the info you have given I'm still leaning 100% towards what tom and I said. Unscrew the H20 sensors next time it does it.

1 out of 1 people think this is helpful.
Rbaum
0

Ok great! Thanks fellas. I appreciate your time.

trip65
Not Active

john i've already had this problem before drove for over 5 miles at 30 mph. and thats all it would go, changed the filter and it ran great .

John Saffrahn
15,335

So your saying that your car was running great one day and over night the fuel filter on a fuel injected car got clogged to where the engine would stay running even when the gas pedal was to the floor but it wouldn't go over 30 MPH?

1 out of 1 people think this is helpful.
trip65
Not Active

no it wasnt my car it was a rental.. we used to pick up trucks and small vans for service . this one van would go more than 25 -30 tops. after changing the filter it ran fine .

John Saffrahn
15,335

It doesn't do that over the coarse of 24hrs the cat however gets a little too hot and can almost instantly melt blocking all the little honey combs preventing the truck from exhaling. That can happen between stop lights.

Maleik
0

my volvo s70 it have bad haed gazkit after changed to new one the car run smouth in idle but wont go more 25 mi in hour

Joshua Stone
70

I have a chevy 1500 truck it goes into drive and over drive but when going down the road it only goes up to thirty then truck wont go after that until you come to a stop then take of againe it wont go over thirty what could couse that

7 out of 7 people think this is helpful.
John Saffrahn
15,335

Maleik did you ever get that Volvo running? Could be your rockers weren't adjusted properly... Josh does the truck act like it's in neutral or does the engine rpm not climb anymore? Could be a transmission issue or could be a clogged cat. more info

1 out of 1 people think this is helpful.
jonrod
0

Mine does the same thing and it takes a while for the gears to change after I shifted. I was going up a hill and tried to give it gas but it stayed on 25. My cab was empty. Was not carrying anything.

JohnRC
0

Would the same situation apply with a 6.6 Duramax diesel??

Your Answer

Related Questions

Silverado 1500
Looking for a Used Silverado 1500 in your area?
CarGurus has 172,218 nationwide Silverado 1500 listings starting at $950.
ZIP:

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 tenspeed
tenspeed
Reputation 440
#2 califcarson
califcarson
Reputation 380
#2 Andrew Olsen
Andrew Olsen
Reputation 380
View All

Related Models For Sale

Used GMC Sierra 1500"
755 Great Deals out of 60,330 listings starting at $1,995
Used Ford F-150"
2,228 Great Deals out of 183,861 listings starting at $1,000
Used Dodge Ram Pickup 1500"
799 Great Deals out of 15,836 listings starting at $1,800
Used Chevrolet Silverado 2500HD"
434 Great Deals out of 38,710 listings starting at $2,999
Used Toyota Tundra"
442 Great Deals out of 25,422 listings starting at $2,995
Used Toyota Tacoma"
430 Great Deals out of 18,310 listings starting at $1,895
Used Chevrolet Tahoe"
1,007 Great Deals out of 32,003 listings starting at $1,795
Used Chevrolet Silverado 1500 SS"
6 Great Deals out of 104 listings starting at $8,325
Used Chevrolet Silverado 1500HD"
21 Great Deals out of 301 listings starting at $4,000
Used Chevrolet Silverado 2500"
13 Great Deals out of 378 listings starting at $4,000
Used Jeep Wrangler"
797 Great Deals out of 42,282 listings starting at $1,800
Used Chevrolet Colorado"
225 Great Deals out of 3,544 listings starting at $2,995
Used Chevrolet Avalanche"
328 Great Deals out of 6,024 listings starting at $3,987

Used Cars For Sale

2014 Chevrolet Silverado 1500 For Sale
185 Great Deals out of 132,565 listings starting at $19,485
2013 Chevrolet Silverado 1500 For Sale
284 Great Deals out of 6,374 listings starting at $14,988
2012 Chevrolet Silverado 1500 For Sale
223 Great Deals out of 5,360 listings starting at $8,495
2011 Chevrolet Silverado 1500 For Sale
256 Great Deals out of 7,067 listings starting at $8,995