bad idling and gas mileage

20

Asked by Jul 16, 2013 at 12:26 PM about the 1998 Chevrolet S-10 2 Dr LS Extended Cab SB

Question type: Maintenance & Repair

I have a 98 chevy s10 and everytime im doin about 45mph or 50mph my truck will start to idle weird it feels like misfiring, my check engine light is not on but I have replace both spark plug and wires, throttle sensor, fuel filter and also did a diagnostic and it showed nothing guys sayed it could be camshaft sensor but my truck runs great only bad is between 45 and 60mph and 150 miles off a full tank of gas

9 Answers

5

Sounds like a major tuneup, too much air getting in when flooring the peddle! My opinion only a back alley mechanic would find it sometimes before a shop!!

okay...could be many things, but we will start with an idle air control...put one of these units in there and report~

3 out of 3 people think this is helpful.

The fuel pressure regulator if hose is cracked will not issue full fuel pressure and will be sucking air leading to high-idle/bad performance...this is a non OBD-II device which would not be picked up by the onboard diagnostics~ bad moojoo man-

4 out of 4 people think this is helpful.

back to basics...make sure the battery is newer than five years old as will start playin' hell with your alternator...the 1/0 cable off the battery as it attaches to the chassis should be wirebrushed clean...what you don't know is that it actually 'welds' this connection with every use and shared the same ground with the dainty electronics of the ECU....yes combine a 300 amp load with a 120mA ground....smart....not~

3 out of 3 people think this is helpful.

The EGR (exhaust gas recirculation) valve is supposed to engage when combustion temperatures get too hot, and upon decelleration...yours could be disassembled and cleaned with bra-kleen~

4 out of 4 people think this is helpful.

No "mark helpful"? all of these solutions could provide excellent performance~ what ya gonna do with a drunken sailor?

3 out of 3 people think this is helpful.

I'm sixty points away from making GURU #3 spot...you're holdin' me up, man~ I give good answers and get not even a howdy do from you....shame and waste of effort...not to complain...could you give a guy a break....I'm here workin' it for you....I'm never coming to this restaurant again!

2 out of 2 people think this is helpful.

roota...voota...zoot.~

1 out of 1 people think this is helpful.

...a rabbit.~

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

S-10

Looking for a Used S-10 in your area?

CarGurus has 1,614 nationwide S-10 listings starting at $1,800.

ZIP:

Search Chevrolet S-10 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Chevrolet S-10 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,130
#2 John Saffrahn
John Saffrahn
Reputation 910
#2 Trebor66
Trebor66
Reputation 910
View All

Related Models For Sale

Used Ford Ranger
213 Great Deals out of 6,816 listings starting at $1,595
Used Chevrolet Silverado 1500
2,579 Great Deals out of 151,095 listings starting at $1,500
Used GMC Sonoma
10 Great Deals out of 535 listings starting at $1,995
Used Toyota Tacoma
713 Great Deals out of 31,628 listings starting at $2,750
Used Ford F-150
3,035 Great Deals out of 207,199 listings starting at $1,990
Used Chevrolet Blazer
1,297 listings starting at $2,000
Used Dodge Dakota
133 Great Deals out of 4,328 listings starting at $995
Used GMC Sierra 1500
1,018 Great Deals out of 59,972 listings starting at $1,299
Used Nissan Frontier
475 Great Deals out of 22,908 listings starting at $1,999
Used Dodge Ram 1500
530 Great Deals out of 13,026 listings starting at $1,800
Used Chevrolet Camaro
438 Great Deals out of 40,498 listings starting at $3,500
Used Chevrolet C/K 1500
1,071 listings starting at $1,250
Used Chevrolet Tahoe
857 Great Deals out of 27,925 listings starting at $1,700