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1993 Chevrolet Silverado Chevy

Tiny
SEAN030888
  • MEMBER
  • 1993 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 525 MILES
Hi on my 1993 Chevy Silverado I had a code. It was code 22 which is the throttle position sensor. I replaced that. The problem I was having was the truck would act like it was shutting off but it didn't. When I hit the gas pedal it would not raise the rpms almost like it wasn't getting gas. When I put the part in today it was running a lot better. But the code is still their. The book says check the tps check the Ecm connector then it says replace the tps. I did not check the ecm connector. Is there a way to get this code out of the system.
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Wednesday, September 16th, 2015 AT 4:41 PM

12 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
First if you didn't clear computer after part replacement the code will still be there so pull ecm fuse for 30 seconds with key on. Try that first if it 's still on. Code 22 mean the circuit is grounded so check for a wire rubbing against block.
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Thursday, September 17th, 2015 AT 6:13 AM
Tiny
SEAN030888
  • MEMBER
  • 36 POSTS
Ok I did that no codes now. Thanks for the help.
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Thursday, September 17th, 2015 AT 6:31 AM
Tiny
SEAN030888
  • MEMBER
  • 36 POSTS
Ok I ran it yesterday it did great on the interstate. When I got off and reduced to lower speeds it was hesitating. When I hit the gas a little to get into another lane the rpms would not raise. Almost like a fuel problem. I have no codes. It use to dye before I put the new throttle position sensor on. It doesn't do that now. It just hesitates.
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Friday, September 18th, 2015 AT 6:57 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check for a blown gasket under the tbi unit usually at rear or front use choke cleaner if rpm changes replace it
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Friday, September 18th, 2015 AT 8:09 AM
Tiny
SEAN030888
  • MEMBER
  • 36 POSTS
Hey I did that no change I took it out today this time it died on me again. I put it in neutral and restarted it. It fired off and died again. Did it 2 more same problem. Both times. I let it sit a minute fired it up again it ran fine. Drove 5 more minutes cut out on me again. Restarted it 3 times died 3 times. Let it sit 2 minutes fired off and I got it home. I have it parked because I am afraid of driving it. I am suspicious of the fuel pump now. When it happens you smell a burning smell like something is burning plastic. My gas gauge doesn't work either. I just had this pump replaced 6 months ago. I don't have the special fitting to check the fuel pressure since this truck doesn't have a port to test at. I am going to take it to my buddy at his shop Monday and see what he thinks. What is your opinion. Could it be the fuel pump or something else. Thanks for all the help.
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Friday, September 18th, 2015 AT 12:02 PM
Tiny
SEAN030888
  • MEMBER
  • 36 POSTS
The gas gauge went out about 2 months ago and the people that did the pump swears it is the cluster that's bad.
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Friday, September 18th, 2015 AT 12:07 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If there is no blinking light using a test light at gauge then it's the cluster which are digital and very well could be. It does sound like maybe a fuel problem with your truck or maybe contacts at injectors not making good contact
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Friday, September 18th, 2015 AT 12:24 PM
Tiny
SEAN030888
  • MEMBER
  • 36 POSTS
Ok so I had my buddy help me out he is a mechanic. He cleaned the grounds that did not solve it. We replaced the distributor cap and rotor. The cap was corroded. That didn't make a difference either. We put a new fuel pump relay on. That did not work. The injectors in the throttle body was not spraying like it should. We put a new throttle body on ran great. It turned out that didn't work. He said he has never seen a truck do this before. It only stalls while you drive it and it gets warm. It won't do it just sitting in park. Any suggestions. I was thinking the fuel pump or Ecm but I don't know. The fuel pump was replaced in March. Thanks.
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Monday, September 28th, 2015 AT 12:00 PM
Tiny
SEAN030888
  • MEMBER
  • 36 POSTS
This is a brand new motor. It only has about 700 miles on it
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Monday, September 28th, 2015 AT 12:01 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Have your buddy check it
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Monday, September 28th, 2015 AT 12:07 PM
Tiny
SEAN030888
  • MEMBER
  • 36 POSTS
Yeah I may take it to a shop now he lives in a different state so I am going to take it where hehe use to work. Hopefully they can figure it out. Thanks.
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Monday, September 28th, 2015 AT 12:39 PM
Tiny
SEAN030888
  • MEMBER
  • 36 POSTS
Hey just to update you I took it to advance auto. My dad was thinking alternator. He called it they tested it the diode in the alternator was open I put a new one on ran for an hour with no problems.
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Wednesday, September 30th, 2015 AT 3:51 PM

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