Question about 1999 Pontiac Grand Am
If it is up hills only then you have an underpowered engine that can not accelerate in third gear like the junky little Corolla E110 and it's Chevrolet Prizm clone 120 HP on on 2400 pound car do but a 170 HP V6 on a 3000 lb should have more power then that. In any case it is because you are in third gear and first and second gear have enough torque to accelerate properly.
It is the feature I hate the most on smaller engine cars.
Posted on Apr 16, 2015
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Posted on Jan 02, 2017
This year of ranger had a few flaws, In one case, a break power booster was robbing the vacumm, you can test this by plugging it off and seeing the differance, but you will have limited brakes. This model year had a problem with a vacuum leak on the manifold. You can check these in many ways, but please don't use starting fluid. The rear of the manifold usually on the drivers side where it seals to the block.
Also, in 2 other cases a cracked head has gave me the same problem. It is caused from a loss of vacuum.
Posted on Jan 15, 2009
SOURCE: hesitation at 40mph and 50 mph.
A pop and hesitation is likely a backfire. The hesitation around 40 and 50 would be in keeping with that theory. There are several reasons you might be getting backfires and hesitation. If your ECM is adjusting the engine to run too rich this could happen. Misfiring might be occuring. Timing could be out. But one of the most likely is a restricted exhaust, likely due to a plugged, damaged or worn out catalytic converter. In some cases the converter may be bad enough to be giving you some performance problems, but not yet quite bad enough to signal an error. A vacuum test can help confirm whether this is exhaust related.
Posted on Feb 07, 2009
There are a few things that this could be, and I see that you have replaced a few of the items that it could be but steering systems are a weird thing so here ya go:
Post more info you would like, to pass on.
Posted on Mar 17, 2009
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