Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Replaced oil pressure switch and fuel pump relay on my 1994…

Customer Question
Replaced oil pressure switch...

Replaced oil pressure switch and fuel pump relay on my 1994 silverado now fuel pump stays on after i turn truck off. what could be causing this to happen. thanks.

Mechanic's Assistant: How many miles are on the car? Has the car been starting normally?

290,000 miles. runs perfectly fine but check engine light will come on and cause it to run slow in one gear then stall out . put the old one back in and it runs for a while then does it again. but fuel pump stays off

Mechanic's Assistant: Are you fixing your Silverado yourself? What have you tried so far?

Yes i.m fixing myself. only replaced the two parts i mention. also the transmission does sometimes hang up at 2-3 shift

Submitted: 6 months ago.Category: Chevy
Show More
Show Less
Ask Your Own Chevy Question
Answered in 2 hours by:
1/2/2018
Chevy Mechanic: Reggie Whiddon,
 replied 6 months ago
Reggie Whiddon
Category: Chevy
Satisfied Customers: 168
Experience: Lead tech at river regions auto
Verified

Hi im Reggie thanks for using JustAnswer. Put my years of experience and training to work for you

You need to check the oil pressure switch you installed Ive seen the incorrect switch cause that. Also the relay you installed could be faulty and sticking on. If it wasnt doing it before you replaced those two parts odds are one of those parts is bad. I would go with the relay first.. Now what was the issue that caused you to install those two parts? You mention that sometimes the trans hang up at the 2 3 shift do you mean it starts off in that gear or does it start in 1 and 2 and then get hung and not shift to 3?

Ask Your Own Chevy Question
Customer reply replied 6 months ago
well the reason i replaced those parts in the first place was because oil gauge on the instrument panel would peg all the way pass 80 and would flicker erratically. It ran like that for well over a year with no problems but recently started to act weird and began stalling out. So that's why i chose to replace the oil pressure switch. But with the new switch installed the truck will run but when i turn the key off, the fuel pump continues to run until i disconnect the battery. As for the transmission issue, it starts off in 1st then 2nd but hangs up when going into 3rd gear. And it only seems to do that at around 2000 rpm reading on the instrmt panel but if i let off the gas pedal it then goes into normal shifting. Driving home from work the other day check engine light came on and seemed to act like it was in a safe mode or something. Loss of power and stuck in one gear. Pulled over and disconnected the battery for a few minutes then reconnected and made it home. Just looking for some possible answers and help.thanks again.
Chevy Mechanic: Reggie Whiddon,
 replied 6 months ago

Okay one thing you want to look out for is the ignition switch ck to make sure you dont have any burned contacts on switch or connector and verify correct voltage at fuse box ck each row of fuses you want to see battery voltage when there is a problem one or more rows of fuses would record a much lower voltage reading this lower voltage wreaks havoc on the operation of components such as your transmission it sounds like you either installed the incorrect switch or a faulty one. Double check the correct part number be sure and tell them you have a gauge and not a light.

Ask Your Own Chevy Question
Chevy Mechanic: Reggie Whiddon,
 replied 6 months ago

Replace that switch and the fuel pump relay ck those voltages with vehicle running and wiggle the harness at steering column and fuse block while checking voltage and let me know what you find

Ask Your Own Chevy Question
Chevy Mechanic: Reggie Whiddon,
 replied 6 months ago

Hello are you still working on this can i help you any further

Ask Your Own Chevy Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a chevy mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Reggie Whiddon Your Own Question
Reggie Whiddon
Reggie Whiddon
Reggie Whiddon
Category: Chevy
Satisfied Customers: 168
168 Satisfied Customers
Experience: Lead tech at river regions auto

Reggie Whiddon is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.

Todd LRochester NY

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

Chevy Technician

15,659 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

Chevy Technician

9,621 satisfied customers

15 years GM master tech

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

8,884 satisfied customers

Have owned a repair shop for 25 yrs.

Dave Nova

Dave Nova

Chevrolet Technician

7,092 satisfied customers

ASE Master Certification. GM World Class Certification

John

John

Master A.S.E Automotive technician

4,071 satisfied customers

A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician

Don - Mo Lurch

Don - Mo Lurch

Auto Mech / Electronics

2,948 satisfied customers

Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

Ron Z.

Ron Z.

- Chevy Tech -

2,822 satisfied customers

18+yrs experience. State Inspector and Chevy Diagnostics

< Previous | Next >

Related Chevy Questions
I have a 6.5 liter turbo diesel/ chevy silverado 1500 2wd.
i have a 6.5 liter turbo diesel/ chevy silverado 1500 2wd. at first it was geting little to no power and burning fuel very rich. so i got a diagnostic done and was told it needed a new turbo. i replac… read more
Jerry Newton
Jerry Newton
Vocational, Technical or Trade Scho
2,066 satisfied customers
It was stalling out at traffic lights. I replaced fuel tank
it was stalling out at traffic lights. I replaced fuel tank and pump new year ago, changed all spark plug wires and plugs, distributer, map sensor, tps, coil, rotor, maf, new computer and now it wont … read more
Mike S.
Mike S.
Vocational, Technical or Trade Scho
7,847 satisfied customers
I have a 06 chevy silverado 4.8and after new plugs wires and
I have a 06 chevy silverado 4.8*****and after new plugs wires and a maf sensor my tuck seems like it's struggling to maintain and get up to speed and when im at my desired speed, no soon as i get off … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
1994 chevy Silverado with a 6.5 liter turbo engine. if you
1994 chevy Silverado with a 6.5 liter turbo engine. if you leave truck alone for a while the fuel blees down from filter housing, turn key on and after a little while it begins to come out of top blee… read more
Jerry Newton
Jerry Newton
Vocational, Technical or Trade Scho
2,066 satisfied customers
I have a 1994 Chevrolet S-10 ZR2 with a 4.3 liter V-6. This
I have a 1994 Chevrolet S-10 ZR2 with a 4.3 liter V-6. This truck starts and runs fine, but after about 20 minutes a highway speeds when you slow down at a traffic light or to make a turn the engine d… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Chevrolet Silverado 2500 HD: 2003 Chevy Silverado 2500HD I
2003 Chevy Silverado 2500HD I was pulling my fifth wheel camping yesterday and on the way to the camp site, the truck died in the middle of the road. It was a slow die: It seemed like the trailer brak… read more
BigBob
BigBob
Service Manager
High School or GED
4,792 satisfied customers
chevy: diesel..check engine light comes on and the truck slows..rpm
i have a 3500hd chevy silverado diesel and when we tow the check engine light comes on and the truck slows way down. It sometimes does it when we do not tow. We can regulate it by driving it different… read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,659 satisfied customers
86 Silverado, the brakes went..is to adjust the throttle..fuel pump
I have an 86 Silverado, the brakes went out and it started smoking. Now the only way I can get it to idle is to adjust the throttle on the carb. Could it be a vacuum line, fuel pump, or the carb.… read more
Tim&#039;s Auto Repair
Tim's Auto Repair
mechanic
High School or GED
8,884 satisfied customers
Electrical..2001 silverado 2WD; 4.3L; AC & Cruise only
electrical problem (suspect so anyway). 2001 silverado 2WD; 4.3L; AC & Cruise only. engine stalls and MIL displays "security" or "check engine oil pressure" or nothing. sometimes both security & C.E.O… read more
JContin
JContin
Master's Degree
125 satisfied customers
1992 Chevy: die..I put it into gear and it runs rough
TyQ\pe your question here.Why does my 1992 Chevy Silverado die when I put it into gear and it runs rough. i start the truck it idles slow , put it into gear it dies sometimes it act like it doesnt hav… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
I have a 2008 Chev...Silverado..6.0L..2500 HD..4WD
I have a 2008 Chev. Silverado (6.0L) 2500 HD 4WD truck. When I attempt to start it the engine will not turn. There is electrical current (lights, radio, heater, etc) but it won't crank. After I lock/u… read more
Kevin Bourcier
Kevin Bourcier
Vocational, Technical or Trade Scho
385 satisfied customers
A 1994 c1500 with a 350 and auto transmission..stall..highway..pedal
mHi, I have purchased a 1994 c1500 with a 350 and auto transmission. It stumbles and sometimes stall after sitting at a light. it will stall after coming off the highway when you release the pedal. I … read more
Scott
Scott
Manager/Technician
Associate Degree
1,314 satisfied customers
97 Cavalier: stalling..the highway..stop light..sputters
I have a 97 Cavalier 2.2 with 188000 KM on it. For the past 2 weeks, I have been getting a strange stalling/loss of power sometimes when I slow down coming off the highway into slow traffic, or someti… read more
Joel
Joel
GM Journeyman technician
Associate Degree
1,603 satisfied customers
I have a 2000 model van/ box truck 1 ton..runs great
i have a 2000 model van/ box truck 1 ton. 5.7lt the van runs great and then it will just go dead like the fule was shut off. i have replaced fule pump and filter but it still continues to do this. any… read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,659 satisfied customers
1995 chevy: 4wd..auto trans..gus starts fine and runs good
I have a 1995 chevy 3/4 ton 4wd pickup with a 5.0Lengine auto trans. Gus starts fine and runs good but when you try to drive it wont run but 1800 rpm. throttle goes to floor, nothing happens. park it,… read more
Mcgruder73
Mcgruder73
Auto Technician
Associate Degree
A 2002 silverado with a 5.3..fuel pump..wont run..truck wont start
I have a 2002 silverado with a 5.3. I replaced the fuel pump and the realy and the fuel pump still won't run and the truck won't start. Why?… read more
GM Master Tech 01
GM Master Tech 01
GM certified diesel master tech
226 satisfied customers
1994 chevy cavalier: stalls..highway speeds..15 minutes..crank sensor
I''ve got a 1994 chevy cavalier. It stalls out at highway speeds after 10 or 15 minutes of driving. I''ve replaced the crank sensor. The lights and radio stays on without a problem before, during, and… read more
RIP
RIP
Lead Technician/ JA Car Category Mentor
High School or GED
452 satisfied customers
1994 Chevy S10: 4 cyl..Stalls..distributor cap..wires and fuel filter
1994 Chevy S10 5 speed, 4 cyl has had problems staying running. Stalls periodically at stops, seems to do so more if A/C running. Had complete tune done distributor cap, plugs, wires and fuel filter. … read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x