Wouldn't go faster then 85 mph!!

[Ameer Antar]

this could be so many things...bad compression, fuel issue, ignition 
problem, cam/ignition timing...

First I'd check the compression, low compression will make an engine limp. 
Check ignition for spark and condition of plugs. The plugs can tell you of 
rich or lean mixture. Injectors need to be replaced every 60-80k miles for 
proper running. Make sure this has been done. You will likely have hot 
start problems if you have leaky injectors. Could just be a fuel filter. My 
mom's Taurus just died on her b/c of a clogged filter, the filter was about 
3000 miles old! Could be a vacc. leak too. Check your warm-reg. too. These 
often go bad, and make it real hard to start cold and can cause other 
probs. Check it by testing for 12v at it's harness and 17-21 ohms for the 
reg. itself. But the real test is using a fuel psi gauge and watching it 
rise as the temp goes up. It could be any of these problems and combination 
of many. If you think it's fuel problems, an Air-fuel gauge connected to 
the O2 sensor will really help you eliminate problems. This gauge tells you 
everything you want to know about the mixture, b/c you can find out what's 
happening at all different operating conditions. Hooking it up is real easy 
and just mount it anywhere. You can get one for $25 or so from JCW or a 
nice one from autogauge for under $50. The problems on these cars are 
usually simple to fix, but are hard to diagnose w/o a few simple tools and 
some sort of manual. good luck. let us know what you find out.

-ameer
'84 5kT...190k


At 03:20 PM 9/21/00, you wrote:
>I have a 87 4000s and It refuse to past 82-85 mph, depending on the road
>level. It hesitate sometimes making an putt - putt sound. And now that the
>weather is changing it a miracle if it will just start up in the morning. I
>suspect the fuel injection, but I need to figure it out soon before it get
>really cold.
>
>
>Chris Jones
>91 Talon TSI AWD
>87 4000s
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