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~

3 out of 3 people think this is helpful.

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

2 out of 2 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 1,636 nationwide S-10 listings starting at $2,450.

ZIP:

Search Chevrolet S-10 Questions

Chevrolet S-10 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,050
#2 John Saffrahn
John Saffrahn
Reputation 890
#3 Trebor66
Trebor66
Reputation 880
View All

Related Models For Sale

Used Ford Ranger
227 Great Deals out of 6,966 listings starting at $1,500
Used Chevrolet Silverado 1500
2,629 Great Deals out of 148,535 listings starting at $1,800
Used GMC Sonoma
11 Great Deals out of 489 listings starting at $1,500
Used Ford F-150
3,389 Great Deals out of 203,566 listings starting at $1,273
Used Toyota Tacoma
773 Great Deals out of 33,032 listings starting at $1,900
Used Dodge Dakota
117 Great Deals out of 4,351 listings starting at $995
Used Chevrolet Blazer
1,364 listings starting at $1,295
Used GMC Sierra 1500
1,156 Great Deals out of 57,801 listings starting at $995
Used Nissan Frontier
425 Great Deals out of 21,861 listings starting at $1,995
Used Dodge Ram 1500
568 Great Deals out of 12,973 listings starting at $1,200
Used Chevrolet C/K 1500
1,055 listings starting at $1,999
Used Chevrolet Camaro
646 Great Deals out of 39,146 listings starting at $2,995
Used Chevrolet Tahoe
1,068 Great Deals out of 32,280 listings starting at $1,495