engine hesitation

yamaha
0

Asked by yamaha May 24, 2009 at 02:45 PM about the 1997 Chevrolet Monte Carlo 2 Dr LS Coupe

Question type: Maintenance & Repair

My car has a bad hesitation that seems to go away under full throttle. The hesistation is most prominant under light loads around 50km/hr and 110km/hr. Several mechanics have inspected the car but cannot find anything wrong. There are no codes, it only happens about 80% of the time, the problem isn't getting worse and has been present for about 3 years. Do you have any suggestions?

2 Answers

Mike Bonnell
7,295

Fuel Pressure is very important on these vehicles - Make sure that Fuel pressure and fuel pressure regulator are working properly ( 41-47 lbs / 284-325 kpa ) If that is good I think next you would go to the TPS sensor and do a voltage sweep test on it - Ohm testing is not a sufficient test. Lastly I would go to the MAP sensor ro make sure it is getting proper vaccuum from the manifold as it is directly fitted to it it may get carboned up and check for proper voltage curve uner acceleration, Good Luck

1 out of 1 people think this is helpful.
Joseph Rota
295

if you have an automatic trans get ur tranny checked; ur converter may not be getting all the oil it needs at certain speeds in certain gears at certain loads. or 2 of the gear sets could be very worn, i had that problem with my dad's Pontiac Montana at around 80km/h. then get ur sensors checked such as load sensor, vacum and engine speed sensor. even if ur tach is working good the electronics between the engine and trans may not b communicating right. worst case senario ur motor just doesn't have any low end balls any more and 80% of the time for 3 years dude...... just No! get it checked when a problem first shows up.

Your Answer

Add photo

Related Questions

Search Chevrolet Monte Carlo Questions

Chevrolet Monte Carlo Experts

#1 dandyoun
dandyoun
Reputation 270
#2 Tom Demyan
Tom Demyan
Reputation 260
#3 TransAm77
TransAm77
Reputation 180
View All

Related Models For Sale

Used Chevrolet Impala"
1,769 Great Deals out of 62,585 listings starting at $1,295
Used Chevrolet Camaro"
573 Great Deals out of 33,253 listings starting at $2,595
Used Ford Mustang"
918 Great Deals out of 29,909 listings starting at $1,995
Used Pontiac Grand Prix"
153 Great Deals out of 5,133 listings starting at $600
Used Chevrolet Tahoe"
965 Great Deals out of 28,480 listings starting at $2,700
Used Chevrolet Malibu"
1,301 Great Deals out of 81,277 listings starting at $1,595
Used Chevrolet Corvette"
326 Great Deals out of 11,233 listings starting at $3,997

Used Cars For Sale

2007 Chevrolet Monte Carlo For Sale
10 Great Deals out of 228 listings starting at $3,450
2006 Chevrolet Monte Carlo For Sale
16 Great Deals out of 382 listings starting at $2,900
2005 Chevrolet Monte Carlo For Sale
7 Great Deals out of 245 listings starting at $1,999
2004 Chevrolet Monte Carlo For Sale
28 Great Deals out of 387 listings starting at $1,595
2003 Chevrolet Monte Carlo For Sale
13 Great Deals out of 316 listings starting at $1,900